You are here: Home > Screws > Serrated Flange Screws

Serrated Flange Bolts (Serrated Flange Screws)

What is a flange screw/flange bolt?

A flange bolt/screw has a one piece hexagonal head with a round washer (flange) that is serrated on the bottom for locking purposes. The wide bearing surface of the washer distributes the load evenly and eliminates the need for a secondary washer. While technically a screw it is most commonly referred to as a bolt.


Available in carbon steel with a zinc, black oxide and green zinc (grounding screw) finish, Grade 5 steel with zinc finish, and also Stainless steel 18-8.