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Nut Type Nut Type | Show |
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![]() | Locknut |
Locking Type Locking Type |
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![]() | Nylon Insert |
Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Hex Nut Profile Hex Nut Profile |
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![]() | Extra-Wide Thin |
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Thread Direction Thread Direction |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Insert Maximum Temperature Insert Maximum Temperature |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Thread Fit Thread Fit |
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Finish Finish |
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About Nuts, Materials, and Finishes
More
High-Strength Steel Extra-Wide
Thin Nylon-Insert Locknuts

About half the height and 10% wider than standard nylon-insert locknuts, use these in low-clearance applications or jam one against an extra-wide 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. Comparable in strength to Grade 8 bolts, these locknuts are about three times stronger than low-strength steel extra-wide thin locknuts.
Black-phosphate steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Each | |
Black-Phosphate Steel—ASTM Grade C | |||||
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2 1/4"-12 | 3 1/2" | 1 15/16" | 250° | 000000000 | 000000 |