Nuts
Finished and heavy hex, jam, lock, cap, machine screw and tommy bar nuts — A194 grades through exotic alloys.
Finished Hex Nuts
Six-sided fasteners with internal threads for secure connections.
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Heavy Hex Nuts
Robust fastener with a thicker, wider hexagonal shape for high-stress applications.
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Machine Screw Hex Nuts
Small-pattern hex nuts for machine screw sizes.
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Hex Jam Nuts
Half-height nuts for locking against a full nut.
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Lock Nuts
Prevailing-torque and all-metal locking patterns.
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12-Point Flange Nuts
The mating nut for 12-point flange screws: a 12-point wrenching head with an integral washer face.
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Hexagon Cap Nuts
Closed-end design that covers exposed threads.
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Tommy Bar Nuts
Heavy hex nuts with drilled holes for tommy bar attachment.
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Casing Cap Nuts
Round-bodied cap nuts with a hex drive on top, for pump casing studs.
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Custom Nuts
Special nuts built to your drawing or sample.
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For pressure and high-temperature bolting, the nut matters as much as the stud. ASTM A194 matches each nut grade to its bolting: 2H with B7, 2HM with B7M for sour service, 7 with L7 for low temperature, and 8 or 8M with the stainless grades. Heavy hex nuts to ASME B18.2.2 are the standard on flanged joints; finished hex, jam and lock nuts cover general and machinery work.
We machine nuts from bar, so non-standard threads, oversize diameters and exotic alloys cost no more effort than a standard heavy hex. Tommy bar nuts, 12-point flange nuts and cap nuts are made to drawing.