Expertly engineered for high-efficiency deep-hole threading operations in demanding environments, the Guhring Metric TiN Coated Long Series Spiral Flute Tap range is the definitive industrial choice for machine tapping deep, hard-to-reach blind holes. Operating on the standard 60° ISO Metric thread profile, these premium high-speed steel (HSS-E) tools feature an extended shank design that provides the critical reach required to clear obstructions and thread deep pockets without compromising tool rigidity. Each tap is treated with an advanced Titanium Nitride (TiN) coating, delivering high surface hardness and excellent thermal stability to withstand extreme friction during high-speed production cycles. The specialized 40° right-hand spiral flute geometry cleanly shears material and forcefully pulls compact chips up and out of the deep workpiece, completely eliminating the risk of chip packing and catastrophic tool breakage at the bottom of closed holes. This range is structurally optimized to deliver exceptional tool life and perfect pitch compliance across structural steels, mild steel, AS/NZS 3678 250 and 350 grade plate, free-cutting steels, and unalloyed case-hardened steels.

HSS APPLICATIONS

• Primary for machine tapping
• Ideal for blind holes 
• Great for cutting new threads
• Longer in length, Great for hard to reach places
• 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  - Guhring Std.
• Tolerance - ISO2 / 6H
• Surface - TiN Coated
• Guhring No. 5718