Osg 1105610708 Spiral Point Tap 8-32 Unc Ticn

Product Description

The OSG 1105610708 is a spiral point plug tap designed for threading 8-32 UNC holes in demanding materials. Built from powdered metal and coated with TiCN, it handles hardened steel, stainless steel, high-nickel alloys, titanium, and alloy steel without the rapid wear typical of standard HSS taps. With 3 flutes and a plug chamfer, it pushes chips forward ahead of the cutting action, making it well suited for through-hole tapping operations. The H2 thread limit holds tight tolerances for 3B class of fit applications. Licensed machinists, toolmakers, and maintenance technicians commonly use this tap on manual machines and CNC machining centers.

This tap is intended for production and precision threading in ferrous and high-strength materials across industrial, aerospace, and general machining environments. It threads 8-32 UNC right-hand through holes where chip evacuation is critical and tool life in tough materials is a priority. The Series 312TI designation marks it as part of OSG's TiCN-coated powdered metal spiral point line, built for applications where standard coatings fall short.

Key Features

• TiCN coating increases surface hardness and lubricity for extended tool life in difficult materials
• Powdered metal construction provides superior wear resistance compared to standard M2 HSS
• Spiral point geometry pushes chips forward, keeping flutes clear in through-hole applications
• Plug chamfer with 3-5 lead threads allows gradual thread engagement
• H2 thread limit ensures accurate 3B class of fit tolerances
• Right-hand cut, non-coolant-through design compatible with standard tapping fluids

Compatibility

Designed for tapping 8-32 UNC through holes in hardened steel, stainless steel, high-nickel alloy, titanium, and alloy steel workpieces. Compatible with standard 0.168 inch shank tap holders and collet chucks.

Installation Notes

Tapping should be performed by a qualified machinist following proper speeds and feeds for the workpiece material. Always use an appropriate tapping fluid or cutting oil matched to the material being threaded. Secure the workpiece fully before operation and verify spindle alignment to avoid tap breakage. Do not reverse direction until the tap has completed its cut cycle in CNC applications.