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OSG Extension Tap: 3/8"-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: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Extension Tap (3/8"-24 UNF, MPN 1653503108) is a spiral-point extension tap for multiple materials, featuring a H4 / 2B-3B tolerance, plug chamfer, and V coated powdered metal construction with 3 flutes. 3G…

SKU 3G-OTH-402413

Brand
OSG
Item
Extension Tap: 3/8"-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
1653503108
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 (3/8"-24 UNF, MPN 1653503108) is a spiral-point extension tap for multiple materials, featuring a H4 / 2B-3B tolerance, plug chamfer, and V coated powdered metal construction with 3 flutes. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.

Frequently Asked Questions

What is the OSG Extension Tap 3/8-24 UNF used for?

The OSG Extension Tap is designed for threading blind or deep holes in multiple materials. Its spiral-point design pushes chips forward, making it ideal for through-hole applications. The V coating on powdered metal enhances wear resistance and extends tool life in production environments.

What are the specifications of the OSG Extension Tap 3/8-24 UNF?

This OSG tap has a 3/8-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made of V coated powdered metal. The manufacturer part number is 1653503108. It is designed for threading multiple materials with a spiral-point geometry.

Where to buy the OSG Extension Tap 3/8-24 UNF worldwide?

3G Electric supplies the OSG Extension Tap 3/8-24 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 OSG tap to meet your production needs.

How to select the correct OSG extension tap for threading?

Select the OSG extension tap based on thread size, pitch, and tolerance class. For 3/8-24 UNF threads, use a tap with H4 / 2B-3B tolerance. Match the chamfer type to your hole: plug chamfer for blind holes. Ensure the tap material suits your workpiece—V coated powdered metal works well on multiple materials.

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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