Includes 145 pieces in 7 sizes: M3 (50 pcs), M4 (35 pcs), M5 (25 pcs), M6 (15 pcs), M8 (12 pcs), M10 (4 pcs), M12 (4 pcs). Thread sizes: M3 to M12. These lock nuts are ideal for securing bolts in automotive, construction, machinery, electronics, furniture, and household appliance projects.
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