Nyloc Nuts. 1/4" UNF Hex Head Set Screw, Nyloc Nut & Washer Set – Zinc Plated Steel. Includes: 1 × Set Screw, 1 × Nyloc Nut, 1 × Washer. Hex Bolts - UNF. UNF Bolts & Set Screws. Thread Size: 1/4" UNF (28 TPI).
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