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OSG Extension Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute

SKU 3G-OTH-311700

Brand
OSG
Item
Extension Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652505108
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG Extension Tap 7/8"-14 UNF used for?

This OSG extension tap is designed for threading blind or deep holes in multiple materials. Its spiral-flute design evacuates chips upward, making it ideal for production tapping in steel, stainless steel, and aluminum. The modified bottoming chamfer allows threading close to the hole bottom.

What are the specifications of the OSG Extension Tap 7/8"-14 UNF?

The OSG Extension Tap has a 7/8"-14 UNF thread size, H6 / 2B-3B tolerance, and a 4-flute modified bottoming chamfer. It is a spiral-flute extension tap for multiple materials. The manufacturer part number is 1652505108.

Where to buy the OSG Extension Tap 7/8"-14 UNF worldwide?

You can source the OSG Extension Tap 7/8"-14 UNF from 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.

How to select the correct OSG extension tap for threading?

Select an OSG extension tap based on thread size, pitch, tolerance class, and material. For blind holes, use a spiral-flute tap with a bottoming chamfer. Ensure the tap length matches hole depth. OSG taps are precision-ground for consistent thread quality in production environments.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

3G Electric supplies OSG spiral-flute extension taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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