Materials · Cross-reference
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Search 146 fastener grades by ASTM specification, UNS number or common name. Each result links to the full data sheet: chemistry, mechanical properties, heat treatment and the fasteners we make in it.
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146 of 146 grades
| Grade | Specification | UNS | Common / AISI name | Strength | Pairs with |
|---|---|---|---|---|---|
| ASTM A193 Grade B7Chromium-molybdenum alloy steel, quenched and tempered | ASTM A193 / ASME SA-193 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 125 ksi min≤2½ in. | A194 2Hcompanion nut |
| ASTM A193 Grade B7MChromium-molybdenum alloy steel, quenched and tempered to controlled hardness | ASTM A193 / ASME SA-193 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 100 ksi min≤4 in. | A194 2HMcompanion nut |
| ASTM A193 Grade B16Chromium-molybdenum-vanadium alloy steel, quenched and tempered | ASTM A193 / ASME SA-193 | K14072 | Cr-Mo-V alloy steel | 125 ksi min≤2½ in. | A194 7companion nut |
| ASTM A193 Grade B55 percent chromium-molybdenum steel, quenched and tempered | ASTM A193 / ASME SA-193 | S50100 | AISI 501 (5 Cr – ½ Mo) | 100 ksi min≤4 in. | A194 3companion nut |
| ASTM A193 Grade B6 (410 Stainless)12–13 percent chromium martensitic stainless steel, hardened and tempered | ASTM A193 / ASME SA-193 | S41000 | AISI 410 (martensitic stainless) | 110 ksi min≤4 in. | A194 6companion nut |
| ASTM A193 Grade B8 Class 1 (304 Stainless)Austenitic 18-8 stainless steel; Class 1 solution treated, Class 2 strain hardened | ASTM A193 / ASME SA-193 | S30400 | AISI 304 (Class 1 and Class 2) | 75 ksi min | A194 8companion nut |
| ASTM A193 Grade B8 Class 2 (304 Strain Hardened)Austenitic 18-8 stainless steel, cold worked for strength | ASTM A193 / ASME SA-193 | S30400 | AISI 304, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8companion nut |
| ASTM A193 Grade B8M Class 1 (316 Stainless)Austenitic molybdenum-bearing stainless steel; Class 1 solution treated, Class 2 strain hardened | ASTM A193 / ASME SA-193 | S31600 | AISI 316 (Class 1 and Class 2) | 75 ksi min | A194 8Mcompanion nut |
| ASTM A193 Grade B8M Class 2 (316 Strain Hardened)Austenitic molybdenum-bearing stainless steel, cold worked for strength | ASTM A193 / ASME SA-193 | S31600 | AISI 316, solution treated and strain hardened | 110 ksi min≤¾ in. | A194 8Mcompanion nut |
| ASTM A193 Grade B8C Class 1 (347 Stainless)Austenitic niobium-stabilised stainless steel; Class 1 solution treated, Class 2 strain hardened | ASTM A193 / ASME SA-193 | S34700 | AISI 347 (niobium stabilised) | 75 ksi min | A194 8Ccompanion nut |
| ASTM A193 Grade B8C Class 2 (347 Strain Hardened)Austenitic niobium-stabilised stainless steel, cold worked for strength | ASTM A193 / ASME SA-193 | S34700 | AISI 347, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8Ccompanion nut |
| ASTM A193 Grade B8T Class 1 (321 Stainless)Austenitic titanium-stabilised stainless steel; Class 1 solution treated, Class 2 strain hardened | ASTM A193 / ASME SA-193 | S32100 | AISI 321 (titanium stabilised) | 75 ksi min | A194 8Tcompanion nut |
| ASTM A193 Grade B8T Class 2 (321 Strain Hardened)Austenitic titanium-stabilised stainless steel, cold worked for strength | ASTM A193 / ASME SA-193 | S32100 | AISI 321, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8Tcompanion nut |
| ASTM A193 Grade B8R (Nitronic 50 / XM-19)Nitrogen-strengthened austenitic stainless steel, carbide solution treated | ASTM A193 / ASME SA-193 | S20910 | XM-19 (Nitronic® 50) | 100 ksi minClass 1C / 1D | A194 8Rcompanion nut |
| ASTM A193 Grade B8S (Nitronic 60)Silicon-manganese austenitic stainless steel with built-in galling resistance, carbide solution treated | ASTM A193 / ASME SA-193 | S21800 | Alloy 218 (Nitronic® 60) | 95 ksi minClass 1C / 1D | A194 8Scompanion nut |
| ASTM A193 Grade B8P Class 1 (305 Stainless)High-nickel 18-8 austenitic stainless with low work-hardening, Class 1 solution treated or Class 2 strain hardened | ASTM A193 / ASME SA-193 | S30500 | AISI 305 | 75 ksi min | A194 8companion nut |
