Specify cobalt (HSS-Co, M35/M42 class) drill bits with a 135° split point. Cobalt holds its edge against the work-hardening and heat build-up that destroys standard HSS in stainless and tool steel. Black oxide or bright HSS remains the most cost-effective choice for mild steel, aluminium, brass and wood.

A Type 1 flat wheel is built for straight cutting with the wheel edge held roughly 90° to the workpiece. A Type 27 depressed-centre wheel is designed for surface grinding and weld blending at a 15°–30° angle. Using one in place of the other overloads the bond, shortens wheel life and creates an avoidable safety risk.

Drill a pilot hole in the broken fastener with a left-hand bit first; the reverse rotation often backs the fastener out on its own. If it stays put, drive a tapered left-hand spiral extractor into the pilot hole — extraction torque tightens the grip as it turns counter-clockwise, so the fastener comes out without damaging the surrounding thread.

Yes. We support industrial distributors, hardware buying groups, automotive aftermarket channels and OEM packaging programs. Catalogue data, packaging formats and product documentation are available through our support pages, and our team can advise on assortment planning by application.

Thread restoring files clean and reform external threads that are bruised or burred, covering several pitches on one tool without taking the fastener out of service. Where thread material is actually missing or stripped, a tap, die or dedicated thread restorer set is the correct repair.