OSG Extension Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Extension Tap (1/4"-20 UNC) is a spiral-point extension tap for multiple materials, featuring a H5 / 2B-3B, Plug Chamfer, V Coated Powdered Metal design with 3 flutes (MPN 1653502108). 3G Electric interprets…
SKU 3G-OTH-402450
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Product Description
The OSG Extension Tap (1/4"-20 UNC) is a spiral-point extension tap for multiple materials, featuring a H5 / 2B-3B, Plug Chamfer, V Coated Powdered Metal design with 3 flutes (MPN 1653502108). 3G Electric interprets customer demand and delivers this genuine industrial cutting tool across 14 departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as a trust anchor.
Frequently Asked Questions
What is the OSG extension tap 1/4-20 UNC used for?
The OSG extension tap is designed for threading blind or deep holes in multiple materials. Its extended reach allows access to recessed areas where standard taps cannot reach, making it ideal for automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG extension tap 1/4-20 UNC?
This OSG tap has a 1/4-20 UNC thread size, H5 tolerance for 2B-3B class fit, 3 flutes, plug chamfer, and a V-coated powdered metal construction. The manufacturer part number is 1653502108. It is designed for threading multiple materials with extended reach.
Where to buy OSG extension tap 1/4-20 UNC worldwide?
3G Electric supplies the OSG extension tap 1/4-20 UNC worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this item.
How to select the correct OSG extension tap for threading?
Select the OSG extension tap based on thread size (e.g., 1/4-20 UNC), material type, and hole depth. For blind holes, use a plug chamfer. The V-coated powdered metal construction provides wear resistance. Ensure the tap's tolerance (H5) matches your required thread class (2B-3B).
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point extension taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















