Osg 1400123000 Thread Forming Tap 12-24 Unc Plug Cobalt

Product Description

The OSG 1400123000 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting or producing chips. Built from cobalt high-speed steel with a bright finish, this plug-chamfer tap produces 12-24 UNC right-hand threads and carries an H3 thread limit for consistent tolerance control. At 2.375 inches overall length with a 0.493-inch thread length, it fits standard tap holders and CNC rigid tapping setups. It is installed by machinists and tooling technicians working in production or maintenance environments requiring clean, strong formed threads in through-hole applications.

This tap is suited for through-hole threading operations across a range of metallic workpiece materials. The plug chamfer, with 4 to 4.5 chamfered threads, makes it appropriate for starting in a pre-drilled through hole and threading to near-full depth. Common application environments include precision machining of structural components, fastener holes, and fixture work in both job shop and production settings.

Key Features

• Thread forming design displaces material rather than cutting, producing stronger threads with no chips
• Cobalt construction provides heat and wear resistance for use in alloy steel, stainless steel, hardened steel, aluminum, carbon steel, and die steel
• H3 thread limit ensures consistent fit across production runs
• Plug chamfer with 4 to 4.5 chamfered threads enables easy entry in through-hole applications
• Right-hand thread direction, 24 threads per inch, 12-24 UNC standard
• Bright finish with no coolant-through requirement simplifies tooling setup

Compatibility

Designed for through-hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material application codes P and N apply. Fits standard tap holders sized for a 0.220-inch shank diameter.

Installation Notes

Thread forming taps require a properly sized forming tap drill hole, which differs from a standard cut-tap drill size - consult a forming tap drill chart before use. Ensure the workpiece is securely fixtured and the tap is held in a rigid or synchronous tapping holder to prevent thread distortion. Apply appropriate tapping fluid or lubricant for the workpiece material before starting. Do not use this tap in blind holes unless verified compatible with the tapping depth and available chip relief.