OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
SKU 3G-OTH-313661
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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. The extended shank allows threading in recessed areas, such as engine blocks or hydraulic manifolds, where standard taps cannot reach. It is ideal for maintenance, repair, and production environments.
What are the specifications of the OSG 5/16"-24 UNF extension tap?
This OSG extension tap has a 5/16"-24 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction. The manufacturer part number is 1293301. It is designed for threading in steel, cast iron, and non-ferrous materials.
Where to buy OSG extension taps worldwide?
3G Electric supplies OSG extension taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG tooling and support procurement teams with technical guidance and reliable shipping to any country.
How to select the correct OSG extension tap for a job?
Select an OSG extension tap by matching thread size (e.g., 5/16"-24 UNF), chamfer type (plug for through holes), flute count, and material coating. For deep holes, ensure the shank length exceeds the depth. Consult the tap tolerance (H3 / 2B-3B) to match the required thread class in your workpiece.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
