Osg 1625016413 Thread Forming Tap 1-64 Unc 2B H3

Product Description

The OSG 1625016413 is a thread forming tap designed for 1-64 UNC threading in blind hole applications. Part of the EXOPRO XPF Series 16250, it is manufactured from cobalt high speed steel with a V-coating finish. The bottoming chamfer with 1.5 to 2 chamfered threads allows threading close to the bottom of a blind hole. At 1.7717 inches overall length with a thread limit of H3 and a 2B class of fit, this tap is suited for precision threading work in demanding materials. Machinists, tool and die makers, and maintenance technicians use this tap in production and repair environments.

This tap is rated for a wide range of material applications including aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium. Its material application codes are P, M, N, and H, covering the full spectrum from non-ferrous metals to difficult-to-machine alloys. The right-hand thread direction and bottoming chamfer make it a practical choice for close-tolerance blind hole threading in both manual and CNC tapping operations.

Key Features

• Bottoming chamfer with 1.5 to 2 chamfered threads for threading to the bottom of blind holes
• Cobalt high speed steel construction with V-coating for extended tool life in hard and abrasive materials
• H3 thread limit for controlled tolerance in 2B class of fit applications
• Compatible with aluminum, stainless steel, titanium, high-nickel alloy, and multiple steel grades
• Right-hand thread direction, Series 16250 EXOPRO XPF design
• No coolant-through requirement, suitable for standard tapping setups

Compatibility

Designed for blind hole threading in aluminum, cast aluminum, hardened steel, carbon steel, alloy steel, die steel, stainless steel, high-nickel alloy, and titanium workpieces requiring a 1-64 UNC thread form at 2B class of fit.

Installation Notes

This tap is installed by machinists or tooling technicians using a standard tap wrench or CNC tapping head rated for the shank diameter of 0.1410 inches. Ensure the workpiece is securely fixtured and the pilot hole diameter is correct for a 1-64 UNC thread form tap before starting. Apply appropriate cutting fluid for the workpiece material to reduce tool wear and improve thread quality. Power down and de-energize any CNC equipment before changing tooling per standard lockout procedures.