Osg 1625034107 Thread Forming Tap 3/4-10 Unc Cobalt Ticn

Product Description

The OSG 1625034107 is a thread forming tap in the EXOPRO XPF Series 16250, designed for cold-forming internal threads without cutting chips. Sized for 3/4-10 UNC at a 3B class of fit with an H7 thread limit, it produces accurate, strong threads by displacing material rather than removing it. The cobalt substrate with TiCN coating provides heat resistance and surface hardness for demanding applications. Overall length is 4.921 inches with a 1.0 inch thread length and a modified bottoming chamfer of 2.5 to 3 threads. Licensed HVAC, plumbing, and mechanical trade professionals and precision machinists specify this tap for high-cycle production and maintenance work.

The OSG 1625034107 is rated for use in blind hole and through-hole threading across a wide range of materials including aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, hardened steel, high-nickel alloy, and titanium. Its material application codes cover P, M, N, and H workpiece categories, making it appropriate for both ferrous and non-ferrous production environments. The modified bottoming chamfer allows threading close to the bottom of blind holes where clearance is limited.

Key Features

• 3/4-10 UNC thread size with 3B class of fit and H7 thread limit for consistent tolerance control
• Modified bottoming chamfer (2.5 to 3 threads) for threading near the bottom of blind holes
• Cobalt substrate with TiCN coating for extended tool life in abrasive and high-hardness materials
• Thread forming (chipless) design eliminates chip evacuation concerns in blind hole applications
• Compatible with aluminum, stainless steel, titanium, high-nickel alloy, and multiple steel grades
• Right-hand thread direction with a 0.590 inch shank diameter for standard tap holder fitment

Compatibility

Designed as an OEM-style replacement or direct tooling selection for machines and tap holders accepting a 0.590 inch shank diameter; rated for blind hole and through-hole threading in materials with OSG material application codes P, M, N, and H as specified in Series 16250 EXOPRO XPF tooling documentation.

Installation Notes

Installation is performed by qualified machinists or trade professionals using a calibrated tapping head, CNC machine, or manual tap wrench rated for the torque demands of 3/4-10 thread forming in the target material. Secure the workpiece and confirm correct pilot hole diameter for thread forming before starting, as forming taps require a larger pilot hole than cutting taps of the same size. Apply appropriate tapping fluid or cutting oil for the workpiece material to reduce friction and extend tool life. Do not reverse the tap under power without verifying the machine is set for proper reverse torque.