| ASTM A193 Grade B8P Class 2 (305 Strain Hardened)High-nickel 18-8 austenitic stainless with low work-hardening, Class 1 solution treated or Class 2 strain hardened, cold worked for strength | ASTM A193 / ASME SA-193 | S30500 | AISI 305, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8companion nut |
| ASTM A193 Grade B8N Class 1B (304N Stainless)Nitrogen-strengthened 18-8 austenitic stainless, Class 1B solution treated or Class 2 strain hardened | ASTM A193 / ASME SA-193 | S30451 | AISI 304N | 80 ksi min | A194 8companion nut |
| ASTM A193 Grade B8N Class 2 (304N Strain Hardened)Nitrogen-strengthened 18-8 austenitic stainless, Class 1B solution treated or Class 2 strain hardened, cold worked for strength | ASTM A193 / ASME SA-193 | S30451 | AISI 304N, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8companion nut |
| ASTM A193 Grade B8MN Class 1B (316N Stainless)Nitrogen-strengthened molybdenum-bearing austenitic stainless, Class 1B solution treated or Class 2 strain hardened | ASTM A193 / ASME SA-193 | S31651 | AISI 316N | 80 ksi min | A194 8Mcompanion nut |
| ASTM A193 Grade B8MN Class 2 (316N Strain Hardened)Nitrogen-strengthened molybdenum-bearing austenitic stainless, Class 1B solution treated or Class 2 strain hardened, cold worked for strength | ASTM A193 / ASME SA-193 | S31651 | AISI 316N, solution treated and strain hardened | 110 ksi min≤¾ in. | A194 8Mcompanion nut |
| ASTM A193 Grades B8LN and B8MLN (304LN / 316LN)Low-carbon nitrogen-bearing austenitic stainless for welded and cryogenic service, Class 1 solution treated | ASTM A193 / ASME SA-193 | S30453 · S31653 | AISI 304LN · 316LN | 75 ksi minClass 1 | — |
| ASTM A193 Grade B8MLCuN Class 1B (254 SMO, UNS S31254)6 percent molybdenum super austenitic stainless steel, Class 1B solution treated or Class 2 strain hardened | ASTM A193 / ASME SA-193 | S31254 | 254 SMO® (6 % Mo super austenitic) | 80 ksi min | A194 8Mcompanion nut |
| ASTM A193 Grade B8MLCuN Class 2 (254 SMO Strain Hardened)6 percent molybdenum super austenitic stainless steel, Class 1B solution treated or Class 2 strain hardened, cold worked for strength | ASTM A193 / ASME SA-193 | S31254 | 254 SMO®, solution treated and strain hardened | 110 ksi min≤¾ in. | A194 8Mcompanion nut |
| ASTM A320 Grade L7Chromium-molybdenum alloy steel, quenched and tempered, Charpy impact tested at −150 °F | ASTM A320 / ASME SA-320 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 125 ksi min≤2½ in. | A194 7companion nut |
| ASTM A320 Grade L7MChromium-molybdenum alloy steel, quenched and tempered to controlled hardness, impact tested at −100 °F | ASTM A320 / ASME SA-320 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 100 ksi min≤2½ in. | A194 7Mcompanion nut |
| ASTM A320 Grade L43Nickel-chromium-molybdenum alloy steel, quenched and tempered, Charpy impact tested at −150 °F | ASTM A320 / ASME SA-320 | G43400 | AISI 4340 | 125 ksi min≤4 in. | A194 7companion nut |
| ASTM A320 Grades L7A, L7B and L7CAlternative alloy steels to L7, quenched and tempered, Charpy impact tested at −150 °F | ASTM A320 / ASME SA-320 | G40370 · G41370 · G87400 | AISI 4037 · 4137 · 8740 | 125 ksi min≤2½ in. | A194 7companion nut |
| ASTM A320 Grades L70, L71, L72 and L73The L7-family steels impact tested at −100 °F instead of −150 °F | ASTM A320 / ASME SA-320 | G41400 · G40370 · G41370 · G87400 | AISI 4140 · 4037 · 4137 · 8740 | 125 ksi min≤2½ in. | A194 7companion nut |
| ASTM A320 Grade L1Low-carbon boron steel, quenched and tempered, Charpy impact tested at −100 °F with a 40 ft·lbf requirement | ASTM A320 / ASME SA-320 | — | Low-carbon boron steel | 125 ksi min≤1 in. | A194 7companion nut |
| ASTM A320 Grade B8 Class 1 (304 Stainless)Austenitic 18-8 stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S30400 | AISI 304, carbide solution treated | 75 ksi min | A194 8companion nut |
| ASTM A320 Grade B8 Class 2 (304 Strain Hardened)Austenitic 18-8 stainless steel, cold worked, for low-temperature service | ASTM A320 / ASME SA-320 | S30400 | AISI 304, solution treated and strain hardened | 125 ksi min≤¾ in. | A194 8companion nut |
| ASTM A320 Grade B8M Class 1 (316 Stainless)Austenitic molybdenum-bearing stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S31600 | AISI 316, carbide solution treated | 75 ksi min | A194 8Mcompanion nut |
