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

Slotted round head machine screw diameter

Diameter and Thread count

Matching Products

Click on a product # for additional info

Prod. # Description Buy
2974
SAE flat washers, Zinc plated steel, #8
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
Add
$0.07 / ea
$1.75 / 100
$14.10 / 1000
3021
Lock washers, Zinc plated steel, #8
Split lock washers place tension against a nut after tightening, to help prevent loosening.
Add
$0.07 / ea
$1.71 / 100
$14.30 / 1000

Related Products

Slotted bits

Driver bits

Bits for slotted screws.

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.