Engineered for high-productivity through hole thread production in high-tensile alloys and tough materials, this collection of Guhring UNF spiral point gun taps with a distinct gold ring identifier features a premium steam tempered finish. The specialized steam tempering surface treatment increases oxide layer adhesion, improving lubricant retention and effectively preventing cold welding or premature chip loading when working under heavy thermal stress. The advanced geometric design incorporates a targeted spiral point that forces swarf forward out of the pre-drilled hole, eliminating chip bird-nesting and protecting delicate thread forms. Manufactured from premium high-speed cobalt steel (HSSE), these machine production taps are optimized for demanding engineering projects. For industrial fabrication shops and structural manufacturers across Australia, this gold ring range resolves critical mechanical troubleshooting bottlenecks—such as unexpected tap snapping, thread stripping, and surface galling—when tapping tough structural steels, including Australian AS/NZS 1594 hot-rolled coil and AS/NZS 3678 grade 250 or grade 350 structural plate.

HSS APPLICATIONS

• Primary for machine tapping
• Ideal for through holes as the tap pushes the swarf forwards
• Great for cutting new threads
• Suited for use in a variety of ferrous and non-ferrous materials
• Gold Ring for cutting - Structural steels - mild steel, 250 and 350 plate, Free cutting steels, Case hardened steels, Heat treatable steels, Nitriding steels, Spheroidal graphite cast iron

HSS TECHNICAL DATA

• Made from High Speed Steel
• Standard  - DIN 374
• Tolerance - 2B
• Surface - Steam Tempered
• Guhring No. 5727