Flange bolts have hexagonal heads, designed to be driven by a wrench. The unique characteristic of a flange bolt is the design of the head, from which they get their name. The "flange" of the bolt is a built in (integral) washer. In Imperial sizes, this washer is serrated to act as a lock washer.
Flange bolts are available in both full thread and partial thread varieties. The threading depends upon the lengths of the bolt. Partially threaded flange bolts have a shoulder, and fully threaded flange bolts are threaded to the underside of the flanged head.
Not sure what material you need? Check out our Material Guide to find the right material for your needs!
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