Osg 1232001 Spiral Point Tap 7/16-14 Unc 3 Flute Hss

Product Description

The OSG 1232001 is a spiral point plug tap designed for threading 7/16-14 UNC holes in a wide range of metallic materials. It is manufactured from high-speed steel with a steam oxide coating that reduces friction and helps resist corrosion during cutting. The plug chamfer on the lead threads makes it well suited for through-hole tapping operations where the tap can pass fully through the workpiece. With 3 flutes and a right-hand thread direction, the 1232001 drives chips forward and out of the hole, maintaining clean thread formation. It carries a thread limit of H3, indicating a standard tolerance class appropriate for general-purpose UNC fastener applications.

This tap is used in machine shop, maintenance, and field service environments where 7/16-14 UNC threads must be cut or restored. It is appropriate for use in drill presses, CNC machining centers, and tapping machines. The steam oxide finish makes it a solid choice across a broad range of ferrous and non-ferrous workpiece materials. It is sold individually and suits both production and low-volume repair work.

Key Features

• 7/16-14 UNC thread form with right-hand cutting direction
• 3-flute spiral point design pushes chips forward through the workpiece
• Plug chamfer optimized for through-hole tapping applications
• High-speed steel construction handles a broad range of workpiece materials
• Steam oxide coating reduces friction and provides corrosion resistance
• H3 thread limit for standard general-purpose UNC tolerance fits

Compatibility

Rated for use in aluminum, cast aluminum, cast iron, hardened steel, high-carbon steel, low-carbon steel, and medium-carbon steel. Compatible with standard 7/16-14 UNC tapping chucks and holders sized for a 0.323-inch shank diameter.

Installation Notes

Spiral point taps are installed by qualified machinists or maintenance technicians using a tapping machine, drill press, or CNC machine with a synchronized tapping head. Ensure the workpiece is properly fixtured and that the correct tap drill size for 7/16-14 UNC is used before tapping. Apply an appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Inspect the tap for wear or chipping before each use and replace if cutting edges are damaged.