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Nut, hex, nyloc, zinc plated, GR 4.8, UNC, 4.763 mm, 24 TPI, Fastbolt.
Brand: Fastbolt
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A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut with a nylon collar that increases friction on the screw thread. Zinc plated fasteners are the most common used plating. This ensures good rust-resisting qualities, appearance and low cost.

Product properties
Brand Fastbolt
Category Nyloc
Outside Diameter (mm) 4.763
Grade 4.8
Material Mild Steel
Series Imperial
Thread Type UNC
Type Nyloc
Surface Finish Zinc Plated
TPI 24.0