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Machine screw diameter is measured on the outside of the threads.

Combo truss head machine screw diameter

Diameter and Thread count

Matching Products

Click on a product # for additional info

Prod. # Description Buy
SAE flat washers, Zinc plated steel, #8
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
$0.05 / ea
$1.75 / 100
$14.80 / 1,000
Lock washers, Zinc plated steel, #8
Split lock washers place tension against a nut after tightening, to help prevent loosening.
$0.07 / ea
$1.71 / 100
$14.30 / 1,000

See also

Metric machine screw

Metric machine screws

Screws with machine threads for use with a nut or in a tapped hole.

Socket product

Socket screws

Screws with an Allen wrench drive.