Filters
Thread density
Coarse (standard) thread
18
(1)
These bolts are all partially threaded. Shorter lengths are found with full thread.
Product details
Bolt Depot product#
17252
Units
US
Category
Flange bolts
Flange bolts have a flange on the bottom of the head that distributes the load like a washer.
Head style
Hex flange
Drive type
External hex
A hexagonal head for use with a wrench.
Dimensional standard
IFI-111 (2002)
Meets IFI-111 (2002).
Fully threaded
No
(Note: Shorter lengths are found under full thread.)
Serrated
No
Flange bolts that are non-serrated are sometimes called frame bolts.
Material
Steel
A tempered medium carbon steel.
Grade
Grade 8
Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications.
Finish
Plain
Unplated finish.
Thread density
Coarse
Diameter
5/16"
Thread count
18
Length
3"
Thread direction
Right hand
Flange diameter
Maximum 0.680"
Flange height
Minimum 0.050"
Thread length
7/8"
Body length
Minimum 1.708"
Width across the flats
1/2"
Head height
Maximum 0.320"
See also
Flange bolts have a flange on the bottom of the head that distributes the load like a washer.
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