Osg 1410102800 Thread Forming Tap M4x0.70 Metric Coarse

Product Description

The OSG 1410102800 is a thread forming tap designed for cold-forming internal threads without cutting, producing strong, work-hardened threads in ductile materials. Part of the HY-PRO NRT series, it is sized for M4x0.70 Metric Coarse threads and features a plug chamfer with 4 to 4.5 chamfered threads for controlled entry. Manufactured from cobalt high-speed steel with a bright finish, it is built to handle demanding applications including stainless steel, alloy steel, and hardened steel. The right-hand thread direction and 4H class of fit with D4 thread limit ensure precise thread geometry. Machinists and toolroom technicians rely on this tap for through-hole threading operations on production and maintenance work.

This tap is suited for through-hole threading in a range of materials including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. It is appropriate for CNC machining centers, drill presses, and tapping machines where controlled feed rate and rigid or floating tap holders are used. The plug chamfer style makes it a standard choice for through-hole applications where the tap can pass fully through the workpiece for clean thread completion. It is commonly used in precision fabrication, maintenance repair, and production machining environments.

Key Features

• M4x0.70 Metric Coarse thread size with right-hand thread direction
• Plug chamfer with 4 to 4.5 chamfered threads for controlled through-hole entry
• Cobalt high-speed steel construction for heat and wear resistance in tough materials
• Thread forming design cold-works material for stronger, chip-free threads
• 4H class of fit with D4 thread limit for consistent, precise thread geometry
• HY-PRO NRT series rated for alloy steel, stainless steel, aluminum, and hardened steel

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 confirm suitability for steel and non-ferrous material groups.

Installation Notes

Thread forming taps should be installed by machinists or toolroom technicians in rigid or floating tap holders appropriate for the machine being used. Always ensure the workpiece is securely fixtured and the spindle is properly aligned before tapping. Use a tapping fluid or cutting oil rated for the workpiece material to extend tool life and maintain thread quality. Do not use this tap in blind holes without confirming the tapping depth does not exceed the available hole depth.