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18-8 Stainless Steel Distorted-Thread Cap Locknuts
An irregularly shaped thread grips the bolt for a stronger hold than nylon-insert cap locknuts. Also known as acorn locknuts, a smooth rounded head that covers and protects threads while providing a finished appearance. Made from 18-8 stainless steel, they have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
4-40 | 5/32" | 1/4" | 1/4" | 10 | 000000000 | 000000 |
6-32 | 5/32" | 5/16" | 11/32" | 10 | 000000000 | 00000 |
8-32 | 5/32" | 5/16" | 11/32" | 10 | 000000000 | 00000 |
10-24 | 3/16" | 3/8" | 13/32" | 10 | 000000000 | 00000 |
10-32 | 3/16" | 3/8" | 13/32" | 10 | 000000000 | 00000 |
1/4"-20 | 1/4" | 7/16" | 15/32" | 10 | 000000000 | 00000 |
1/4"-28 | 1/4" | 7/16" | 15/32" | 10 | 000000000 | 00000 |
5/16"-18 | 5/16" | 1/2" | 17/32" | 5 | 000000000 | 00000 |
5/16"-24 | 5/16" | 1/2" | 17/32" | 5 | 000000000 | 00000 |
3/8"-16 | 3/8" | 9/16" | 5/8" | 5 | 000000000 | 00000 |
3/8"-24 | 3/8" | 9/16" | 5/8" | 5 | 000000000 | 00000 |
7/16"-14 | 7/16" | 5/8" | 11/16" | 1 | 000000000 | 0000 |
7/16"-20 | 7/16" | 5/8" | 11/16" | 1 | 000000000 | 0000 |
1/2"-13 | 1/2" | 3/4" | 13/16" | 1 | 000000000 | 00000 |
1/2"-20 | 1/2" | 3/4" | 13/16" | 1 | 000000000 | 00000 |
5/8"-11 | 19/32" | 1" | 63/64" | 1 | 000000000 | 0000 |
3/4"-10 | 11/16" | 1 1/16" | 1 3/16" | 1 | 000000000 | 0000 |
Metric Nylon-Insert Cap Locknuts
A nylon insert on these metric nuts prevents vibration from loosening them, and a domed head protects the threads at the end of the bolt from damage and debris. These nuts are reusable, but the nylon insert’s holding power decreases with each use. Also known as acorn nuts, they create a finished appearance and can reduce snagging on wires and insulation. Nuts meet DIN 986, an international standard for domed cap nut dimensions.
These nuts are made of strong and wear-resistant Class 6 steel. A zinc plating extends the life of the nut by protecting the inner steel from rust.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Dp., mm | Wd., mm | Ht., mm | Insert Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Class 6 | |||||||||
M4 | 0.7 | 2.3 | 7 | 9.6 | 245° | DIN 986 | 50 | 000000000 | 000000 |
M5 | 0.8 | 3.5 | 8 | 10.5 | 245° | DIN 986 | 25 | 000000000 | 0000 |
M6 | 1 | 3.9 | 10 | 12 | 245° | DIN 986 | 25 | 000000000 | 0000 |
M8 | 1.25 | 5.2 | 13 | 14 | 245° | DIN 986 | 25 | 000000000 | 00000 |
M10 | 1.5 | 6.4 | 16 | 18 | 245° | DIN 986 | 10 | 000000000 | 0000 |
M12 | 1.75 | 8.3 | 18 | 23 | 245° | DIN 986 | 5 | 000000000 | 0000 |
M16 | 2 | 11.3 | 24 | 28 | 245° | DIN 986 | 1 | 000000000 | 0000 |
M20 | 2.5 | 13.5 | 30 | 35 | 245° | DIN 986 | 1 | 000000000 | 0000 |
Nylon-Insert Cap Locknuts
The nylon cap covers and grips the threads to resist loosening. They’re reusable, but their holding power lessens with each use. Nuts are steel with a nylon 6/6 cap and insert.
