Expertly engineered for high-efficiency parallel pipe threading, the Guhring BSP / BSPP Spiral Flute Machine Tap range is the definitive industrial choice for cutting threads in enclosed blind holes. Operating on the standard 55° British Whitworth thread profile, these premium parallel pipe taps feature an advanced spiral flute geometry that shears the metal cleanly and pulls long, stringy chips up and out of the workpiece. This chip evacuation completely eliminates the risk of chip nesting, micro-chatter, and catastrophic tool breakage at the bottom of tight recesses. Housed in a premium high-speed steel substrate with specialized surface treatments for optimal cooling, this series ensures perfect pitch compliance and extended tool life when machine tapping structural steels, fluid manifolds, hydraulic block plates, and tough stainless steel components.

HSS APPLICATIONS

• Primary for machine tapping
• Ideal for blind holes 
• Great for cutting new threads
• Suited for use in a variety of ferrous and non-ferrous materials
• Yellow Ring for cutting - Structural steels like mild steel, 250 and 350 plate, Free cutting steels & Unalloyed case hardened steels

HSS TECHNICAL DATA

• Made from High Speed Steel
• Standard  - DIN 5156
• Tolerance - 2B
• Surface - Bright Finish
• Guhring No. 965