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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.
Rich W
Reviewed in the United States on December 18, 2024
theses washers were as described and worked perfectly.
Lowell Vanhook
Reviewed in the United States on August 2, 2023
Internal Tooth Lock Washer
harold r brown
Reviewed in the United States on March 29, 2023
Does not hold up, cheap metal
Mary Mary
Reviewed in the United States on December 24, 2021
These are inexpensive and work great, they dig into my 3d printed parts just enough to hold my screws securely without damaging the surface. - Justin Flint
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