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OSG Extension Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer - Spiral-Point Extension Taps for Multiple Materials
OSGSpiral-Point Extension Taps for Multiple Materials

OSG Extension Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Extension Tap (5/16"-24 UNF, MPN 1653502708) is a spiral-point extension tap for multiple materials, featuring a H4 / 2B-3B tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes. 3G…

SKU 3G-OTH-402409

Brand
OSG
Item
Extension Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer
Category
Spiral-Point Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1653502708
Type
H4 / 2B-3B, Plug Chamfer, V Coated Powdered Metal
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap (5/16"-24 UNF, MPN 1653502708) is a spiral-point extension tap for multiple materials, featuring a H4 / 2B-3B tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes. 3G Electric interprets your demand for this precision threading tool, sourcing it from OSG and supporting your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG Extension Tap 5/16-24 UNF used for?

The OSG Extension Tap is designed for threading blind or deep holes in multiple materials. Its extended reach and spiral-point geometry push chips forward, making it suitable for production tapping in steel, stainless steel, and aluminum. The V coating reduces friction and extends tool life.

What are the specifications of the OSG Extension Tap 5/16-24 UNF?

This OSG tap has a 5/16-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made from V coated powdered metal. The manufacturer part number is 1653502708. It is designed for multiple materials and provides precise thread forming in deep-hole applications.

Where to buy the OSG Extension Tap 5/16-24 UNF worldwide?

3G Electric supplies the OSG Extension Tap 5/16-24 UNF worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this precision tapping tool to any country.

How to select the correct OSG Extension Tap for deep-hole threading?

Select an OSG extension tap based on thread size, pitch, and material. For 5/16-24 UNF threads, use a plug chamfer for blind holes. Ensure the tap's H4 tolerance matches your required thread class (2B or 3B). The V coated powdered metal construction suits harder materials and reduces wear.

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-point 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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