Osg 2912408 Spiral Flute Tap 6-32 Unc Ticn Hss

Product Description

The OSG 2912408 is a spiral flute tap designed for cutting 6-32 UNC internal threads in a wide range of ferrous materials. Built from vanadium high-speed steel with a TiCN coating, it delivers improved wear resistance and heat tolerance compared to uncoated taps. The modified bottoming chamfer allows threading closer to the bottom of blind holes, making it well-suited for tight-tolerance work. With a 45-degree helix angle, this tap efficiently evacuates chips upward, reducing the risk of chip packing in blind-hole applications. Licensed machinists and toolroom technicians are the primary users of this tap.

The OSG 2912408 is used in production and maintenance machining environments where 6-32 UNC threads are required in blind holes. The TiCN coating and vanadium HSS construction make it appropriate for alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel workpieces. It is suited for CNC machining centers and manual lathes alike, particularly where chip control in deep or semi-deep blind holes is a priority. The 2B class of fit designation targets standard commercial thread tolerances.

Key Features

• TiCN coating provides enhanced hardness and lubricity for extended tool life in ferrous materials
• 45-degree right-hand spiral flute promotes upward chip evacuation in blind-hole applications
• Modified bottoming chamfer allows threading close to the bottom of blind holes
• Vanadium high-speed steel substrate handles elevated cutting temperatures
• H3 thread limit and 2B class of fit ensure standard commercial thread tolerances
• No coolant-through requirement simplifies setup on standard machine tools

Compatibility

Rated for use in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel. Part of OSG Series 290.

Installation Notes

This tap should be installed in a rigid tap holder or floating tap adapter appropriate for the machine tool in use. Ensure the workpiece is securely fixtured and the spindle is aligned to the hole centerline before tapping to prevent tap breakage. Use a cutting fluid or tapping compound compatible with the workpiece material to extend tool life. Follow standard shop safety procedures and power down the machine before changing or inspecting cutting tools.