HEX FLANGE BOLT
are partially and fully threaded depending on size and length. The point for hex
types is chamfered or rounded; for 12 point, it's flat and chamfered. Typical sizes
range from 3/8" to 3/4"; #10 to 1/2" for serrated hex
; and 1/4" to 1" in diameter
for 12 point.
Hex Flange Bolt features
a ridge around its head to distribute clamping load during the tightening process. The main reason for using this bolt
is to protect joint surfaces of wood & metal from impacts and load.