System of Measurement System of Measurement |
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Thread Size Thread Size |
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Hex Nut Profile Hex Nut Profile |
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Thin | Extra-Wide Thin |
Material Material |
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Finish Finish | Show |
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Finish Finish | Hide |
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Locking Type Locking Type |
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Nylon Insert | Flex-Top |
Width Width |
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Thread Direction Thread Direction |
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![]() | Right Hand |
Thread Spacing Thread Spacing |
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Drive Style Drive Style |
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![]() | External Hex |
Specifications Met Specifications Met |
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Insert Maximum Temperature Insert Maximum Temperature |
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More
Choose these locknuts for their adherence to strict military standards for material and construction. 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. A cadmium plating provides corrosion resistance in wet environments and adds lubricity so they thread on smoothly.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||||
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4-40 | 1/4" | 1/8" | 250° | MS21083-N04 | 10 | 000000000 | 000000 |
6-32 | 5/16" | 9/64" | 250° | MS21083-N06 | 10 | 000000000 | 00000 |
8-32 | 11/32" | 3/16" | 250° | MS21083-N08 | 10 | 000000000 | 0000 |
10-32 | 3/8" | 3/16" | 250° | MS21083-N3 | 10 | 000000000 | 0000 |
1/4"-28 | 7/16" | 7/32" | 250° | MS21083-N4 | 10 | 000000000 | 0000 |
1/2"-20 | 3/4" | 5/16" | 250° | MS21083-N8 | 1 | 000000000 | 0000 |
About two-thirds the height of standard flex-top locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. These locknuts have equivalent strength to Grade 8 steel locknuts.
Cadmium-plated locknuts are corrosion resistant in wet environments. The plating adds lubricity so they thread on smoothly.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||
---|---|---|---|---|---|
6-32 | 5/16" | 9/64" | 25 | 000000000 | 000000 |
8-32 | 11/32" | 3/16" | 25 | 000000000 | 00000 |
10-24 | 3/8" | 3/16" | 25 | 000000000 | 00000 |
10-32 | 3/8" | 3/16" | 25 | 000000000 | 00000 |
1/4"-20 | 7/16" | 7/32" | 25 | 000000000 | 00000 |
1/4"-28 | 7/16" | 7/32" | 25 | 000000000 | 00000 |
5/16"-18 | 1/2" | 17/64" | 10 | 000000000 | 0000 |
5/16"-24 | 1/2" | 17/64" | 10 | 000000000 | 0000 |
3/8"-16 | 9/16" | 9/32" | 10 | 000000000 | 0000 |
3/8"-24 | 9/16" | 9/32" | 10 | 000000000 | 0000 |
7/16"-20 | 5/8" | 21/64" | 5 | 000000000 | 0000 |
1/2"-13 | 3/4" | 21/64" | 5 | 000000000 | 0000 |
1/2"-20 | 3/4" | 21/64" | 5 | 000000000 | 0000 |
5/8"-11 | 15/16" | 13/32" | 1 | 000000000 | 0000 |
5/8"-18 | 15/16" | 13/32" | 1 | 000000000 | 0000 |
3/4"-10 | 1 1/16" | 27/64" | 1 | 000000000 | 0000 |
3/4"-16 | 1 1/16" | 27/64" | 1 | 000000000 | 0000 |
7/8"-9 | 1 1/4" | 31/64" | 1 | 000000000 | 00000 |
1"-8 | 1 7/16" | 37/64" | 1 | 000000000 | 00000 |
1"-14 | 1 7/16" | 37/64" | 1 | 000000000 | 00000 |
1 1/8"-12 | 1 5/8" | 41/64" | 1 | 000000000 | 00000 |
1 1/4"-12 | 1 13/16" | 49/64" | 1 | 000000000 | 00000 |
1 1/2"-12 | 2 3/16" | 57/64" | 1 | 000000000 | 00000 |
About half the height and 10% wider than standard hex nuts, use these locknuts in low-clearance applications or jam one against an extra-wide hex nut to hold it in place. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. These locknuts have equivalent strength to Grade 8 steel locknuts. A cadmium plating provides corrosion resistance in wet environments and adds lubricity so they thread on smoothly.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||
---|---|---|---|---|---|
1/4"-20 | 1/2" | 7/32" | 25 | 000000000 | 000000 |
5/16"-18 | 9/16" | 17/64" | 10 | 000000000 | 0000 |
3/8"-16 | 5/8" | 9/32" | 10 | 000000000 | 0000 |
7/16"-14 | 3/4" | 21/64" | 1 | 000000000 | 0000 |
1/2"-13 | 13/16" | 21/64" | 5 | 000000000 | 0000 |
5/8"-11 | 1" | 13/32" | 1 | 000000000 | 0000 |
3/4"-10 | 1 1/8" | 27/64" | 1 | 000000000 | 0000 |
7/8"-9 | 1 5/16" | 31/64" | 1 | 000000000 | 0000 |
1"-8 | 1 1/2" | 37/64" | 1 | 000000000 | 00000 |