Flange bolts

Flange bolts, 1/4" x 2-1/2"

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, 1/4" x 2-1/2"

Non-serrated hex flange bolts

Partial thread (IFI-111)

A hexagonal head for use with a wrench. (Note: Shorter lengths are found under full thread.) These bolts are sometimes called Frame bolts. Meets IFI-111 (2002).

  • Zinc plated grade 8 steel yellow
  • Grade 8 steel plain finish
Serrated full thread hex flange bolts

Full thread (IFI-111), Serrated

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

  • Zinc plated grade 5 steel

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.