OSG Extension Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Extension Tap (MPN 1298600) is a 3/8"-16 UNC spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and a 3-flute design, suitable for threading…
SKU 3G-OTH-310978
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The OSG Extension Tap (MPN 1298600) is a 3/8"-16 UNC spiral-flute extension tap with a plug chamfer, made from high-speed steel. It features an H3 / 2B-3B tolerance class and a 3-flute design, suitable for threading applications requiring extended reach.
Frequently Asked Questions
What is the OSG Extension Tap 3/8"-16 UNC 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 and spiral-flute design help evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG Extension Tap 1298600?
This OSG Extension Tap has a 3/8"-16 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, a plug chamfer, and is made of high-speed steel. The manufacturer part number is 1298600. It is designed for threading steel, aluminum, and other common materials.
Where to buy the OSG Extension Tap 3/8"-16 UNC worldwide?
You can source the OSG Extension Tap 3/8"-16 UNC worldwide through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. 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., 3/8"-16 UNC), chamfer type (plug for blind holes), and flute count (3 for spiral-flute) to your material and hole depth. Ensure the tap's H3 tolerance aligns with your required thread class (2B or 3B).
Used in
Common applications for OSGOSG Products
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.
