OSG Extension Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Plug Chamfer
The OSG Extension Tap (#4-40 UNC, MPN 1296000) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H2 / 2B-3B. 3G Electric sources this genuine OSG tool…
SKU 3G-OTH-310985
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Product Description
The OSG Extension Tap (#4-40 UNC, MPN 1296000) is a spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features 2 flutes and is rated H2 / 2B-3B. 3G Electric sources this genuine OSG tool across 14 industrial departments, with specialist expertise in cutting tools and precision threading.
Frequently Asked Questions
What is the OSG #4-40 UNC extension tap used for?
The OSG #4-40 UNC extension tap is used for threading blind holes in hard-to-reach areas of metal components. Its 2-flute spiral-flute design evacuates chips upward, making it ideal for automotive, aerospace, and general machining applications where extended reach is required.
What are the specifications of the OSG 1296000 extension tap?
The OSG 1296000 is a #4-40 UNC extension tap with H2 / 2B-3B thread class, plug chamfer, 2 flutes, and high-speed steel construction. It is designed for threading blind holes and is part of OSG's spiral-flute extension tap series.
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 1296000 or other OSG tooling.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., #4-40 UNC), chamfer type (plug for blind holes), flute count (2 for chip evacuation), and material (high-speed steel for general use). Ensure the H2 / 2B-3B tolerance fits your required thread class. Consult OSG's technical data for specific applications.
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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.
