OSG Extension Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Bottoming Chamfer
The OSG Extension Tap (#4-40 UNC, MPN 1296100) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features a 2-flute design and is rated H2 / 2B-3B for thread class compatibility.
SKU 3G-OTH-310981
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The OSG Extension Tap (#4-40 UNC, MPN 1296100) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features a 2-flute design and is rated H2 / 2B-3B for thread class compatibility.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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. Its 2-flute, bottoming chamfer design allows threading close to the bottom of a hole, while the extended length provides access in deep or obstructed applications. It is suitable for use in steel and other materials requiring precise internal threads.
What are the specifications of the OSG extension tap MPN 1296100?
The OSG extension tap MPN 1296100 is a #4-40 UNC tap with a H2 / 2B-3B thread class. It has 2 flutes, a bottoming chamfer, and is made from high-speed steel. The spiral-flute design aids chip evacuation. This tap is designed for threading blind holes and is part of OSG's spiral-flute extension tap product type.
Where to buy OSG extension taps worldwide?
You can source OSG extension taps, including the #4-40 UNC model MPN 1296100, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact 3G Electric for availability and lead time on this OSG tap.
How to select the correct OSG extension tap for a threading application?
To select the correct OSG extension tap, match the thread size (e.g., #4-40 UNC) and thread class (e.g., H2 / 2B-3B) to your hole requirements. Choose a bottoming chamfer for blind holes and a spiral-flute design for chip evacuation. Ensure the tap length provides sufficient reach. OSG taps are precision-ground from high-speed steel for durability.
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.
