OSG Extension Tap: #8-32 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Extension Tap #8-32 UNC is used for threading blind holes in hard-to-reach areas, such as deep bores or recessed surfaces in metalworking. Its spiral-flute design evacuates chips upward, making it ideal for bottoming chamfer applications in automotive, aerospace, and general manufacturing where precise internal threads are required.

The OSG Extension Tap #8-32 UNC has a thread size of #8-32 UNC with an H3 / 2B-3B tolerance class. It features 3 flutes, a bottoming chamfer, and is made from high-speed steel. The manufacturer part number is 1296900, and it is designed for spiral-flute extension tapping applications.

You can source the OSG Extension Tap #8-32 UNC worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we provide reliable sourcing and supply for this OSG tapping tool.

To select the correct OSG Extension Tap, match the thread size (e.g., #8-32 UNC), chamfer type (bottoming for blind holes), and tolerance class (H3 / 2B-3B) to your application. Consider material hardness and hole depth; high-speed steel taps suit general-purpose threading. For extension taps, ensure reach length accommodates your workpiece geometry.