Flange bolts are machine threaded for use with a nut. They have a flange under the head that acts like a built in flat washer. This bolt is identifiable by the ridge or surrounding the bolt head, this built-in washer under the head of the Bolt acts to distribute the clamping load over a greater area. These bolts are sometimes called Frame bolts. A hexagonal head for use with a wrench.
Following are the specification for Brass Flange Bolts.
Flange Bolt Diameter | Head/Wrench Size* |
---|---|
Hex Flange Bolt (IFI-111) and Hex Flange Lag | |
1/4" | 3/8" |
5/16" | 1/2" |
3/8" | 9/16" |
7/16" | 5/8" |
1/2" | 3/4" |
9/16" | 13/16" |
5/8" | 15/16" |
3/4" | 1-1/8" |
* This is the width across the flats. |
All measurements are in mm.