| ASTM A320 Grade B8M Class 2 (316 Strain Hardened)Austenitic molybdenum-bearing stainless steel, cold worked, for low-temperature service | ASTM A320 / ASME SA-320 | S31600 | AISI 316, solution treated and strain hardened | 110 ksi min≤¾ in. | A194 8Mcompanion nut |
| ASTM A320 Grade B8C (347 Stainless)Niobium-stabilized austenitic stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S34700 | AISI 347, niobium stabilized | 75 ksi minClass 1 | A194 8Ccompanion nut |
| ASTM A320 Grade B8T (321 Stainless)Titanium-stabilized austenitic stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S32100 | AISI 321, titanium stabilized | 75 ksi minClass 1 | A194 8Tcompanion nut |
| ASTM A320 Grade B8P (305 Stainless)High-nickel austenitic stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S30500 | AISI 305, high-nickel 18-8 | 75 ksi minClass 1 | A194 8companion nut |
| ASTM A320 Grade B8F (303 Free-Machining Stainless)Free-machining austenitic stainless steel for low-temperature service | ASTM A320 / ASME SA-320 | S30300 / S30323 | AISI 303 (sulfur) or 303Se (selenium), free machining | 75 ksi minClass 1 | A194 8companion nut |
| ASTM A320 Grades B8LN and B8MLN (304LN / 316LN Stainless)Low-carbon, nitrogen-bearing austenitic stainless steels for low-temperature service | ASTM A320 / ASME SA-320 | S30453 / S31653 | AISI 304LN (B8LN) and 316LN (B8MLN), nitrogen strengthened | 75 ksi min | A194 8companion nuts |
| ASTM A194 Grade 2HMedium-carbon steel heavy hex nut, quenched and tempered | ASTM A194 / ASME SA-194 | — | Medium-carbon steel (0.40% C min) | 175 ksi heavy hex · 150 ksi hexproof load | A193 B7companion stud |
| ASTM A194 Grade 2HMMedium-carbon steel heavy hex nut, quenched and tempered to controlled hardness | ASTM A194 / ASME SA-194 | — | Medium-carbon steel (0.40% C min) | 150 ksi heavy hex · 135 ksi hexproof load | A193 B7Mcompanion stud |
| ASTM A194 Grade 4Carbon-molybdenum alloy steel nut, quenched and tempered | ASTM A194 / ASME SA-194 | — | Carbon-molybdenum alloy steel | — | A193 B16companion stud |
| ASTM A194 Grade 7Chromium-molybdenum alloy steel nut, quenched and tempered | ASTM A194 / ASME SA-194 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 175 ksi heavy hex · 150 ksi hexproof load | A193 B16companion stud (hot) |
| ASTM A194 Grade 7MChromium-molybdenum alloy steel nut, quenched and tempered to controlled hardness | ASTM A194 / ASME SA-194 | G41400 · G41420 · G41450 | AISI 4140 · 4142 · 4145 | 150 ksi heavy hex · 135 ksi hexproof load | A193 B7Mcompanion stud |
| ASTM A194 Grade 8 (304 Stainless)Austenitic 18-8 stainless steel nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S30400 | AISI 304 | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8 Class 1companion stud |
| ASTM A194 Grade 8M (316 Stainless)Austenitic molybdenum-bearing stainless steel nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S31600 | AISI 316 | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8M Class 1companion stud |
| ASTM A194 Grade 35 percent chromium-molybdenum steel nut, quenched and tempered | ASTM A194 / ASME SA-194 | S50100 | AISI 501 (5 Cr – ½ Mo) | 175 ksi heavy hex · 150 ksi hexproof load | A193 B5companion stud |
| ASTM A194 Grade 6 (410 Stainless)Martensitic 12 percent chromium stainless nut, hardened and tempered | ASTM A194 / ASME SA-194 | S41000 | AISI 410 (6F: AISI 416) | 150 ksi heavy hex · 135 ksi hexproof load | A193 B6companion stud |
| ASTM A194 Grade 8C (347 Stainless)Niobium-stabilised austenitic stainless nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S34700 | AISI 347 | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8C Class 1companion stud |
| ASTM A194 Grade 8T (321 Stainless)Titanium-stabilised austenitic stainless nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S32100 | AISI 321 | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8T Class 1companion stud |
| ASTM A194 Grade 8R (Nitronic 50 / XM-19)Nitrogen-strengthened austenitic stainless nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S20910 | XM-19 (Nitronic® 50) | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8Rcompanion stud |
