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Hex bolt diameter is measured on the outside of the threads.

Important Note: Due to the plating thickness, only hot dipped galvanized nuts should be used on hot dipped galvanized hex bolts.

Hex bolt diameter

Resources

Diameter and Thread count

Matching Products

Click on a product # for additional info

Prod. # Description Buy
2990
USS flat washers, Hot dipped galvanized steel, 1/2"
USS pattern is the most common type of flat washer.
$0.24 / ea
$19.28 / 100
$170.00 / 1,000
2984
Lock washers, Hot dipped galvanized steel, 1/2"
Split lock washers place tension against a nut after tightening, to help prevent loosening.
$0.19 / ea
$11.77 / 100
$106.00 / 1,000

See also

Metric hex bolt

Metric hex bolts

A bolt with a six sided head.