OSG Extension Tap: 5/8"-11 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer
The OSG Extension Tap (MPN 1293401) is a 5/8"-11 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets this demand and sources…
SKU 3G-OTH-308211
Need installation or engineering help?
Ask a question
Product Description
The OSG Extension Tap (MPN 1293401) is a 5/8"-11 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets this demand and sources the genuine OSG tool, supporting your threading operations across 14 industrial departments — with specialist depth in combustion, pumps, and controls as a trust anchor.
Frequently Asked Questions
What is the OSG Extension Tap 5/8"-11 UNC used for?
The OSG Extension Tap is used for threading blind or deep holes in industrial applications such as automotive, aerospace, and general manufacturing. Its extended reach allows threading in hard-to-access areas, and the plug chamfer design helps start threads in through or blind holes.
What are the specifications of the OSG Extension Tap MPN 1293401?
The OSG Extension Tap has a thread size of 5/8"-11 UNC, with an H3 / 2B-3B tolerance class. It features 4 flutes, a plug chamfer, and is made from black oxide high-speed steel. This combination provides good wear resistance and chip evacuation for threading steel and other materials.
Where to buy the OSG Extension Tap 5/8"-11 UNC worldwide?
You can source the OSG Extension Tap MPN 1293401 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.
How to select the correct OSG Extension Tap for threading?
Select the OSG Extension Tap based on thread size (e.g., 5/8"-11 UNC), tolerance class (H3 / 2B-3B), and material. For deep or blind holes, choose an extension tap with a plug chamfer and sufficient flute length. Always match the tap to the workpiece material and required thread fit.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG pulley taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















