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Frequently Asked Questions
What is an OSG extension tap used for?
An OSG extension tap is used to cut internal threads in deep or hard-to-reach holes, such as in engine blocks or hydraulic manifolds. The extended shank allows access where standard taps cannot reach, making it essential for maintenance and production in machining, automotive, and industrial equipment repair.
What are the specifications of the OSG extension tap 1/2"-13 UNC?
This OSG extension tap has a 1/2"-13 UNC thread, H3 / 2B-3B tolerance, 4 flutes, plug chamfer, and is made from black oxide high-speed steel. The MPN is 1292601. It is designed for threading through holes and blind holes in ferrous materials up to 850 °C hardness.
Where to buy OSG extension taps worldwide?
3G Electric supplies OSG extension taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine OSG taps like the 1/2"-13 UNC model (MPN 1292601) and deliver to any international destination. Contact us for lead time and pricing.
How to select the right OSG extension tap for a job?
Select an OSG extension tap based on thread size (e.g., 1/2"-13 UNC), material hardness, and hole depth. For blind holes, use a plug chamfer; for through holes, a bottoming chamfer. Match the H limit (e.g., H3) to the required thread class (2B or 3B). Always verify shank length clears the workpiece.
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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.