| ASTM A194 Grade 8S (Nitronic 60)Galling-resistant silicon-manganese austenitic stainless nut, forged or machined from bar (A type solution treated after finishing) | ASTM A194 / ASME SA-194 | S21800 | Alloy 218 (Nitronic® 60) | 80 ksi heavy hex · 75 ksi hexproof load | A193 B8Scompanion stud |
| ASTM A194 Grade 16Chromium-molybdenum-vanadium alloy steel nut, quenched and tempered | ASTM A194 / ASME SA-194 | K14072 | Cr-Mo-V alloy steel | 175 ksi heavy hex · 150 ksi hexproof load | A193 B16companion stud |
| ASTM A194 Grade 43Nickel-chromium-molybdenum alloy steel nut, quenched and tempered | ASTM A194 / ASME SA-194 | G43400 | AISI 4340 | 175 ksi heavy hex · 150 ksi hexproof load | A320 L43companion stud |
| ASTM A453 Grade 660 (A-286)Precipitation-hardening iron-nickel-chromium superalloy bolting, solution treated and aged (Classes A, B, C, D) | ASTM A453 / ASME SA-453 | S66286 | A-286 (Incoloy® alloy A-286) | 130 ksi min (Class D over 2½ in.: 120)Classes A–D (≤2½ in.) | — |
| 17-4 PH Stainless (Type 630, UNS S17400)Martensitic precipitation-hardening stainless steel, solution treated and age hardened | ASTM A1082 bolting · ASTM A564 bar | S17400 | Type 630 (17-4 PH®) | 190 ksi minH900 | — |
| Duplex 2205 Stainless (UNS S31803 / S32205)Ferritic-austenitic duplex stainless steel, solution annealed and water quenched | ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F51 / F60 | S31803 · S32205 | 2205 duplex (22 Cr – 5 Ni – 3 Mo – N) | 90 ksi min (S31803) · 95 ksi (S32205) | — |
| Super Duplex 2507 Stainless (UNS S32750)Ferritic-austenitic super duplex stainless steel, solution annealed and water quenched | ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F53 | S32750 | 2507 super duplex (25 Cr – 7 Ni – 4 Mo – N) | 116 ksi min≤2 in. | — |
| Super Duplex Zeron 100 (UNS S32760, F55)Ferritic-austenitic super duplex stainless steel with copper and tungsten, solution annealed and water quenched | ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F55 | S32760 | Zeron® 100 super duplex (25 Cr – 7 Ni – 3.5 Mo – Cu – W – N) | 109 ksi min | — |
| 15-5 PH Stainless (XM-12, UNS S15500)Martensitic precipitation-hardening stainless steel, the ferrite-free version of 17-4 | ASTM A564 bar · AMS 5659 | S15500 | XM-12 (15-5 PH®) | 190 ksi minH900 | — |
| 17-7 PH Stainless (Type 631, UNS S17700)Semi-austenitic precipitation-hardening stainless steel, transformed and aged | ASTM A1082 bolting · ASTM A564 bar | S17700 | Type 631 (17-7 PH®) | 185 ksi minRH950 | — |
| SAE Grade 5 / ASTM A449 Bolts (120 ksi)Quenched-and-tempered medium-carbon steel bolting, 120 ksi | ASTM A449 Type 1 · SAE J429 Grade 5 | — | Medium-carbon or alloy steel, quenched and tempered | 120 ksi min¼–1 in. | — |
| SAE Grade 8 / ASTM A354 Grade BD Bolts (150 ksi)Quenched-and-tempered alloy steel bolting, 150 ksi | ASTM A354 Grade BD · SAE J429 Grade 8 | — | Alloy steel, quenched and tempered | 150 ksi min (173 max)all sizes | — |
| ASTM A354 Grade BC Bolts (125 ksi)Quenched-and-tempered alloy steel bolting, 125 ksi | ASTM A354 Grade BC | — | Alloy steel, quenched and tempered | 125 ksi min¼–2½ in. | — |
| ASTM A307 Grade A and B Bolts (60 ksi)Low-carbon steel bolting, 60 ksi | ASTM A307 · SAE J429 Grade 2 equivalent | — | Low-carbon steel | 60 ksi minGrade A | — |
| ASTM F3125 Grade A325 Structural Bolts (120 ksi)Heavy hex structural bolting, 120 ksi | ASTM F3125/F3125M Grade A325 · Type 1 and Type 3 | — | Carbon, carbon-boron or alloy steel, quenched and tempered | 120 ksi min | A563 nutsmatching nut grade |
| ASTM F3125 Grade A490 Structural Bolts (150 ksi)Heavy hex structural bolting, 150 ksi | ASTM F3125/F3125M Grade A490 · Type 1 and Type 3 | — | Alloy steel, quenched and tempered | 150–173 ksi | A563 nutsmatching nut grade |
| ASTM A540 Grades B21, B22, B23, B24 Bolting (Pressure Vessel and Nuclear)Alloy steel bolting with special impact and hardness classes, 120 to 165 ksi | ASTM A540 / ASME SA-540 | — | Cr-Mo-V (B21), 4142H (B22), E4340H (B23), 4340 Mod (B24) | 120 ksi minClass 5 | — |
| ASTM F1554 Grades 36, 55 and 105 Anchor BoltsAnchor bolts, straight, bent and headed, 36 to 105 ksi yield | ASTM F1554 | — | Carbon, HSLA and alloy steel | — | — |
