3/8 External Internal Combination Tooth Lock Washer With Black Oxide Finish Bulk Pack Of Six Thousand Built Tough Rock Solid Heavy Workhorse Anti Vibration Fasteners For Oversized Holes And Grounding
UPC:
✔️ SAE 1050 Spring Steel C40 Hardness Black Oxide Conversion Coat
The massive bulk set delivers 6000 ext int combo tooth lock washers sized for 3 8 inch hex head bolts and heavy structural assembly work. Machine shops and truck repair garages lean on these rugged fasteners to seal electrical paths and lock down vibrating panels without stripping threads.
✅ Nominal 3/8 inch bore fits standard clearance hole tolerances✅ Precise rockwell hardness keeps shape under maximum torque loads
✅ Dual tooth engagement fights rotational movement on steel frames
✅ Oxide layer provides stable conductivity for proper system grounding
💡 How do combo tooth lock washers stabilize equipment mounts under heavy vibration?
This dual profile design works really handy when standard flat hardware fails to stay put on rough job sites.
- Pronged outer ring digs deep into parent metal to halt unwanted bolt migration
- Notched inner section bites into nut faces to preserve preload strength over time
- Broader wear zone reduces point loading on scratched or worn mounting surfaces
- Alloy composition handles thermal expansion cycles without developing slack gaps