Engineered for precise BSPT threading in blind holes, the OSG Spiral Flute Threading Tap delivers reliable, high-accuracy BSPT threads with dependable durability. Crafted from HSS-E cobalt and finished in a Steam Oxide coating, this tap is built to withstand demanding cuts and extended tool life.

• Brand: OSG — a trusted name in precision threading tools.
• Threading type: BSPT (British Standard Pipe Taper) for standard pipe connections.
• Flute design: Spiral flute geometry enhances chip evacuation in blind-hole applications, reducing binding and improving surface finish.
• Material: HSS-E cobalt alloy for superior hardness and heat resistance during tough tapping tasks.
• Coating: Steam Oxide coating provides lubricity, corrosion resistance, and longer edge life.
• Size: 1 x 11 — specified tap size for BSPT threading in blind holes.
• Application: Ideal for tapping BSPT threads in blind holes within steel, cast iron, and other common metal workpieces.

This tap enables clean, accurate BSPT threads with consistent tolerances, even in deeper blind holes. The combination of the cobalt-enhanced HSS and steam-oxide coating minimizes wear and heat buildup, helping maintain thread integrity across production runs. A dependable choice for maintenance, fabrications, and plumbing fittings where durable, precise BSPT threads are essential.