OSG Extension Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Extension Tap (SKU 54LK87) is a 1/2"-13 UNC spiral-point extension tap, specified as H3 / 2B-3B with a plug chamfer and black oxide high-speed steel construction. It features 3 flutes and is identified by…
SKU 3G-OTH-313610
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Product Description
The OSG Extension Tap (SKU 54LK87) is a 1/2"-13 UNC spiral-point extension tap, specified as H3 / 2B-3B with a plug chamfer and black oxide high-speed steel construction. It features 3 flutes and is identified by manufacturer part number 1299401.
Frequently Asked Questions
What is the OSG Extension Tap 1299401 used for?
The OSG Extension Tap 1299401 is used for threading blind or deep holes in metal parts, particularly where standard taps cannot reach. It is common in automotive, aerospace, and general manufacturing for creating internal UNC threads in steel and alloys.
What are the specifications of the OSG Extension Tap 1299401?
The OSG Extension Tap 1299401 has a 1/2"-13 UNC thread size, H3 / 2B-3B tolerance, 3-flute design, plug chamfer, and is made from black oxide high-speed steel. It is a spiral-point extension tap, MPN 1299401, suitable for through-hole threading.
Where to buy the OSG Extension Tap 1299401 worldwide?
You can source the OSG Extension Tap 1299401 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your operations.
How to select the correct OSG extension tap for a job?
To select the correct OSG extension tap, match the thread size (e.g., 1/2"-13 UNC), tolerance class (H3 for 2B-3B fit), and chamfer type (plug for blind holes). Consider material hardness and tap coating—black oxide HSS suits general steel threading. Consult OSG's technical data for specific applications.
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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.
