Imperial Flanged Hexagon Bolt Thread Forming Screws.

What are Imperial Flanged Hexagon Bolt Thread Forming Screws?

Imperial flanged hexagon bolt thread forming screws are imperial threaded, trilobular, self-threading fasteners that create durable, vibration-resistant internal threads in a host material without the need for pre-tapping. The hex head gives a secure, positive drive with spanners or sockets, while the integral flange increases bearing area to reduce pull-through and protect the joint surface.

How Imperial Flanged Hexagon Bolt Thread Rolling Screws Work

Once driven into a correctly sized pilot hole, the trilobular thread rolling shank displaces, rather than cuts, material to cold-form a matching imperial female thread, avoiding swarf and delivering high strip-out resistance, repeatable prevailing torque and excellent performance under vibration.

The hexagonal head offers flexibility during installation, with compatibility for spanners, nut setters, or power drivers, aiding access in production and maintenance environments. Additionally, acting like a built-in washer, the flange spreads clamping force, which is especially beneficial on softer or thinner substrates like sheet steel.

For example, fastening a polycarbonate machine guard to a powder-coated sheet-steel frame, the lobed profile forms clean threads in the steel, the flange distributes the load to protect the guard, and the hex drive provides consistent, higher installation torque with common tooling.

Materials Imperial Flanged Hex Bolt Thread Rolling Screws Are Made From

Accu's range of imperial flanged hex bolt thread rolling screws is supplied in these materials and finishes to suit function and appearance requirements:

• Steel with Bright Zinc Plating: Clean, bright finish with dependable indoor corrosion protection.

Sizes and Types of Imperial Flanged Hexagon Bolt Thread Forming Screws Available

Our imperial flanged hex bolt thread rolling screw variants cover thread sizes ranging from 6-32 UNC to 1/4-20 UNC with lengths from 1/4 inch to 2 1/2 inches. Every option features a hexagon head with an integral flange and a trilobular, thread-forming shaft for consistent performance in plastics, thin composite materials and light metals such as aluminium, brass and sheet steel.

FAQs

Q: Do I still need a washer with an imperial flanged hex head thread forming screw?

A: Usually not. The flange increases bearing area and often removes the need for a separate washer, improving the load distribution while also reducing installation time.

Q: What tools are best for installation?

A: Use standard hex sockets or nut-setters with torque control. The hex head supports higher, more consistent torque than cross-recess drives, ideal for production lines.

Q: How do these differ from self-tapping screws?

A: Thread-forming types displace material rather than cut it, typically giving better pull-out strength, improved vibration resistance and leaving no swarf in the assembly.

Q: Can the flange mark delicate finishes?

A: Potentially, on sensitive coatings. Validate torque settings, consider a temporary protective film during build and check against your coating specification.

Bespoke Imperial Flanged Hexagon Bolt Thread Forming Screws Manufacture.

High precision, bespoke manufacture of Imperial Flanged Hexagon Bolt Thread Forming Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.