Osg 1400102801 Thread Forming Tap 2-56 Unc Cobalt

Product Description

The OSG 1400102801 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting or producing chips. Sized for 2-56 UNC thread profiles, this tap uses a modified bottoming chamfer with 2 to 2.5 chamfered threads, allowing it to reach near the bottom of blind holes. The tool is manufactured from cobalt and finished with a steam oxide coating to reduce friction and improve wear resistance. Overall length is 1.75 inches with a thread length of 0.437 inches. Licensed trade professionals and machining shops use this tap for precision threading in production and maintenance applications.

This tap is engineered for blind hole threading across a wide range of metallic workpiece materials, including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. The right-hand thread direction and H5 thread limit make it suited to applications where close tolerance fits are required. Typical use cases include threading small-diameter fastener holes in machined components, fixtures, and assemblies where chip-free forming is preferred over conventional cutting taps.

Key Features

• Thread forming design produces no chips, reducing clearing requirements in blind holes
• Modified bottoming chamfer with 2 to 2.5 chamfered threads for near-bottom reach
• Cobalt construction provides heat and wear resistance in ferrous and non-ferrous materials
• Steam oxide coating reduces friction and extends tool life
• H5 thread limit for close-tolerance 2-56 UNC internal threads
• Right-hand thread direction, compatible with standard tapping chucks and CNC spindles

Compatibility

Designed for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring 2-56 UNC right-hand internal threads. Material application codes P and N apply.

Installation Notes

Thread forming taps require a properly sized forming tap drill rather than a standard tap drill, as the displaced material increases minor diameter. Always apply appropriate tapping fluid or cutting oil matched to the workpiece material before use. Power down all equipment and secure the workpiece fully before engaging the tap. Use a calibrated torque-limiting tap holder where possible to avoid tool breakage in small-diameter applications at this size range.