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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Nuts, Materials, and Finishes
More
Mil. Spec. Medium-Strength Steel Hex Nuts

Choose these nuts for their good corrosion resistance and adherence to strict military standards for material and construction. They're suitable for fastening most machinery and equipment.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium Yellow-Chromate Plated Steel—Grade 5 | ||||||
---|---|---|---|---|---|---|
1/4"-20 | 7/16" | 7/32" | MS51967-2; Fed. Spec. FF-N-836 | 25 | 000000000 | 000000 |
5/16"-18 | 1/2" | 17/64" | MS51967-5; Fed. Spec. FF-N-836 | 25 | 000000000 | 00000 |
3/8"-16 | 9/16" | 21/64" | MS51967-8; Fed. Spec. FF-N-836 | 10 | 000000000 | 0000 |
7/16"-14 | 11/16" | 3/8" | MS51967-11; Fed. Spec. FF-N-836 | 5 | 000000000 | 0000 |
1/2"-13 | 3/4" | 7/16" | MS51967-14; Fed. Spec. FF-N-836 | 10 | 000000000 | 00000 |
9/16"-12 | 7/8" | 31/64" | MS51967-17; Fed. Spec. FF-N-836 | 5 | 000000000 | 00000 |
5/8"-11 | 15/16" | 35/64" | MS51967-20; Fed. Spec. FF-N-836 | 5 | 000000000 | 00000 |
3/4"-10 | 1 1/8" | 41/64" | MS51967-23; Fed. Spec. FF-N-836 | 1 | 000000000 | 0000 |
Mil. Spec. High-Strength Steel Hex Nuts

Choose these nuts for their adherence to strict military standards for material and construction. They're about 25% stronger than medium-strength steel nuts.
Cadmium yellow-chromate plated steel nuts resist corrosion in wet environments.
Black-oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium Yellow-Chromate Plated Steel—Grade 8 | ||||||
---|---|---|---|---|---|---|
1/4"-20 | 7/16" | 7/32" | Fed. Spec. FF-N-836, MS51967-3 | 25 | 000000000 | 000000 |
5/16"-18 | 1/2" | 17/64" | Fed. Spec. FF-N-836, MS51967-6 | 25 | 000000000 | 00000 |
3/8"-16 | 9/16" | 21/64" | Fed. Spec. FF-N-836, MS51967-9 | 10 | 000000000 | 0000 |
7/16"-14 | 11/16" | 3/8" | Fed. Spec. FF-N-836, MS51967-12 | 5 | 000000000 | 0000 |
1/2"-13 | 3/4" | 7/16" | Fed. Spec. FF-N-836, MS51967-15 | 5 | 000000000 | 0000 |
5/8"-11 | 15/16" | 35/64" | Fed. Spec. FF-N-836, MS51967-21 | 5 | 000000000 | 00000 |
3/4"-10 | 1 1/8" | 41/64" | Fed. Spec. FF-N-836, MS51967-24 | 1 | 000000000 | 0000 |
Black-Oxide Steel—Grade 8 | ||||||
1/4"-20 | 7/16" | 7/32" | Fed. Spec. FF-N-836, MS51967-3 | 5 | 000000000 | 0000 |
5/16"-18 | 1/2" | 17/64" | Fed. Spec. FF-N-836, MS51967-6 | 5 | 000000000 | 0000 |
3/8"-16 | 9/16" | 21/64" | Fed. Spec. FF-N-836, MS51967-9 | 1 | 000000000 | 0000 |
7/16"-14 | 11/16" | 3/8" | Fed. Spec. FF-N-836, MS51967-12 | 1 | 000000000 | 0000 |
1/2"-13 | 3/4" | 7/16" | Fed. Spec. FF-N-836, MS51967-15 | 1 | 000000000 | 0000 |
5/8"-11 | 15/16" | 35/64" | Fed. Spec. FF-N-836, MS51967-21 | 1 | 000000000 | 00000 |
3/4"-10 | 1 1/8" | 41/64" | Fed. Spec. FF-N-836, MS51967-24 | 1 | 000000000 | 00000 |