Shopping Cart

Your cart is empty.

Your cart is empty.

310137 5/16-Inch Internal Tooth Lock Washer, 100-Pack

4.5 (1) Write Review
Free shipping on orders over $29.99

$5.79

$ 2 .99 $2.99

In Stock

About this item

  • Uses internal teeth for locking and tension
  • These washers are preferred when the finished appearance is crucial and teeth must be hidden
  • Zinc-plated for moderate corrosion resistance
  • Product Dimension: 2.31" x 2.68" x 1.56"


Product Description

Internal tooth lock washers are hardened, circular washers with twisted prongs or "teeth" extending inward from the inside edge. The internal "teeth" are used to prevent nuts and bolts from loosening, or backing out, caused by vibration and/or corrosion. These have a zinc-plated finish.

From the Manufacturer

Internal tooth lock washers are hardened, circular washers with twisted prongs or "teeth" extending inward from the inside edge. The internal "teeth" are used to prevent nuts and bolts from loosening, or backing out, caused by vibration and/or corrosion. These have a zinc-plated finish.


Lefty Life
2025-08-17 17:16:15
Best product on Amazon.