OSG 3/8"-16 UNC Pulley Tap, H3 / 2B-3B, Plug Chamfer, 4 Flute, Black Oxide HSS
The OSG Extension Tap (MPN 1291201) is a 3/8"-16 UNC pulley tap with a black oxide high-speed steel construction, H3 / 2B-3B tolerance, plug chamfer, and 4 flutes.
SKU 3G-OTH-308207
Local availability & support
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The OSG Extension Tap (MPN 1291201) is a 3/8"-16 UNC pulley tap with a black oxide high-speed steel construction, H3 / 2B-3B tolerance, plug chamfer, and 4 flutes.
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 through holes in hard-to-reach areas, such as pulley assemblies and engine blocks. Its extended length allows access where standard taps cannot reach. The plug chamfer and 4-flute design help start threads easily and clear chips efficiently.
What are the specifications of the OSG Extension Tap 1291201?
This OSG extension tap has a 3/8"-16 UNC thread size with an H3 / 2B-3B tolerance class. It features 4 flutes, a plug chamfer, and is made from black oxide high-speed steel. The manufacturer part number is 1291201, and it is classified as a pulley tap.
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. We handle full logistics, customs clearance, and delivery to global destinations. Contact us for availability and lead time; we supply genuine OSG taps for industrial threading applications.
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. Choose a plug chamfer for blind holes or a taper chamfer for through holes. Ensure the tap length provides adequate reach for your workpiece.
Used in
Common applications for OSGOSG Products
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.
