Flange bolts have a circular flange under the head that acts like a washer to distribute the load. Flange bolts that are non-serrated are sometimes called frame bolts.

Flange bolts, Stainless steel 18-8, 3/8"-16 x 1-1/2"

Serrated full thread hex flange bolts

Full thread, Serrated

A hexagonal head for use with a wrench. Meets IFI-111 (2002). Serrated heads are designed to prevent loosening.

Matching Products

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Prod. # Description Buy
7405
Flange nuts serrated, Stainless steel 18-8, 3/8"-16
A nut with a built in washer which is serrated to resist loosening.
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$0.36 each
$24.25 / 100
$213.00 / 1000

See also

Flange bolts

Metric flange bolts

Flange bolts have a flange on the bottom of the head that distributes the load like a washer.