Osg 1739808 Spiral Point Tap 6-32 Unc Ticn Vanadium Hss

Product Description

The OSG 1739808 is a spiral point tap designed for cutting 6-32 UNC internal threads in ferrous and stainless steel workpieces. Manufactured from Vanadium High Speed Steel (HSS-E) and finished with a Titanium Carbonitride (TiCN) coating, this tap delivers extended tool life in demanding tapping applications. It features a plug chamfer with 3 flutes, a right-hand thread direction, and an H3 thread limit for a Class 2B fit. The overall length is 2 inches with a thread length of 0.6875 inches (11/16 inches). Licensed machinists, tool-and-die makers, and production line operators are the primary users of this tool.

This tap is suited for threading operations in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel. The spiral point geometry pushes chips forward ahead of the cutting edge, making it well suited for through-hole tapping on CNC machining centers, drill presses, and tapping arms in production or job shop environments. The TiCN coating reduces friction and heat buildup, extending service intervals when cutting tougher alloys at higher feed rates.

Key Features

• 6-32 UNC thread form with H3 thread limit for Class 2B fit tolerance
• Vanadium High Speed Steel (HSS-E) construction for improved wear resistance over standard HSS
• TiCN coating reduces heat and friction during cutting, extending tool life in steel applications
• Plug chamfer (approx. 3-5 thread lead-in) for progressive thread engagement
• Spiral point geometry pushes chips forward — optimized for through-hole tapping
• Right-hand cut, 3-flute design compatible with standard tapping chucks and holders

Compatibility

Designed for through-hole tapping in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel. Compatible with standard tapping holders sized for a 0.141 inch shank diameter.

Installation Notes

This tap is installed by machinists or tooling professionals using a standard tapping chuck, floating tap holder, or rigid tapping setup. Ensure the workpiece is securely fixtured and the spindle is properly aligned before engaging the tap to prevent tap breakage. Apply an appropriate cutting fluid or tapping compound rated for the workpiece material, particularly when threading stainless steel. Follow machine manufacturer guidelines for spindle speed and feed rate; do not reverse the tap while under load without confirming the machine is set for synchronized reverse.