146 piece Nylon Insert Locking Nut assortment set often referred to as Nylon Lock Nuts. The Nuts have a ring of Nylon inlaid which act as a lock to prevent vibration loosening the nut. Size: 35 piece M4 | 35 piece M5 | 25 piece M6 | 25 piece M8 | 16 piece M10 | 10 piece M12. Contained in a plastic compartmented storage case. Brand: Toolzone. .
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