| ASTM A574 Alloy Steel Socket Head Cap Screws (170–180 ksi)Alloy steel socket head cap screws, 170 to 180 ksi | ASTM A574 · ASME B18.3 | — | Alloy steel, quenched and tempered | 180 ksi min≤½ in. | — |
| Property Classes 4.6 and 5.8 Metric Bolts (ISO 898-1 / ASTM F568M)Metric low-carbon bolting, 400 and 520 MPa | ISO 898-1 · ASTM F568M | — | Low or medium carbon steel | — | — |
| Property Class 8.8 Metric Bolts (ISO 898-1 / ASTM F568M)Metric quenched-and-tempered bolting, 830 MPa | ISO 898-1 · ASTM F568M Class 8.8 | — | Medium-carbon or low-carbon martensite steel, quenched and tempered | 830 MPa (120 ksi) min | — |
| Property Class 10.9 Metric Bolts (ISO 898-1 / ASTM F568M)Metric quenched-and-tempered alloy bolting, 1040 MPa | ISO 898-1 · ASTM F568M Class 10.9 | — | Medium-carbon alloy steel, quenched and tempered | 1040 MPa (150 ksi) min | — |
| Property Class 12.9 Metric Bolts (ISO 898-1 / ASTM F568M)Metric quenched-and-tempered alloy bolting, 1220 MPa | ISO 898-1 · ASTM F568M Class 12.9 | — | Alloy steel, quenched and tempered | 1220 MPa (177 ksi) min | — |
| A2-50, A2-70 and A2-80 Stainless Metric Fasteners (ISO 3506 / ASTM F738M)Austenitic stainless metric bolting, 18-8 group | ISO 3506-1 · ASTM F738M | S30400 group | 304, 304L, 305 and related 18-8 grades | — | — |
| A4-50, A4-70 and A4-80 Stainless Metric Fasteners (ISO 3506 / ASTM F738M)Austenitic stainless metric bolting, molybdenum group | ISO 3506-1 · ASTM F738M | S31600 group | 316 and 316L | — | — |
| ASTM F835 Alloy Steel Socket Button and Flat Head Cap ScrewsAlloy steel socket button and countersunk head cap screws, 136 to 144 ksi | ASTM F835 · ASME B18.3 | — | Alloy steel, quenched and tempered | 144 ksi min≤½ in. | — |
| ASTM F912 Alloy Steel Socket Set ScrewsAlloy steel socket set screws, 45 to 53 HRC | ASTM F912 · ASME B18.3 | — | Alloy steel, quenched and tempered | — | — |
| ASTM F880 Stainless Steel Socket Set ScrewsAustenitic stainless socket set screws, conditions AF and CW | ASTM F880 · ASME B18.3 | S30400 / S31600 group | 303, 304, 316 and related austenitic grades | — | — |
| ASTM F879 Stainless Steel Socket Button and Flat Head Cap ScrewsAustenitic stainless socket button and countersunk head cap screws | ASTM F879 · ASME B18.3 | S30400 / S31600 group | 304, 304L, 305, 316, 316L and related | 85 ksi maxAF | — |
| ASTM F837 Stainless Steel Socket Head Cap ScrewsStainless socket head cap screws: austenitic Groups 1 and 2 (Conditions AF, CW, CW1) and martensitic Group 5 (Condition HT) | ASTM F837-20 · ASME B18.3 | Group 1 S30400 family · Group 2 S31600 / S31603 · Group 5 S41000 | Group 1: 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 304J3 · Group 2: 316, 316L · Group 5: 410 | 80 ksi minCW (full size) | — |
| ASTM F2281 Heat-Resisting and High-Temperature Bolts, Cap Screws and StudsCommercial stainless and nickel-alloy bolting for elevated temperature | ASTM F2281 | various | Stainless (304, 316, 321, 347, 309, 310, 330, 410, 416, 431, 430) and nickel alloys (600, 601, 660, 718) | — | — |
| ASTM A563 Carbon and Alloy Steel Nuts (Grades A, B, C, D, DH, DH3)Hex and heavy hex nuts for bolts from 60 to 150 ksi | ASTM A563 / A563M | — | Carbon and alloy steel | — | — |
| ASTM F594 Stainless Steel NutsStainless hex and heavy hex nuts matched to F593 bolts | ASTM F594 | S30400 / S31600 groups and others | 303, 304, 316, 321, 347, 410, 416, 431, 430, 630 | — | 304 Stainlessmatching bolt specification |
| ASTM F436 Hardened Steel WashersHardened flat and beveled washers for high-strength bolting, 38 to 45 HRC | ASTM F436 / F436M | — | Carbon steel (Type 1) or weathering steel (Type 3), through hardened | — | A563 nutsmatching nut grade |
| ASTM F468 Nonferrous Bolts, Hex Cap Screws, Socket Head Cap Screws and StudsNonferrous externally threaded fasteners for general use | ASTM F468 · ASME B18.2.1 / B18.3 | C46400, C65100, C63000, N04400, N05500, N06625 and others | Copper, nickel, aluminium and titanium alloys | — | F467 nonferrous nutsmatching nut specification |
| ASTM F467 Nonferrous NutsNonferrous hex, heavy hex, jam and flange nuts for general use | ASTM F467 · ASME B18.2.2 | C46400, C65100, C63000, N04400, N05500, N06625 and others | Copper, nickel, aluminium and titanium alloys | — | F468 nonferrous boltsmatching bolt specification |
