Sutton 3-8 UNF Button Die 1" OD - HSS Pro Series

Sutton Tools is an Australian-owned manufacturer of precision cutting tools and threading accessories, supplying tradespeople, engineers, and manufacturing operations across Australia and internationally. Their product range spans taps, dies, drills, endmills, holesaws, and related tooling — all engineered to perform consistently under real industrial conditions. AIMS Industrial supplies the Sutton Tools range to Australian businesses as part of our commitment to stocking quality, trusted brands.

Sutton UNF (Unified National Fine) taps and dies cut a fine-pitch 60° thread used on precision fastening applications, thin-walled sections, and North American-specification assemblies requiring greater clamping force per turn than UNC.

Where this product is used

Used to cut or restore fine-pitch UNF threads on precision mechanical components and North American-specification equipment.

• Cutting UNF threads in automotive, aerospace, and precision mechanical components where finer pitch improves clamping load or suits thin-walled material.
• Rethreading UNF bolt holes and stud holes on American-designed plant and machinery during maintenance and repair.
• Producing external UNF threads on precision fasteners, adjustment screws, and fittings using UNF dies.

Key specifications

Selecting the right option

UNF is finer than UNC at the same nominal diameter — confirm TPI from the existing fastener or drawing. Select HSS or cobalt grade based on workpiece material.