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About Nuts, Materials, and Finishes
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Mil. Spec. 18-8 Stainless Steel Thin Nylon-Insert Locknuts

Choose these locknuts for their adherence to strict military standards for material and construction. They have good chemical resistance and may be mildly magnetic. About half the height of standard nylon-insert locknuts, use them in 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.
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. | |
18-8 Stainless Steel | |||||||
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10-32 | 3/8" | 3/16" | 250° | MS21083C3, NASM21083 | 5 | 000000000 | 00000 |