Nylon lock nuts grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. The bright zinc plating provides corrosion resistance in wet environments.
Diameter - Thread Count Width Across Flats (A/f) Thickness 3/16-24NC (Coarse) 3/8" 0.234" 1/4-20NC (Coarse) 7/16" 0.328" 5/16-18NC (Coarse) 1/2" 0.359" 3/8-16NC (Coarse) 9/16" 0.468" 7/16-14NC (Coarse) 5/8" 0.468" 1/2-13NC (Coarse) 3/4" 0.609" 9/16-12NC (Coarse) 7/8" 0.656" 5/8-11NC (Coarse) 15/16" 0.765"
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