OSG Extension Tap: 1/2"-13 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer
The OSG Extension Tap (MPN 1292201) is a 1/2"-13 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. This tool is designed for threading…
SKU 3G-OTH-308206
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Product Description
The OSG Extension Tap (MPN 1292201) is a 1/2"-13 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. This tool is designed for threading applications requiring extended reach.
Frequently Asked Questions
What is an OSG extension tap used for?
An OSG extension tap is used to cut internal threads in hard-to-reach or deep-hole applications. It is commonly employed in automotive, aerospace, and general manufacturing for threading blind or through holes where standard taps cannot reach. The extended shank provides clearance for obstructions.
What are the specifications of the OSG extension tap 1/2-13 UNC?
This OSG extension tap has a 1/2-13 UNC thread size, H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is made from black oxide high-speed steel. The manufacturer part number is 1292201. It is designed for threading steel and cast iron in production environments.
Where to buy OSG extension taps worldwide?
You can source OSG extension taps 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 on this and other OSG threading tools.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., 1/2-13 UNC), tolerance class (H3 / 2B-3B), and chamfer type (plug) to your material and hole depth. For deep or obstructed holes, choose an extension tap with sufficient reach. Always verify the tap's coating and flute count for the workpiece material.
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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.
