Premium Size 6 External Tooth Lock Washers Made From Heavy Duty Steel With Zinc Plating For Superior Anti Vibration Performance And Reliable Grounding On Soft Materials Like Aluminum Or Plastic To Keep Bolts Locked Down Tight
✔️ #6 Size 0.141-0.150 ID, 0.305 OD, Spring Steel Pinned
This external tooth lock washer is made from spring steel with a zinc plating corrosion resistance. These hardware accessories feature twisted outer teeth act as serrated teeth dig into soft materials like aluminum or plastic when tightened.
✅ Nominal diameter: #6 screw thread compatibility
✅ Inside diameter: 0.141 inch to 0.150 inch
✅ Outside diameter: 0.305 inch to 0.320 inch
✅ Thickness: 0.016 inch to 0.022 inch hardened metal
✅ Rockwell C40-C50 hardness rating for torque retention
💡 What are external tooth lock washers actually used for?
These serrated metal plates work best for fastening bolts down tight on non-steel surfaces where standard flat washers slip under vibration.
- The sharp ground teeth bite straight into plastic or aluminum housing panels
- Zinc coating stops rust buildup while keeping electrical grounding paths clean
- Tight tolerance sizing keeps fastener preload steady during temperature swings
- ASME B18.21.1 standards meet industrial machinery maintenance schedules
- Handy option for HVAC service techs who deal with thin sheet metal ductwork