Why Choose Our Hex Flange Bolt Serrated
A hex flange bolt serrated combines a hex head, a built-in washer-like flange, and micro teeth on the bearing face to increase friction under load. This design spreads clamping force, speeds assembly, and resists rotation from vibration.
Our BN 73 style serrated hex flange bolts are fully threaded with a hex head and an integrated serrated flange. The serrations increase friction at the joint, offering excellent resistance to loosening from vibration and cyclic loads while maintaining clamp force.
For matched hardware and specialized use cases, consider pairing with our Hex Flange Nut Serrated for maximum anti-backout performance, our Hex Flange Nut Thick for added thread engagement on softer or stacked materials, or stepping over to our Hex Flange Bolt Thread Forming when you need to create threads in sheet or softer substrates.
Fast, Reliable Installation
The integrated flange acts like a captive washer to spread load and protect the joint surface. That means fewer loose parts on the line, faster setups, and consistent torque application with standard hex tooling.
Materials and Finishes
Choose from common property classes for strength and durability needs, along with finishes suited to your environment. Options typically include carbon steel in high-strength classes, stainless for corrosion resistance, and popular protective coatings for shop-floor efficiency and long service life.
Typical Applications
Automotive subframes and brackets, pumps and compressors, conveyors, heavy equipment panels, fixtures and jigs, and any assembly where vibration is part of the day-to-day.
FAQs
What is a hex flange bolt?
It’s a bolt with a hex head and a built-in flange under the head. The flange acts like an integrated washer to spread clamping force, protect the joint surface, and speed up installation by reducing loose hardware.
What is the purpose of serration in flanges?
Serrations are small teeth on the flange face that increase friction against the mating surface. Under load, they help the fastener resist rotation from vibration and shock, so your joint maintains clamp force longer.
What is the difference between serrated and non-serrated?
Serrated flange bolts add anti-rotation grip and are ideal for vibration-prone assemblies. Non-serrated flange bolts still spread load and speed assembly but are gentler on finishes and are preferred where surface marking must be minimized.
