Case studies.
Jobs from our Houston shop: what the customer needed, what we made and how it turned out. Customers are never named.
128 heavy hex nuts in A194 Grade 8C, shipped in three working days to a refinery that was down
A refinery was down and needed 128 heavy hex nuts in ASTM A194 Grade 8C. We machined them from round bar, ran the shop on 24-hour shifts and shipped within three working days of the order.
2-1/4" stud bolts in 347 stainless, with two heavy hex nuts each, delivered in five days for unplanned maintenance
2-1/4"-8 UN × 22" stud bolts in ASTM A193 B8C Class 1, each with two A194 Grade 8C heavy hex nuts. The studs were single-point thread cut, the nuts machined from round bar and milled into a hexagon, and the order delivered in five days.
Weight-matched M6 12-point bolt sets, reproduced from a sample, for a turbine-driven coupling
M6 × 22 mm 12-point bolts with 12-point lock nuts, reproduced like for like from a customer sample and supplied weight matched in sets of 8 to keep a turbine-driven coupling in balance.
4" SA-320 L43 studs to drawing, one length with an oil groove, sent hot-shot with acorn nuts and washers
A hot-shot set of 4"-8 UN-2A studs to drawing in SA-320 Grade L43, at 669 mm and 745 mm long, the 745 mm stud with an oil groove, supplied with 4"-8 UN acorn nuts and washers in SA-194 Grade 7.
A193 B16 socket head shoulder screws, ready to ship 24 hours after the customer called
5/8" × 1-1/2" socket head shoulder screws in ASTM A193 Grade B16, the vanadium-strengthened Cr-Mo bolting grade, ready to ship 24 hours after the customer called.
A gun-drilled Custom 450 spindle bolt with a different thread at each end, delivered in 7 business days
A spindle bolt for rotating equipment: 2-5/8"-8 UN-3A on one end, 2-1/4"-8 UN-2A on the other, gun drilled through with NPT threads at both ends of the hole. Custom 450 stainless, heat treated and mechanically tested, delivered in seven business days.
500 A4-80 cap screws for a subsea application, thread rolled, penetrant tested and yield tested
500 M16-2.0 × 70 mm fully threaded hex head cap screws in A4-80 per ISO 3506-1: machined from bar, thread rolled, liquid penetrant tested to ASTM A962M S56 and axial extension yield tested per ISO 3506.
260 Nimonic 80A stud bolts with two nuts each, made on a three-week lead time
260 pieces of 7/8"-9 UNC × 6" stud bolts, each with two nuts, made from Nimonic 80A (UNS N07080), the nickel-chromium superalloy used for turbine bolting, on a three-week lead time.
4" SA-194 2H round nuts and 4-1/4" B7 studs, made for a heat exchanger turnaround
4"-8 UN round nuts in ASME SA-194 Grade 2H, made with 4-1/4" SA-193 B7 studs for a heat exchanger turnaround.
5,000 A-286 flat head socket cap screws for oil and gas assemblies
Flat head socket cap screws, UNC-3A × 1/2", in ASTM A453 Grade 660 Class A (A-286) for oil and gas assemblies. Small parts, big quantities.