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External tooth lock washers have serrations around the outer diameter, which provide better holding power due to a greater surface area. They provide maximum torsionsal resistance and prevent loosening from vibration and/or corrosion. External tooth lock washers work best with large head screws such as: round, pan, binding, or washer head screws.
From the Manufacturer
External tooth lock washers have serrations around the outer diameter, which provide better holding power due to a greater surface area. They provide maximum torsionsal resistance and prevent loosening from vibration and/or corrosion. External tooth lock washers work best with large head screws such as: round, pan, binding, or washer head screws.
N. V. Yanez
Reviewed in Canada on June 26, 2023
The box was opened inside the Amazon envelope. Only 46 out of 50 washers arrived. Also the description shows 12 teeth washers, the washers I got only have 8.
Harry S
Reviewed in the United States on July 31, 2021
I used these for 5/16 rivet nuts in a 3/8 hole. strong, worked great.
Michelle Hall
Reviewed in the United States on February 27, 2017
On time and as expected
J. Savoie
Reviewed in the United States on September 2, 2016
perfect
George
Reviewed in the United States on July 23, 2016
Great. I use these to install chrome oil pans.
Daniel Johnson
Reviewed in the United States on December 7, 2014
Good product!
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