Osg 1410104500 Thread Forming Tap M8x1.25 Cobalt

Product Description

The OSG 1410104500 is a cobalt thread forming tap in the HY-PRO NRT series, designed for M8x1.25 metric coarse threads with a modified bottoming chamfer. Thread forming taps displace material rather than cut it, producing stronger threads with no chips in the hole. This tap carries a bright finish, runs without coolant through the shank, and conforms to a 6H class of fit with a D9 thread limit. It is suited for machinists, tool-and-die makers, and CNC operators working in production or job-shop environments where blind-hole threading is required.

This tap is intended for blind hole threading applications across a range of workpiece materials. The HY-PRO NRT series is rated for use in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. The modified bottoming chamfer, with 2 to 2.5 chamfered threads, allows the tap to thread closer to the bottom of a blind hole than a standard plug or taper chamfer. It is a right-hand tap and is packaged individually.

Key Features

• Thread forming design displaces material, eliminating chips and producing stronger thread form compared to cutting taps
• Modified bottoming chamfer (2 to 2.5P) for threading near the bottom of blind holes
• Cobalt construction for improved heat and wear resistance in harder workpiece materials
• 6H class of fit with D9 thread limit for standard metric tolerance applications
• Compatible with multiple material groups including stainless steel, alloy steel, and aluminum
• Right-hand thread direction, no coolant-through requirement

Compatibility

Designed for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Produces M8x1.25 metric coarse right-hand internal threads conforming to 6H class of fit.

Installation Notes

Thread forming taps require a specific forming tap drill size — do not use a standard cut tap drill diameter, as this will result in incorrect thread form or tool breakage. Power down or lock out any machine tool before loading or unloading the tap from the holder. Apply an appropriate tapping fluid or cutting oil rated for the workpiece material before tapping. Follow shop or facility standards for torque and feed rate when programming CNC equipment.