Achieve precise blind-hole threading with the OSG BSW Spiral Flute Threading Tap. Built for machinists and precision shops, it delivers accurate, durable threads in challenging materials.

• Thread type: BSW (British Standard Whitworth) internal thread, 3/8" major diameter with 16 TPI for standard fastener compatibility.
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance under demanding cutting conditions.
• Coating: Steam Oxide coating to reduce friction, improve wear resistance, and extend tool life in tough metals.
• Flute design: Spiral flute geometry engineered for efficient chip evacuation in blind-hole work, minimizing clogging and sticking.
• Application: Optimized for blind-hole tapping in steel and alloy workpieces, suitable for both CNC and manual tapping workflows.
• Size: 3/8" diameter, 16 TPI (BSW), right-hand thread to match standard fasteners.
• Precision: Ground thread form ensures clean, accurate threads with consistent performance across production runs.

This tap is designed to handle the heat and wear of real-world machining without compromising thread integrity. The combination of cobalt-enhanced HSS-E and steam-oxide coating helps maintain cutting efficiency, extend tool life, and produce reliable, clamp-ready threads in blind holes. Ideal for maintenance, repair, or new-build projects where precise 3/8-16 BSW threads are required in confined or recessed spaces.