Flange bolts, Full thread, Grade 8 steel plain finish, 5/16"-18 x 1/2"
Non-serrated full thread grade 8 hex flange bolts

Prod. # Length Each price Bag price Bulk price Price Buy
17243 1/2" $0.26 / ea $19.63 / 100 $169.00 / 1,000 $0.26 / ea $19.63 / 100 $169.00 / 1,000
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Flange bolt dimensions - Side view
Flange bolt dimensions - Top view
Product details
Bolt Depot product# 17243
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 Yes
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 1/2"
Thread direction Right hand
Flange diameter Maximum 0.680"
Flange height Minimum 0.050"
Width across the flats 1/2"
Head height Maximum 0.320"

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.