Osg 2923408 Spiral Flute Tap 10-24 Unc Ticn Vanadium Hss

Product Description

The OSG 2923408 is a spiral flute tap designed for cutting 10-24 UNC internal threads in demanding materials. Built from vanadium high-speed steel with a TiCN coating, it delivers hardness and lubricity needed for threading alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel. The modified bottoming chamfer allows threading closer to the bottom of blind holes. With a 45-degree helix angle, the spiral flute design pulls chips up and out of the hole during cutting, reducing clog risk and improving thread finish. Licensed machinists, tool and die makers, and maintenance mechanics typically reach for this tap on manual or CNC tapping applications where chip evacuation is critical.

This tap is suited for production and maintenance threading operations across industrial, toolroom, and manufacturing environments. The 10-24 UNC thread form is common in machine screws, electrical enclosures, panel hardware, and light structural assemblies. The modified bottoming chamfer makes it a practical choice when thread engagement near the base of a blind hole is required. Right-hand thread direction matches standard right-hand fastener stock. The TiCN coating extends tool life when working with harder ferrous materials that would quickly wear an uncoated HSS tap.

Key Features

• 10-24 UNC thread form, right-hand direction, H11 thread limit for controlled fit tolerance
• Modified bottoming chamfer for threading close to the bottom of blind holes
• 45-degree helix angle spiral flute evacuates chips upward, reducing packing in blind applications
• Vanadium high-speed steel construction handles alloy steel, stainless steel, cast iron, and hardened steel
• TiCN coating provides increased surface hardness and reduced friction for extended tool life
• 3 flutes with right-hand flute direction; oversize designation supports plating allowance applications

Compatibility

Designed as an OEM-style threading tool for use in standard 10-24 UNC blind and through-hole tapping applications across a range of ferrous materials including alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel.

Installation Notes

Install in a tap holder, tapping head, or rigid CNC spindle appropriate for the machine and workpiece setup. Always ensure the workpiece is securely fixtured and the tap is properly aligned with the drilled hole before beginning the threading cycle. Use cutting fluid appropriate for the workpiece material, particularly when tapping stainless or hardened steel, to reduce heat buildup and extend tap life. Inspect the tap for chipping or wear before each use and replace if the cutting edges show signs of deterioration.