| 304 Stainless Steel (UNS S30400)Austenitic 18-8 chromium-nickel stainless steel | ASTM A276 bar · ASTM F593 bolts | S30400 | AISI 304 | 75 ksi minannealed bar | A194 8matching nut grade |
| 304L Stainless Steel (UNS S30403)Low-carbon austenitic 18-8 stainless steel | ASTM A276 bar · ASTM F593 bolts | S30403 | AISI 304L | 70 ksi minannealed bar | — |
| 302 Stainless Steel (UNS S30200)Higher-carbon austenitic 18-8 stainless steel | ASTM A276 bar | S30200 | AISI 302 | 75 ksi minannealed bar | — |
| 303 Free-Machining Stainless Steel (UNS S30300)Free-machining austenitic 18-8 stainless steel | ASTM A582 bar · ASTM F593 bolts | S30300 | AISI 303 | — | — |
| 316 Stainless Steel (UNS S31600)Molybdenum-bearing austenitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S31600 | AISI 316 | 75 ksi minannealed bar | A194 8Mmatching nut grade |
| 316L Stainless Steel (UNS S31603)Low-carbon molybdenum-bearing austenitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S31603 | AISI 316L | 70 ksi minannealed bar | — |
| 321 Stainless Steel (UNS S32100)Titanium-stabilized austenitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S32100 | AISI 321 | 75 ksi minannealed bar | A194 8Tmatching nut grade |
| 347 Stainless Steel (UNS S34700)Niobium-stabilized austenitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S34700 | AISI 347 | 75 ksi minannealed bar | A194 8Cmatching nut grade |
| 410 Stainless Steel (UNS S41000)Hardenable 12 percent chromium martensitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S41000 | AISI 410 | 70 ksi minannealed bar | — |
| 416 Free-Machining Stainless Steel (UNS S41600)Free-machining hardenable martensitic stainless steel | ASTM A582 bar · ASTM F593 bolts | S41600 | AISI 416 | — | — |
| 431 Stainless Steel (UNS S43100)High-strength nickel-bearing martensitic stainless steel | ASTM A276 bar · ASTM F593 bolts | S43100 | AISI 431 | — | — |
| 422 Stainless Steel (UNS S42200, ASTM A565 Grade 616)High-temperature 12 percent chromium martensitic stainless steel with Mo, W and V | ASTM A565 Grade 616 | S42200 | AISI 422 | 140 ksi minCondition HT | — |
| 440C Stainless Steel (UNS S44004)High-carbon martensitic stainless steel, hardenable to 60 HRC | ASTM A276 bar | S44004 | AISI 440C | — | — |
| Nitronic 50® Stainless Steel (UNS S20910, XM-19)Nitrogen-strengthened austenitic stainless steel with Mo, Nb and V | ASTM A276 bar · ASTM A193 B8R bolts | S20910 | AISI XM-19 | 100 ksi minannealed bar | — |
| Nitronic 60® Stainless Steel (UNS S21800)Galling-resistant austenitic stainless steel with Si, Mn and N | ASTM A276 bar · ASTM A193 B8S bolts | S21800 | AISI S21800 | 95 ksi minannealed bar | — |
| Monel 400 (UNS N04400)Solid-solution nickel-copper alloy, hot or cold worked | ASTM F468 / F467 fasteners · ASTM B164 bar | N04400 | Monel® 400 (Ni-Cu alloy 400) | 80 ksi minF468 (≤¾ in.) | — |
| Monel K-500 (UNS N05500)Precipitation-hardenable nickel-copper alloy, solution treated and aged | ASTM F468 / F467 fasteners · ASTM B865 bar | N05500 | Monel® K-500 (Ni-Cu-Al-Ti alloy 500) | 130 ksi min (130–180 full size)F468 | — |
| Inconel 718 (UNS N07718)Precipitation-hardenable nickel-chromium superalloy, solution treated and double aged | ASTM B637 bar · AMS 5662 / 5663 · API 6A CRA | N07718 | Inconel® alloy 718 (Ni-Cr-Nb-Mo) | 185 ksi min | — |
| Inconel 600 (UNS N06600)Solid-solution nickel-chromium-iron alloy, hot or cold worked | ASTM B166 bar | N06600 | Inconel® alloy 600 (Ni-Cr-Fe) | 90 ksi minhot worked (½–3 in.) | — |
| Inconel 625 (UNS N06625)Solid-solution nickel-chromium-molybdenum-niobium alloy, annealed or solution annealed | ASTM B446 bar · ASTM F468 / F467 fasteners | N06625 | Inconel® alloy 625 (Ni-Cr-Mo-Nb) | 120 ksi minB446 Grade 1 (≤4 in.) | — |
| Incoloy 800 / 800H / 800HT (UNS N08800 / N08810 / N08811)Iron-nickel-chromium alloy for elevated-temperature service; 800H and 800HT are the controlled-carbon, coarse-grain creep grades | ASTM B408 bar | N08800 · N08810 · N08811 | Incoloy® alloys 800, 800H, 800HT (Fe-Ni-Cr) | 75 ksi min800 annealed | — |
| Hastelloy C-276 (UNS N10276)Solid-solution nickel-molybdenum-chromium-tungsten alloy, solution annealed | ASTM B574 rod · ASTM F468 / F467 fasteners | N10276 | Hastelloy® C-276 (Ni-Mo-Cr-W) | 100 ksi minB574 annealed | — |
