Internal Tooth WasherSKU ID: ASF-ITW-M4
An internal tooth lock washer has teeth that extend radially inward to bite into the bearing surface. The internal tooth lock washer is designed to prevent a nut or bolt head from loosening with the strut action set up by the teeth. The teeth, also, absorb shock and vibration. The teeth abrade the grounding surface in electrical grounding applications to improve the electrical connection.
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