M3x0.5mm Stainless Steel Hex Lock Nut 10, 25, 50, 100, 500 Pcs.

Stainless Steel Hex Lock Nut With Nylon Insert. Quantity: 10, 25, 50, 100, 500 Pcs. Nylon Insert Lock Nuts have a captive undersized nylon washer that creates friction with the mating threads to prevent loosening.

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