| Hastelloy C-22 (UNS N06022)Solid-solution nickel-chromium-molybdenum-tungsten alloy, solution annealed | ASTM B574 rod | N06022 | Hastelloy® C-22 (Ni-Cr-Mo-W) | 100 ksi minB574 annealed | — |
| Hastelloy B-2 (UNS N10665)Solid-solution nickel-molybdenum alloy for reducing acids, solution annealed | ASTM B335 rod · F468 / F467 list the related N10001 alloy | N10665 | Hastelloy® B-2 (Ni-Mo) | 110 ksi minB335 annealed | — |
| Hastelloy X (UNS N06002)Solid-solution nickel-chromium-iron-molybdenum alloy for high-temperature strength and oxidation resistance | ASTM B572 rod | N06002 | Hastelloy® X (Ni-Cr-Fe-Mo) | 95 ksi minB572 annealed | — |
| Alloy 20 (Carpenter 20Cb-3, UNS N08020)Niobium-stabilised nickel-iron-chromium alloy with copper and molybdenum, annealed | ASTM B473 bar | N08020 | Alloy 20 / 20Cb-3® (Ni-Fe-Cr-Mo-Cu) | 80 ksi minB473 annealed | — |
| AL-6XN (UNS N08367)6 percent molybdenum, nitrogen-bearing super austenitic alloy, annealed | ASTM B691 bar | N08367 | AL-6XN® (6 % Mo super austenitic) | 95 ksi minB691 annealed | — |
| Inconel® X-750 (UNS N07750)Precipitation-hardening nickel-chromium alloy with Ti, Al and Nb | ASTM B637 | N07750 | Alloy X-750 | 170 ksi minType 2 (<2½ in.) | — |
| Nimonic® 80A (UNS N07080)Precipitation-hardening nickel-chromium alloy with Ti and Al | ASTM B637 | N07080 | Alloy 80A | 135 ksi minfully heat treated | — |
| Inconel® 725 (UNS N07725)Age-hardenable nickel-chromium-molybdenum alloy, sour-service | ASTM B637 | N07725 | Alloy 725 | 150 ksi min | — |
| Incoloy® 925 (UNS N09925)Age-hardenable nickel-iron-chromium alloy with Mo and Cu, sour-service | ASTM B637 | N09925 | Alloy 925 | 140 ksi min | — |
| Incoloy® 825 (UNS N08825)Nickel-iron-chromium alloy with Mo, Cu and Ti, solution annealed | ASTM B425 (bar) · ASTM B564 (forgings) | N08825 | Alloy 825 | 85 ksiannealed (B425 min) | — |
| Incoloy® 800H / 800HT (UNS N08810 / N08811)Controlled-carbon nickel-iron-chromium alloy for creep service | ASTM B408 | N08810 / N08811 | Alloys 800H and 800HT | 65 ksi minannealed | — |
| Free-Cutting Brass C36000Leaded 61 Cu – 3 Pb – 36 Zn brass, the standard screw-machine alloy | ASTM B16 rod and bar | C36000 | Free-cutting brass (Alloy 360) | 55 ksi minH02 half-hard (½–1 in.) | — |
| Naval Brass C46400Tin-bearing alpha-beta brass with dezincification resistance | ASTM F468 / F467 fasteners · ASTM B21 rod and bar | C46400 | Naval brass (Alloy 464, 60 Cu – 39 Zn – 1 Sn) | 50–80 ksiF468 full size | — |
| Cartridge Brass C26000Single-phase 70 Cu – 30 Zn alpha brass with the best cold formability of the brasses | ASTM F468 / F467 fasteners · ASTM B36 / B927 | C26000 | Cartridge brass, 70-30 (Alloy 260) | 60–90 ksiF468 full size | — |
| Phosphor Bronze C51000 / C54400Copper-tin-phosphorus bronze with high fatigue strength and spring properties | ASTM F468 / F467 fasteners · ASTM B139 rod | C51000 · C54400 | Phosphor bronze 5 % A (Alloy 510) and free-cutting phosphor bronze (Alloy 544) | 60–90 ksiF468 full size | — |
| Low-Silicon Bronze C65100Copper with 1.5 percent silicon — the cold-headed silicon bronze fastener alloy | ASTM F468 / F467 fasteners · ASTM B98 rod | C65100 | Low-silicon bronze B (Alloy 651) | 70–100 ksiF468 (¼–¾ in.) | — |
| High-Silicon Bronze C65500Copper with 3 percent silicon and manganese — the general-purpose wrought silicon bronze | ASTM F468 / F467 fasteners · ASTM B98 rod | C65500 | High-silicon bronze A (Alloy 655, Everdur) | 50–80 ksiF468 full size | — |
| Aluminum Bronze C61400Single-phase iron-bearing aluminum bronze with high strength and seawater resistance | ASTM F468 / F467 fasteners · ASTM B150 rod and bar | C61400 | Aluminum bronze D (Alloy 614, 7 % Al – 2.5 % Fe) | 75–110 ksiF468 full size | — |
| Nickel-Aluminum Bronze C63000Two-phase nickel-aluminum bronze, among the strongest of the wrought copper alloys and the strongest fastener alloy in ASTM F468 | ASTM F468 / F467 fasteners · ASTM B150 rod and bar | C63000 | Nickel-aluminum bronze (Alloy 630, 10 % Al – 5 % Ni – 3 % Fe) | 100–130 ksiF468 full size | — |
