OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute

The OSG Extension Tap 1768701 is designed for threading blind holes in steel and stainless steel. Its spiral-flute design evacuates chips upward, preventing clogging, while the extended length allows access to deep or recessed areas. It is commonly used in automotive, aerospace, and general manufacturing applications.

This OSG tap has a thread size of 3/8"-16 UNC with an H3 / 2B-3B tolerance class. It features 3 flutes and a modified bottoming chamfer for threading close to the bottom of blind holes. The spiral-flute design is optimized for steel and stainless steel. Manufacturer part number is 1768701.

You can source the OSG Extension Tap 1768701 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 cutting tools to procurement teams globally.

Select an OSG extension tap based on thread size, pitch, and material. For steel and stainless steel, choose a spiral-flute design like the 1768701 to manage chip evacuation in blind holes. Verify the thread class (e.g., H3 / 2B-3B) matches your tolerance requirements. Always match the tap to the hole depth and machine capability.