Osg 1400121905 Thread Forming Tap 10-32 Unf Plug Cobalt Tin

Product Description

The OSG 1400121905 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting or producing chips. This plug-chamfer tap is manufactured from cobalt high-speed steel and finished with a titanium nitride (TiN) coating for extended tool life in demanding applications. At 2.375 inches overall length with a thread limit of H10 and 32 threads per inch, it produces 10-32 UNF right-hand threads. It is suited for production machining environments where clean, strong threads are required in through-hole applications. Licensed machinists and CNC operators are the primary users.

This tap is engineered for through-hole threading operations across a broad range of metallic workpiece materials. Its 4 to 4.5 chamfered threads provide a standard plug chamfer entry suitable for through-holes where the tap can pass completely through the material. A shank diameter of 0.194 inches and square drive size of 0.152 inches make it compatible with standard tap holders and tapping heads used in vertical machining centers, drill presses, and manual tapping fixtures. The H10 thread limit designation suits close-tolerance 10-32 UNF threaded holes commonly found in aerospace, automotive, and precision mechanical assemblies.

Key Features

• Thread forming (chipless) design eliminates chip buildup in blind or through-hole bores
• Cobalt HSS construction provides heat and wear resistance in hard and abrasive materials
• TiN coating reduces friction and extends tool life in high-cycle production runs
• H10 thread limit for consistent close-tolerance 10-32 UNF thread production
• Plug chamfer (4 to 4.5 threads) for efficient entry in through-hole applications
• Right-hand thread direction, compatible with standard tapping spindles and holders

Compatibility

Rated for use in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material application codes P and N indicate suitability for steel and non-ferrous materials respectively. Designed for through-hole threading in standard 10-32 UNF applications.

Installation Notes

Thread forming taps require adequate lubrication or cutting fluid matched to the workpiece material - consult the fluid manufacturer for recommendations by material type. Ensure the tap holder provides proper axial float to prevent thread pitch distortion. Power down or de-energize any CNC spindle and verify machine is in a safe state before tool changes. Do not use this tap in blind holes without confirming sufficient tapping depth clearance, as thread forming taps displace material rather than cut it.