| Aluminum-Silicon Bronze C64200Free-machining aluminum bronze with silicon for chip control | ASTM F468 / F467 fasteners · ASTM B150 rod and bar | C64200 | Aluminum-silicon bronze (Alloy 642, 7 % Al – 2 % Si) | 75–110 ksiF468 full size | — |
| Bearing Bronze C93200 (SAE 660)Continuous-cast 83 Cu – 7 Sn – 7 Pb – 3 Zn bearing bronze | ASTM B505 continuous-cast bar | C93200 | High-leaded tin bronze (SAE 660, Alloy 932) | 35 ksi minB505 | — |
| Cast Aluminum Bronze C95400Continuous-cast 85 Cu – 11 Al – 4 Fe aluminum bronze, heat treatable | ASTM B505 continuous-cast bar | C95400 | Aluminum bronze 9C (Alloy 954, 11 % Al – 4 % Fe) | 85 ksi minas cast | — |
| Cast Nickel-Aluminum Bronze C95500Continuous-cast 81 Cu – 11 Al – 4 Ni – 4 Fe nickel-aluminum bronze, heat treatable | ASTM B505 continuous-cast bar | C95500 | Nickel-aluminum bronze 9D (Alloy 955, 11 % Al – 4 % Ni – 4 % Fe) | 95 ksi minas cast | — |
| AISI 4140 Alloy Steel (UNS G41400)Medium-carbon chromium-molybdenum alloy steel, supplied annealed, normalised or quenched and tempered | ASTM A322 bar · ASTM A434 Q&T bar | G41400 · G41420 | AISI 4140 / 4142 chromium-molybdenum steel | — | — |
| AISI 4340 Alloy Steel (UNS G43400)Medium-carbon nickel-chromium-molybdenum alloy steel with deep hardenability, supplied annealed or quenched and tempered | ASTM A322 bar · ASTM A434 Q&T bar | G43400 · G43406 | AISI 4340 / E4340 nickel-chromium-molybdenum steel | — | A194 43companion nut grade |
| 1018 Carbon Steel (UNS G10180)Low-carbon steel, cold drawn | ASTM A108 cold-finished bar · chemistry per ASTM A29 / SAE J403 | G10180 | AISI/SAE 1018 | 64 ksicold drawn (typical) | — |
| 1020 Carbon Steel (UNS G10200)Low-carbon steel | ASTM A108 cold-finished bar · chemistry per ASTM A29 / SAE J403 | G10200 | AISI/SAE 1020 | 61 ksicold drawn (typical) | — |
| 1045 Carbon Steel (UNS G10450)Medium-carbon steel, hardenable | ASTM A108 cold-finished bar · chemistry per ASTM A29 / SAE J403 | G10450 | AISI/SAE 1045 | 91 ksicold drawn (typical) | — |
| 1117 Free-Machining Carbon Steel (UNS G11170)Resulfurized low-carbon steel for machining and case hardening | ASTM A108 / A29 bar | G11170 | AISI/SAE 1117 | 69 ksicold drawn (typical) | — |
| 1144 Free-Machining Carbon Steel (UNS G11440)Resulfurized medium-carbon steel, high strength as drawn | ASTM A108 / A29 / A311 bar | G11440 | AISI/SAE 1144 | 108 ksicold drawn (typical) | — |
| 12L14 Leaded Free-Machining Steel (UNS G12144)Leaded, resulfurized, rephosphorized low-carbon steel | ASTM A108 / A29 bar | G12144 | AISI/SAE 12L14 | 78 ksicold drawn (typical) | — |
| 4142 Alloy Steel (UNS G41420)Chromium-molybdenum alloy steel, slightly higher carbon than 4140 | ASTM A322 / A434 alloy steel bar | G41420 | AISI/SAE 4142 | 110 ksi minA434 Class BB (≤1½ in.) | — |
| 4330V Modified Alloy SteelNickel-chromium-molybdenum-vanadium alloy steel, high toughness | AMS 6427 (aircraft quality) · AMS 6411 (vacuum-arc remelted) | K23080 | AISI 4330 modified (vanadium) | 220 ksiAMS 6411 min | — |
| 300M Ultra-High-Strength Alloy SteelSilicon-modified 4340, 280 ksi class | AMS 6257 · AMS 6419 · AMS 6417 (vacuum-arc remelted) | K44220 | AISI 4340 modified (silicon, vanadium) | 270 ksiAMS 6417 min | — |
| ETD150 Elevated-Temperature-Drawn SteelElevated-temperature-drawn medium-carbon alloy steel, 150 ksi min | Proprietary (Niagara LaSalle e.t.d. 150®) · producer states it meets AMS 6378 | — (proprietary; 4100-series alloy base) | 4100-series (4140-type) alloy with a machinability additive, elevated-temperature drawn | 150 ksi minas drawn | — |
| ASTM A36 Structural Carbon SteelStructural carbon steel, 36 ksi yield | ASTM A36 / A36M | K02600 | ASTM A36 | 58–80 ksi | — |
| 817M40 / EN24 Alloy SteelBritish nickel-chromium-molybdenum alloy steel, near equivalent of 4340 | BS 970-1 (817M40) · nearest EN 10083-3 grade 34CrNiMo6 | — | BS 970 817M40 (EN24), near 4340 | 850–1000 MPa (123–145 ksi)condition T | — |
Strength values are specification minimums for the size range or condition shown (typical values are marked); larger diameters are often lower. Grades with the same UNS number are not always interchangeable — heat treatment, testing and marking differ between specifications. Check the data sheet, or ask our team before substituting.