Zinc-plated nuts have a layer of zinc that protects the steel from rust in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Steel—Grade 2 | |||||||
8-32 | 9/64" | 11/32" | 23/64" | 250° | 25 | 000000000 | 00000 |
10-32 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
1/4"-20 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
1/4"-28 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
5/16"-24 | 1/4" | 1/2" | 1/2" | 250° | 25 | 000000000 | 0000 |
3/8"-24 | 21/64" | 9/16" | 5/8" | 250° | 25 | 000000000 | 00000 |
Zinc-Plated Steel—Grade 2 | |||||||
8-32 | 9/64" | 11/32" | 23/64" | 250° | 25 | 000000000 | 0000 |
10-24 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
10-32 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
1/4"-20 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
5/16"-18 | 1/4" | 1/2" | 1/2" | 250° | 10 | 000000000 | 0000 |
3/8"-16 | 21/64" | 9/16" | 5/8" | 250° | 25 | 000000000 | 00000 |
Zinc-Plated Steel—Grade 5 | |||||||
3/8"-24 | 21/64" | 9/16" | 5/8" | 250° | 10 | 000000000 | 00000 |
18-8 Stainless Steel Vibration-Resistant Cap Locknuts
A nylon patch bonded to the threads of these reusable nuts adds friction to prevent loosening under vibration. However, the patch's strength lessens with each use. These nuts have good chemical resistance and may be mildly magnetic because they’re made of 18-8 stainless steel. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
Black-oxide stainless steel cap nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Thread | Thread Locker | |||||||
---|---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Type | Max. Temp., °F | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
10-24 | 3/16" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 000000 |
10-32 | 3/16" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
12-24 | 7/32" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
1/4"-20 | 1/4" | 7/16" | 15/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
1/4"-28 | 1/4" | 7/16" | 15/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
5/16"-18 | 19/64" | 1/2" | 17/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
3/8"-16 | 3/8" | 9/16" | 5/8" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
3/8"-24 | 3/8" | 9/16" | 5/8" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
7/16"-14 | 7/16" | 5/8" | 45/64" | Nylon Patch | 250° | 1 | 000000000 | 0000 |
1/2"-13 | 1/2" | 3/4" | 13/16" | Nylon Patch | 250° | 1 | 000000000 | 0000 |
5/8"-11 | 5/8" | 15/16" | 1" | Nylon Patch | 250° | 1 | 000000000 | 00000 |
3/4"-10 | 3/4" | 1 1/16" | 1 5/32" | Nylon Patch | 250° | 1 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
10-32 | 3/16" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
1/4"-20 | 1/4" | 7/16" | 15/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
Metric 18-8 Stainless Steel Vibration-Resistant Cap Locknuts
To resist loosening from vibration, these metric locknuts have a nylon patch bonded to their threads that adds friction. They’re reusable, but their nylon patch’s strength decreases with each use. Made of stainless steel, they have good chemical resistance and may be mildly magnetic. Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | Thread Locker | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Dp., mm | Wd., mm | Ht., mm | Type | Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||
M5 | 0.8 | 5.6 | 8 | 10 | Nylon Patch | 250° | DIN 1587 | 5 | 000000000 | 000000 |
M6 | 1 | 5.7 | 10 | 12 | Nylon Patch | 250° | DIN 1587 | 5 | 000000000 | 00000 |
M8 | 1.25 | 8.2 | 13 | 15 | Nylon Patch | 250° | DIN 1587 | 5 | 000000000 | 00000 |
M10 | 1.5 | 9.7 | 17 | 18 | Nylon Patch | 250° | DIN 1587 | 1 | 000000000 | 00000 |
M12 | 1.75 | 12.2 | 19 | 22 | Nylon Patch | 250° | DIN 1587 | 1 | 000000000 | 00000 |
Low-Strength Steel Distorted-Thread Cap Locknuts
For a stronger hold than nylon-insert cap locknuts, these locknuts have an irregularly shaped thread that grips the bolt and resists loosening from vibration. They are made of Grade 2 steel, so they are about half the strength of medium-strength steel nuts and are often used in light duty applications, such as securing access panels. A zinc-plated finish resists corrosion in wet environments. Also known as acorn locknuts, their smooth rounded head gives a finished appearance while covering and protecting threads.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 2 | ||||||
6-32 | 5/32" | 5/16" | 11/32" | 50 | 000000000 | 000000 |
8-32 | 5/32" | 5/16" | 11/32" | 50 | 000000000 | 00000 |
10-24 | 3/16" | 3/8" | 13/32" | 25 | 000000000 | 00000 |
10-32 | 3/16" | 3/8" | 13/32" | 25 | 000000000 | 00000 |
1/4"-20 | 19/64" | 7/16" | 15/32" | 50 | 000000000 | 00000 |
5/16"-18 | 23/64" | 1/2" | 17/32" | 25 | 000000000 | 00000 |
3/8"-16 | 27/64" | 9/16" | 5/8" | 25 | 000000000 | 00000 |
1/2"-13 | 1/2" | 3/4" | 13/16" | 5 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Vibration-Resistant Cap Locknuts
With a nylon patch bonded to their threads for added friction, these nuts resist coming loose from vibration. They’re reusable, but the patch’s strength decreases with each use. Made of 316 stainless steel, they have excellent resistance to chemicals and salt water. Also known as acorn nuts, these cap nuts have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | Thread Locker | |||||||
---|---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Type | Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
10-24 | 3/16" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 000000 |
10-32 | 3/16" | 3/8" | 13/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
1/4"-20 | 1/4" | 7/16" | 15/32" | Nylon Patch | 250° | 5 | 000000000 | 00000 |
5/16"-18 | 5/16" | 1/2" | 17/32" | Nylon Patch | 250° | 1 | 000000000 | 0000 |
3/8"-16 | 3/8" | 9/16" | 5/8" | Nylon Patch | 250° | 1 | 000000000 | 0000 |
1/2"-13 | 1/2" | 3/4" | 13/16" | Nylon Patch | 250° | 1 | 000000000 | 00000 |
5/8"-11 | 5/8" | 15/16" | 1" | Nylon Patch | 250° | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Distorted-Thread Cap Locknuts
With an irregularly shaped thread, these locknuts grip the bolt for a stronger hold than nylon-insert cap nuts and resist loosening from vibration. They’re made from 316 stainless steel, so they have excellent resistance to chemicals and salt water. Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.