Precision BSP threading for blind holes, engineered for professional machinists and shops, the OSG BSP Spiral Flute Threading Tap delivers accurate threads with lasting durability. Built from HSS-E with a Steam Oxide finish, it handles demanding tapping tasks with confidence.

• Material: HSS-E (high-speed steel with cobalt) for superior hardness and heat resistance
• Coating: Steam Oxide finish to enhance wear resistance and lubricity in tough cutting conditions
• Flute Geometry: Spiral flute design optimizes chip evacuation in blind-hole tapping, reducing snagging
• Thread Type: BSP (British Standard Pipe) threading specifically aligned for reliable BSP taps in blind holes
• Size: 1 x 11, suitable for a range of BSP thread sizes in compact workpieces

With this tap, you gain cleaner thread surfaces, reduced rework, and longer tool life thanks to the cobalt-enhanced steel and protective oxide coating. The efficient chip flow minimizes heat buildup and withdrawal friction, delivering consistent thread quality even in deeper blind holes. Ideal for precision automotive, plumbing, and hydraulic components where BSP threads must meet tight tolerances.