OSG Extension Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Extension Tap (5/16"-24 UNF, MPN 1295701) is a spiral-point extension tap with a plug chamfer, made from black oxide high speed steel. It features 3 flutes and is rated H3 / 2B-3B for thread tolerance.
SKU 3G-OTH-313664
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Product Description
The OSG Extension Tap (5/16"-24 UNF, MPN 1295701) is a spiral-point extension tap with a plug chamfer, made from black oxide high speed steel. It features 3 flutes and is rated H3 / 2B-3B for thread tolerance.
Frequently Asked Questions
What is the OSG Extension Tap 5/16-24 UNF used for?
The OSG Extension Tap is used for threading blind or deep holes in metal parts where standard taps cannot reach. Its extended length allows access to recessed areas in automotive, aerospace, and general machining applications. The 5/16-24 UNF size creates unified fine threads in materials like steel and aluminum.
What are the specifications of the OSG Extension Tap 5/16-24 UNF?
This OSG tap has a 5/16-24 UNF thread size with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made from black oxide high-speed steel. The manufacturer part number is 1295701. It is designed for threading blind holes where extension is needed.
Where to buy the OSG Extension Tap 5/16-24 UNF worldwide?
You can source the OSG Extension Tap 5/16-24 UNF (MPN 1295701) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., 5/16-24 UNF), tolerance class (H3 / 2B-3B), and chamfer type (plug) to your hole depth and material. Ensure the tap length provides sufficient reach. For blind holes, use a plug or bottoming chamfer. Consult OSG's technical data for material-specific speeds.
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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.
