Specifications Met Specifications Met |
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System of Measurement System of Measurement |
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Locking Type Locking Type |
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![]() | Flex-Top |
Material Material |
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Finish Finish |
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Thread Fit Thread Fit |
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Hex Nut Profile Hex Nut Profile |
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Thread Direction Thread Direction |
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Drive Style Drive Style |
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Choose these locknuts for their adherence to strict military standards for material and construction. 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 yellow-chromate 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. | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium Yellow-Chromate Plated Steel | ||||||
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4-40 | 1/4" | 5/32" | MS21045-04 | 5 | 000000000 | 00000 |
6-32 | 5/16" | 3/16" | MS21045-06 | 5 | 000000000 | 0000 |
8-32 | 11/32" | 1/4" | MS21045-08 | 5 | 000000000 | 0000 |
10-32 | 3/8" | 1/4" | MS21045-3 | 5 | 000000000 | 0000 |
1/4"-28 | 7/16" | 5/16" | MS21045-4 | 5 | 000000000 | 0000 |
5/16"-24 | 1/2" | 23/64" | MS21045-5 | 5 | 000000000 | 00000 |
3/8"-24 | 9/16" | 15/32" | MS21045-6 | 5 | 000000000 | 00000 |
7/16"-20 | 11/16" | 15/32" | MS21045-7 | 1 | 000000000 | 0000 |
1/2"-20 | 3/4" | 39/64" | MS21045-8 | 1 | 000000000 | 0000 |
9/16"-18 | 7/8" | 11/16" | MS21045-9 | 1 | 000000000 | 00000 |
5/8"-18 | 15/16" | 49/64" | MS21045-10 | 1 | 000000000 | 00000 |
3/4"-16 | 1 1/16" | 57/64" | MS21045-12 | 1 | 000000000 | 00000 |