OSG Thread Forming Tap: 1/4"-28 UNF, H2 / 2B-3B, Modified Bottoming Chamfer

This OSG thread forming tap is used to create internal threads in ductile materials such as aluminum, brass, and low-carbon steel. It is ideal for applications requiring strong, chip-free threads in automotive, aerospace, and general manufacturing. The modified bottoming chamfer allows threading close to the bottom of blind holes.

This tap has a thread size of 1/4"-28 UNF, with a H2 / 2B-3B tolerance class. It features a modified bottoming chamfer and a black oxide cobalt finish for heat resistance and lubricity. The manufacturer part number is 1400128201. It is designed for general purpose thread forming in ferrous and non-ferrous materials.

You can source the OSG Thread Forming Tap 1/4"-28 UNF (MPN 1400128201) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine OSG tooling for manufacturing operations.

Select based on thread size, pitch, and material. For 1/4"-28 UNF threads in materials like aluminum or steel, this OSG tap with H2 / 2B-3B tolerance and modified bottoming chamfer is suitable. Ensure the tap drill size matches the forming tap requirements. For blind holes, use a bottoming chamfer; for through holes, a plug chamfer works.