Six Piece M20 Stainless Steel Split Lock Washers Heavy Duty Hardware Fasteners Built Like Tanks To Lock Bolts And Nuts Down With Zero Wiggle Room On Construction Sites

M20 heavy duty stainless split lock washers secure hardware
✔️ 6 pack 304ss 20.3mm ID x 4.8mm thick rust proof steel

You get six precision cut stainless steel split ring washers per box. They grip firmly against bolt heads to stop vibration loosening. Crews use them on truck beds, fence posts, deck frames, and marine gear. Outdoor projects stay tight through rain and road salt.

✅ M20 threaded hardware accepts standard nuts and bolts easily
✅ Inner hole measures 20.3mm or 0.79in for perfect fit
✅ Plate thickness hits 4.8mm or 0.19in for solid torque transfer
✅ Grade 304 metal fights surface rust during outdoor work
✅ Light magnetic pull comes from standard manufacturing steps

💡 How do spring lock washers help keep equipment assemblies from shaking loose?
- Offset prongs bite into mating metal when you crank down the nut
- Continuous spring pressure grabs vibration before fasteners slip free
- Thin profiles slide under standard flanges on decks and trailers
- Shop teams pick these up for reliable mechanical assembly tasks

✝️