OSG Extension Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
The OSG Extension Tap (#10-24 UNC, MPN 1297300) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features 3 flutes and an H3 / 2B-3B tolerance class, designed for threading…
SKU 3G-OTH-310977
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Product Description
The OSG Extension Tap (#10-24 UNC, MPN 1297300) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features 3 flutes and an H3 / 2B-3B tolerance class, designed for threading applications requiring extended reach.
Frequently Asked Questions
What is the OSG #10-24 UNC extension tap used for?
The OSG #10-24 UNC extension tap is used for threading blind holes in hard-to-reach areas of metal components. Its bottoming chamfer and 3-flute spiral-flute design efficiently evacuate chips, making it suitable for automotive, aerospace, and general manufacturing applications where precise internal threads are required.
What are the specifications of the OSG extension tap MPN 1297300?
The OSG extension tap MPN 1297300 is a #10-24 UNC tap with H3 / 2B-3B tolerance, bottoming chamfer, 3 flutes, and is made from high-speed steel. It is designed for threading blind holes and is classified as a spiral-flute extension tap for improved chip evacuation in deep or obstructed locations.
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 the OSG #10-24 UNC extension tap MPN 1297300.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., #10-24 UNC), chamfer type (bottoming for blind holes), flute count (3-flute for balance), and material (high-speed steel for general use). Ensure the H3 / 2B-3B tolerance fits your required thread class. Consult OSG's technical data for specific workpiece materials.
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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.















