Heavy Duty 7/16 Inch Tooth Lock Washers 4000 Pieces Zinc Plated Steel Internal External Tooth Design Delivers No Wiggle Room Security To Keep Nuts Tight And Provides Rock Solid Electrical Grounding For Every Project
✔️ Spring steel zinc coated 04375 inch OD C40 rating
Packaged in sets of four thousand, these internal external tooth lock washers stop nuts from backing off on vibrating trailers, shop tools, and control boxes. The sharp twisted teeth punch through paint and oxide layers to bite directly into softer materials like aluminum or plastic. They deliver absolute zero wiggle room and act as solid electrical grounding pads for sensitive circuitry.
✅ Spring tempered alloy meets Rockwell C40 to C50 hardness requirements✅ Transparent zinc finish fights surface corrosion and rust buildup
✅ Outer edge spans from one point zero four five to one point zero seven inches
✅ Center hole clearance ranges between point four four eight and point four six four inches
✅ Manufactured to meet ASME B18.21.1 commercial fastener standards
💡 How can a handy stash of serrated tooth lock washers keep bolts from shaking loose on pickup trucks and construction gear
Swinging into these specific washers saves you from daily retightening and keeps your machines running straight.
- Dual angled cut teeth physically anchor the nut into plywood and soft aluminum plates so things stay locked down
- Heat treated steel springs back strong to maintain clamp force when engine torque hits hard
- Clear zinc electroplate stops flash rust while keeping the path open for steady static drainage