Osg 1760001 Spiral Point Tap 8-32 Unc Plug 3 Flute

Product Description

The OSG 1760001 is a spiral point plug tap designed for threading 8-32 UNC holes in demanding materials. Built from powdered metal and finished with a steam oxide coating, this tap handles hard-to-machine workpieces where standard high-speed steel tools fall short. The plug chamfer distributes cutting load across multiple leading threads, making it well-suited for through-hole tapping operations. Three flutes provide efficient chip evacuation forward through the hole. Overall length is 2.126 inches, with a thread length of 0.381 inches and a shank diameter of 0.168 inches. The right-hand H5 thread limit delivers consistent fit for standard UNC fastener applications.

This tap is rated for use in hardened steel, stainless steel, high-nickel alloy, titanium, alloy steel, and die steel. It is a strong fit for machining, tool-and-die, and maintenance repair operations where 8-32 UNC threads are required in tough base materials. The plug style makes it the standard choice when tapping through-holes on the manual mill, CNC machining center, or drill press. It is sold individually and intended for professional shop use.

Key Features

• Spiral point geometry pushes chips forward, keeping flutes clear in through-hole applications
• Powdered metal construction increases wear resistance over standard HSS in hard and abrasive materials
• Steam oxide coating reduces friction and provides light corrosion resistance during storage and use
• Plug chamfer (7-10 threads) distributes cutting load and eases entry into the hole
• H5 thread limit ensures consistent UNC thread tolerance for standard fastener fit
• Right-hand cut, no coolant-through requirement — compatible with flood, mist, or manual lubrication

Compatibility

Designed for tapping 8-32 UNC threads in hardened steel, stainless steel, high-nickel alloy, titanium, alloy steel, and die steel workpieces. Suitable for use in CNC machining centers, manual mills, and drill press setups running right-hand tapping cycles.

Installation Notes

This tap is installed and operated by machinists and tool-and-die professionals. Ensure the workpiece is securely clamped and the tap is properly aligned to the drilled pilot hole before beginning the tapping cycle. Use an appropriate tapping fluid or cutting oil rated for the workpiece material to extend tool life and maintain thread quality. Inspect the tap for chipping or wear between operations, particularly when working with hardened or high-alloy materials.