OSG 3/8"-16 UNC Pulley Tap, H3 / 2B-3B, 4 Flute, Plug Chamfer, Black Oxide HSS
The OSG Extension Tap (MPN 1291001) is a 3/8"-16 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets this demand and sources…
SKU 3G-OTH-308214
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The OSG Extension Tap (MPN 1291001) is a 3/8"-16 UNC pulley tap with a H3 / 2B-3B tolerance, 4-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets this demand and sources the genuine OEM tool, supporting your machining operations across 14 industrial departments — with specialist depth in cutting tools and controls.
Frequently Asked Questions
What is the OSG Extension Tap 1291001 used for?
The OSG Extension Tap 1291001 is a pulley tap designed for threading blind holes in pulleys and other hard-to-reach areas. Its extended length allows access to deep or recessed threads. Common applications include automotive, machinery, and general industrial maintenance where UNC threads are required.
What are the specifications of the OSG Extension Tap 1291001?
This OSG tap has a 3/8"-16 UNC thread size with H3 / 2B-3B tolerance class. It features a 4-flute design with plug chamfer and is made from black oxide high-speed steel. The manufacturer part number is 1291001. It is suitable for threading both 2B and 3B class holes.
Where to buy the OSG Extension Tap 1291001 worldwide?
You can source the OSG Extension Tap 1291001 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; we provide competitive pricing and reliable sourcing for this pulley tap.
How to select the correct OSG extension tap for a threading job?
To select the correct OSG extension tap, match the thread size (e.g., 3/8"-16 UNC) and tolerance class (H3 / 2B-3B) to your hole requirements. Consider the material being threaded—high-speed steel works for most metals. Ensure the tap length reaches the thread depth. For blind holes, a plug chamfer is standard.
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3G Electric supplies OSG pulley taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
