Internal Tooth Lock Washers

Internal Tooth Lock Washers

Internal tooth lock washers have twisted teeth around the inside edge. The teeth stay hidden under the screw head or nut while they bite into the fastener and the surface to resist loosening. That makes them a neat choice for small screw heads, electronics and visible assemblies. They are zinc plated, #2 through 1".

Specifications

• Type: internal tooth lock washer
• Sizes: #2, #4, #6, #8, #10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1"
• Finish: zinc plated

Common Uses

• Electronics and electrical components
• Small screw heads and pan head screws
• Visible assemblies where teeth shouldn't show

FAQ

When should I use internal tooth instead of external tooth?
Use internal tooth washers under small heads, or when you want the teeth hidden. Use external tooth for more grip under larger heads.

Do internal tooth washers help with electrical grounding?
Yes. The teeth cut into both surfaces for a good metal-to-metal contact.

Related: External Tooth Lock Washers | Split Lock Washers

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.