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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Nuts, Materials, and Finishes
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High-Strength Steel Thin Hex Nuts—Grade 8
Also known as jam nuts, these are about half the height of standard hex nuts. Use in low-clearance applications or jam one against a standard hex nut to hold it in place. They're about 25% stronger than medium-strength steel thin hex nuts.
Zinc yellow-chromate plated steel nuts are more corrosion resistant in wet environments than zinc-plated steel nuts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | ASME B18.2.2 | 100 | 000000000 | 000000 |
| 1/4"-28 | 7/16" | 5/32" | ASME B18.2.2 | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 3/16" | ASME B18.2.2 | 50 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | ASME B18.2.2 | 50 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | ASME B18.2.2 | 50 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 7/32" | ASME B18.2.2 | 50 | 000000000 | 00000 |
| 7/16"-14 | 11/16" | 1/4" | ASME B18.2.2 | 25 | 000000000 | 00000 |
| 7/16"-20 | 11/16" | 1/4" | ASME B18.2.2 | 25 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 5/16" | ASME B18.2.2 | 25 | 000000000 | 00000 |
| 1/2"-20 | 3/4" | 5/16" | ASME B18.2.2 | 25 | 000000000 | 00000 |
| 9/16"-12 | 7/8" | 5/16" | ASME B18.2.2 | 10 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 5/16" | ASME B18.2.2 | 20 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 3/8" | ASME B18.2.2 | 10 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/8" | ASME B18.2.2 | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | ASME B18.2.2 | 10 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 27/64" | ASME B18.2.2 | 10 | 000000000 | 00000 |
| 7/8"-9 | 1 5/16" | 31/64" | ASME B18.2.2 | 5 | 000000000 | 0000 |
| 7/8"-14 | 1 5/16" | 31/64" | ASME B18.2.2 | 5 | 000000000 | 00000 |
| 1"-8 | 1 1/2" | 35/64" | ASME B18.2.2 | 5 | 000000000 | 00000 |
| 1"-14 | 1 1/2" | 35/64" | ASME B18.2.2 | 5 | 000000000 | 00000 |
| 1 1/8"-7 | 1 11/16" | 39/64" | ASME B18.2.2 | 1 | 000000000 | 0000 |
| 1 1/8"-12 | 1 11/16" | 39/64" | ASME B18.2.2 | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 1 7/8" | 23/32" | ASME B18.2.2 | 1 | 000000000 | 0000 |
| 1 1/4"-12 | 1 7/8" | 23/32" | ASME B18.2.2 | 1 | 000000000 | 0000 |
| 1 3/8"-6 | 2 1/16" | 25/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
| 1 1/2"-6 | 2 1/4" | 27/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
| 1 1/2"-12 | 2 1/4" | 27/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
| 1 3/4"-12 | 2 5/8" | 31/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
| 2"-4 1/2 | 3" | 1 3/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
| 2"-12 | 3" | 1 3/32" | ASME B18.2.2 | 1 | 000000000 | 00000 |
Low-Strength Steel Thin Hex Nuts
Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels. Some of these screws meet ISO and DIN dimensional standards.
Nuts with fine and extra-fine thread spacing are less likely to loosen from vibration than nuts with coarse thread spacing.
Zinc-plated and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Spacing | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Class 04 | ||||||||
| M4 | 0.7 | Coarse | 7 | 2.2 | DIN 439B, ISO 4035 | 100 | 000000000 | 00000 |
| M5 | 0.8 | Coarse | 8 | 2.7 | DIN 439B, ISO 4035 | 100 | 000000000 | 0000 |
| M6 | 1 | Coarse | 10 | 3.2 | DIN 439B, ISO 4035 | 100 | 000000000 | 0000 |
| M8 | 1 | Fine | 13 | 4 | DIN 439B, ISO 4035 | 25 | 000000000 | 00000 |
| M8 | 1.25 | Coarse | 13 | 4 | DIN 439B, ISO 4035 | 100 | 000000000 | 00000 |
| M10 | 1.25 | Fine | 17 | 5 | DIN 439B, ISO 4035 | 25 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 17 | 5 | DIN 439B, ISO 4035 | 50 | 000000000 | 00000 |
| M12 | 1.5 | Fine | 19 | 6 | DIN 439B, ISO 4035 | 25 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | 19 | 6 | DIN 439B, ISO 4035 | 50 | 000000000 | 00000 |
| M14 | 1.5 | Fine | 22 | 7 | DIN 439B, ISO 4035 | 25 | 000000000 | 0000 |
| M14 | 2 | Coarse | 22 | 7 | DIN 439B, ISO 4035 | 10 | 000000000 | 0000 |
| M16 | 1.5 | Fine | 24 | 8 | DIN 439B, ISO 4035 | 10 | 000000000 | 0000 |
| M16 | 2 | Coarse | 24 | 8 | DIN 439B, ISO 4035 | 25 | 000000000 | 00000 |
| M18 | 1.5 | Fine | 27 | 9 | DIN 439B, ISO 4035 | 5 | 000000000 | 0000 |
| M20 | 1.5 | Extra Fine | 30 | 10 | DIN 439B, ISO 4035 | 10 | 000000000 | 0000 |
| M20 | 2.5 | Coarse | 30 | 10 | DIN 439B, ISO 4035 | 10 | 000000000 | 00000 |
| M22 | 1.5 | Fine | 32 | 11 | DIN 439B, ISO 4035 | 5 | 000000000 | 0000 |
| M24 | 3 | Coarse | 36 | 12 | DIN 439B, ISO 4035 | 5 | 000000000 | 00000 |
| M30 | 2 | Fine | 46 | 15 | DIN 439B, ISO 4035 | 1 | 000000000 | 0000 |
| M30 | 3.5 | Coarse | 46 | 15 | DIN 439B, ISO 4035 | 1 | 000000000 | 0000 |
| M36 | 3 | Fine | 55 | 18 | DIN 439B, ISO 4035 | 1 | 000000000 | 00000 |
High-Strength Steel Thin Nylon-Insert Locknuts
Half the height of standard nylon-insert locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. They have a nylon insert that grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel thin locknuts. All have a finish that resists corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 13/64" | Not Rated | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 1/4" | Not Rated | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 17/64" | Not Rated | 100 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 17/64" | Not Rated | 50 | 000000000 | 00000 |
| 7/16"-14 | 5/8" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 7/16"-20 | 5/8" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 25/64" | Not Rated | 10 | 000000000 | 0000 |
| 1 1/4"-12 | 1 13/16" | 3/4" | Not Rated | 1 | 000000000 | 00000 |
| 1 1/2"-12 | 2 3/16" | 51/64" | Not Rated | 1 | 000000000 | 00000 |