Hex Flange Bolts
Hex flange bolts are the fasteners you reach for when you want strength, speed, and a cleaner assembly in one move. Our hex flange bolts combine a built-in washer face with precise thread geometry to spread load, resist loosening, and cut install time. If you need a bolt that works as hard as your equipment, our range is ready to go.
Hex Flange Bolts: What Makes Them Different
The best hex flange bolts let you focus on building, not babysitting fasteners. Our range pairs load-spreading flanges with high-strength materials so you get stable, repeatable torque and a clean finish without separate washers. Choose sizes and finishes to match your environment and keep projects moving.
Our hex flange bolts deliver consistent clamping across a wider bearing surface, reducing the need for separate washers and cutting install time. Engineered for automotive, machinery, and general construction, they help fight loosening from vibration while protecting the work surface.
If you want extra bite or a specialized fit, explore our Hex Flange Bolt Serrated for anti-slip grip and our Hex Flange Bolt Thread Forming for creating threads in untapped holes.
JISB 1189 Hex Flange Bolts
Our JISB 1189 hex flange bolts follow the Japanese Industrial Standard for an integrated washer under the head. That larger bearing surface helps distribute clamping force, making them a favorite in automotive and equipment assemblies where consistency matters. Expect smooth seating, reliable alignment, and fewer loose parts in your bin.
DIN 6921 Hex Flange Bolts
Our DIN 6921 bolts feature a hex head with an integrated flange to spread load over a wider area. Available in both serrated and non-serrated styles, they’re ideal when you need secure fastening with fast cycle times. Pick serrated for higher resistance to rotation under vibration, or non-serrated when the mating surface needs to stay pristine.
Standard Hex Flange Bolt
Our standard hex flange bolt delivers the everyday workhorse performance you need: washer-like flange under the head, greater load-bearing area, and reliable seating. It’s a versatile choice for automotive, industrial, and construction uses where quick, secure installation is essential. Multiple sizes and finishes make it easy to match your exact spec.
Pair your hex flange bolts with the right companion hardware and thread treatment, and you have a complete, confidence-inspiring fastening solution.
FAQs
What are hex flange bolts used for?
They’re used to create strong, stable joints in applications where vibration or dynamic loads are present. The built-in flange spreads the load to reduce surface damage and often eliminates the need for a separate washer, making them popular in automotive frames, engines, machinery, and structural fixtures.
How do you install a hex flange bolt?
Seat the flange face flush against the mating surface, align the components, and tighten using a correctly sized hex socket or wrench while holding the nut (if used). Follow the recommended torque for your size and grade; for serrated versions, install against a clean, dry surface so the serrations can grip and resist loosening.
What does a hex flange bolt look like?
It has a standard hexagonal head with a circular, washer-like flange formed under the head. On serrated types, you’ll see fine radial teeth beneath the flange; on non-serrated types, the flange surface is smooth. The shank is threaded to the specified length and grade to match your application.