Osg 1400123308 Thread Forming Tap 12-24 Unc Plug Cobalt Ticn

Product Description

The OSG 1400123308 is a thread forming tap designed for right-hand, through-hole threading in a wide range of metallic workpiece materials. Part of the HY-PRO NRT series, it cuts a 12-24 UNC thread profile using a plug chamfer with 4 to 4.5 chamfered threads, allowing for gradual thread engagement at the start of the hole. The tap is manufactured from cobalt high-speed steel and carries a TiCN coating for improved wear resistance and surface hardness. The H6 thread limit keeps the finished thread within a tight tolerance band, making it suitable for close-tolerance fastener assemblies. Licensed machinists and tool and die tradespeople are the primary users of this tap.

This tap is suited for through-hole threading operations on alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The plug chamfer style makes it the standard choice when the tap can pass fully through the workpiece. It is appropriate for both production and maintenance machining environments where a consistent 12-24 UNC internal thread is required. The 0.933-inch tapping depth and 0.496-inch thread length support shallow to moderate threading applications on machined parts and fabricated assemblies.

Key Features

• 12-24 UNC thread profile, right-hand direction, H6 thread limit for close-tolerance results
• Plug chamfer with 4 to 4.5 chamfered threads for smooth entry in through-hole applications
• Cobalt high-speed steel construction provides heat and wear resistance in tough alloys
• TiCN coating extends tool life and reduces friction during forming operations
• HY-PRO NRT series design optimized for thread forming rather than cutting, reducing chip generation
• Compatible with a broad material range including stainless steel, hardened steel, and aluminum

Compatibility

Rated for use in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Designed for through-hole threading applications requiring a 12-24 UNC internal thread with an H6 thread limit.

Installation Notes

This tap should be installed in a compatible tap holder or CNC toolholder sized to the 0.220-inch shank diameter and 0.165-inch square drive. Secure the workpiece and ensure the pilot hole diameter is correctly sized for a thread forming tap before starting. Apply an appropriate tapping fluid or cutting oil for the workpiece material, particularly when working with stainless or hardened steel. Coolant-through is not supported on this tap, so external lubrication is required.