About Nuts, Materials, and Finishes
More
Low-Strength Steel Nylon-Insert Locknuts
These locknuts 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. About half the strength of medium-strength steel locknuts, they're for light duty fastening applications, such as securing access panels.
Black ultra-corrosion-resistant coated steel nuts are more corrosion resistant in wet environments than zinc-plated steel nuts. They're also known as black luster nuts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Black Ultra-Corrosion-Resistant Coated Steel | ||||||
|---|---|---|---|---|---|---|
| 6-32 | 5/16" | 11/64" | 220° | 5 | 000000000 | 00000 |
| 8-32 | 11/32" | 15/64" | 220° | 5 | 000000000 | 0000 |
| 10-24 | 3/8" | 15/64" | 220° | 5 | 000000000 | 0000 |
| 10-32 | 3/8" | 15/64" | 220° | 5 | 000000000 | 0000 |
| 1/4"-20 | 7/16" | 5/16" | 220° | 5 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 11/32" | 220° | 5 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 29/64" | 220° | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 19/32" | 220° | 5 | 000000000 | 0000 |
Low-Strength Steel Thin Nylon-Insert Locknuts
These locknuts are about half the height of standard nylon-insert locknuts. Use them in light duty low-clearance applications or jam one against a hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
Black ultra-corrosion-resistant coated steel nuts are more corrosion resistant than zinc-plated nuts in wet environments. They're also black luster.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Black Ultra-Corrosion-Resistant Coated Steel | ||||||
|---|---|---|---|---|---|---|
| 6-32 | 5/16" | 1/8" | 220° | 5 | 000000000 | 00000 |
| 8-32 | 11/32" | 11/64" | 220° | 5 | 000000000 | 0000 |
| 10-24 | 3/8" | 11/64" | 220° | 5 | 000000000 | 0000 |
| 10-32 | 3/8" | 11/64" | 220° | 5 | 000000000 | 0000 |
| 1/4"-20 | 7/16" | 13/64" | 220° | 5 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 1/4" | 220° | 5 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 17/64" | 220° | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | 220° | 5 | 000000000 | 0000 |
Metric Medium-Strength Steel
Nylon-Insert Flange Locknuts—Class 8
A nylon insert firmly grips threads to resist loosening and a flange distributes the load over a large area. These nuts are reusable, but their holding power lessens with each use. Suitable for fastening most machinery and equipment, they're comparable in strength to Class 8.8 bolts. Height includes the flange.
Black ultra-corrosion-resistant coated steel nuts are more corrosion resistant in wet environments than zinc-plated steel nuts. They're also known as black luster nuts.
For technical drawings and 3-D models, click on a part number.
Thread | Flange | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia., mm | Thick., mm | Insert Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Black Ultra-Corrosion-Resistant Coated Steel—Class 8 | ||||||||||
| M5 | 0.8 | 8 | 7.1 | 11.8 | 1 | 250° | DIN 6926 | 5 | 000000000 | 00000 |
| M6 | 1 | 10 | 9.1 | 14.2 | 1.1 | 250° | DIN 6926 | 5 | 000000000 | 0000 |
| M8 | 1.25 | 13 | 11.1 | 17.9 | 1.2 | 250° | DIN 6926 | 5 | 000000000 | 0000 |
| M12 | 1.75 | 18 | 16.1 | 26 | 1.8 | 250° | DIN 6926 | 5 | 000000000 | 0000 |