Osg 1405003608 Thread Forming Tap 6-32 Unc Modified Bottoming

Product Description

The OSG 1405003608 is a thread forming tap in 6-32 UNC designed for cold-forming internal threads without cutting, which eliminates chips and produces stronger thread forms. Built from powdered metal high-speed steel and finished with a TiCN coating, it delivers extended tool life in demanding production environments. The modified bottoming chamfer with 2 to 2.5 chamfered threads allows threading close to the bottom of a blind hole. Overall length is 2 inches with a thread limit of H3 and a right-hand thread direction. It is sized for use with standard tapping drivers and holders compatible with a 0.141-inch shank diameter. Licensed machinists and maintenance technicians working in metal fabrication, HVAC equipment manufacturing, and related trades will find this tap suited to precision blind-hole applications.

This tap is engineered for blind hole threading in a broad range of metallic materials including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. Its cold-forming action is especially well suited to high-volume production threading where chip control is a priority and thread strength is critical. The EXOTAP VP-NRT series designation indicates compatibility with OSG's high-performance tapping line designed for through-spindle and flood coolant applications, though this tap does not feature internal coolant delivery. It is a practical choice for job shops, assembly lines, and field maintenance operations requiring consistent 6-32 UNC thread quality.

Key Features

• Thread forming design eliminates chips, reducing tap breakage risk in blind holes
• TiCN coating increases surface hardness and reduces friction for longer service life
• Powdered metal high-speed steel substrate provides superior wear resistance over conventional HSS
• Modified bottoming chamfer (2 to 2.5 chamfered threads) enables threading close to hole bottom
• H3 thread limit provides appropriate tolerance for Class 3B fit requirements
• Right-hand thread direction, compatible with standard tapping equipment

Compatibility

Designed for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Suitable for use with standard tap holders and drivers accepting a 0.141-inch shank diameter in 6-32 UNC applications.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with tapping procedures and machine setup. Power down and de-energize any tapping machine or CNC spindle before changing or inspecting tooling. Use appropriate cutting fluid or tapping compound recommended for the workpiece material to maximize tool life, even though this tap does not require through-coolant. Verify correct pilot hole diameter for thread forming before use, as cold-forming taps require a different pilot hole size than cutting taps for the same thread size.