OSG Extension Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer

This OSG extension tap is used for threading blind or deep holes in metalwork, particularly where standard taps cannot reach. It is common in automotive, aerospace, and general manufacturing for creating internal UNC threads with a plug chamfer and three-flute design for chip evacuation.

The OSG Extension Tap MPN 1295401 has a 7/16"-14 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, plug chamfer, and is made of black oxide high-speed steel. It is a spiral-point extension tap designed for through-hole threading in harder materials.

You can source the OSG Extension Tap 7/16"-14 UNC (MPN 1295401) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct threading tool for your application.

To select the correct OSG extension tap, match the thread size (e.g., 7/16"-14 UNC), tolerance class (H3 / 2B-3B), and chamfer type (plug) to your material and hole depth. For deep or blind holes, a spiral-point or extension design aids chip removal. Consult OSG's technical data for material-specific speeds and feeds.