Heavy-Duty 150-Piece Assortment Kit Packed With M3 M4 M5 M6 M8 And M10 Black 304 Stainless Steel Serrated Flange Lock Nuts, Perfect For Tough Garage Repairs, Auto Mechanic Jobs, Or Serious DIY Projects Around The House

304 Steel Lock Nut Assortment 150 Pcs 6 Sizes Repair Kit For
✔️ 150pcs M3 M4 M5 M6 M8 M10 304 Stainless Flange Steel Box

This assortment helps fix cars or machinery easily right in your garage or workshop. You get a handy collection of corrosion-resistant fasteners designed for tough jobs around home and shop. They replace multiple washers and bolts to save assembly time on heavy duty tasks. The box keeps everything organized so you never lose pieces during busy days.

✅ 304 stainless steel resists rust better than plated zinc alternatives
✅ Includes organized plastic box for safe transport and tidy storage
✅ Six common threads from size M3 to M10 cover most standard repairs
✅ Serrated flange bites down to stop loosening during vibration stress

💡 What causes bolts to loosen under vibration in vehicle repairs?
- Metal fatigue and thermal cycling weaken standard threaded joints slowly
- Serrated design locks firmly to metal surfaces to prevent drift issues
- High grade steel withstands constant engine motion without slipping out