OSG Extension Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
SKU 3G-OTH-310953
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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 7/16"-14 UNC spiral-flute design clears chips upward, making it ideal for blind-hole threading in machining, automotive, and general manufacturing applications.
What are the specifications of the OSG 1298800 extension tap?
The OSG 1298800 is a 7/16"-14 UNC spiral-flute extension tap with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made from high-speed steel and 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. Contact us for pricing and lead time on the 1298800 or other OSG threading tools.
How to select the right OSG extension tap for a job?
Select an OSG extension tap based on thread size, pitch, material, and hole depth. For blind holes, use spiral-flute taps like the 1298800 to evacuate chips. Match the chamfer type (plug, bottoming, or taper) to the hole configuration and required thread class.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
