Osg 1400100500 Thread Forming Tap 0-80 Unf Cobalt H5

Product Description

The OSG 1400100500 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting chips. Built from cobalt high-speed steel with a bright finish, it produces 0-80 UNF right-hand threads and carries an H5 thread limit for tight tolerance control. The modified bottoming chamfer with 2 to 2.5 chamfered threads allows threading close to the bottom of blind holes. At 1.6913 inches overall length with a 0.1410-inch shank diameter, this tap is suited for precision small-diameter threading in machining and production environments. Installation is performed by machinists and toolroom technicians.

This tap is engineered for blind hole threading applications across a broad range of workpiece materials. Its cold-forming action displaces material rather than cutting it, resulting in stronger thread forms with improved surface finish. It is appropriate for use in alloy steel, carbon steel, die steel, hardened steel, aluminum, and stainless steel. The HY-PRO NRT series targets production tapping where chip control is a concern and thread strength is critical.

Key Features

• Thread forming (chipless) design produces stronger threads by cold-working the material
• Cobalt construction provides heat and wear resistance in tough alloy and stainless steel applications
• Modified bottoming chamfer with 2 to 2.5 chamfered threads enables threading close to blind hole bottoms
• H5 thread limit ensures consistent tight-tolerance thread production
• Bright finish with no coating for straightforward inspection and general-purpose use
• Right-hand thread direction, 80 threads per inch, 0-80 UNF standard

Compatibility

Designed for blind hole threading in alloy steel, carbon steel, die steel, hardened steel, aluminum, and stainless steel workpieces. Material application codes P and N apply.

Installation Notes

Thread forming taps require proper lubrication and are used in CNC tapping, drill press, or tapping arm setups with controlled feed rate matched to the thread pitch. Ensure the pilot hole diameter is sized specifically for thread forming, as forming taps require a larger pilot hole than cutting taps of the same thread size. Always confirm spindle speed and torque limits are within the tap and machine specifications before operation. Follow shop safety protocols and secure the workpiece before beginning the tapping cycle.