Nuts have a built-in washer with a serrated face to lock nut tight against panels. 1/4''-20 nuts are perfect to use as a backer nut with Allstar body bolts, nose bolts, and body stud kits.Features. Spin Lock Nuts. Serrated for extra locking strength. Pack of 50Specifications. Color: Black- SKU: MTRST89209
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