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Socket button head diameter is measured on the outside of the threads.

Socket button head diameter

Diameter and Thread count

Matching Products

Click on a product # for additional info

Prod. # Description Buy
9480
USS flat washers, Chrome plated steel, 5/16"
USS pattern is the most common type of flat washer.
$1.26 / ea
$10.55 / 10
$97.10 / 100
9486
SAE flat washers, Chrome plated steel, 5/16"
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
$1.28 / ea
$10.55 / 10
$97.10 / 100

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