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OSG Extension Tap: 1/4"-28 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: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Extension Tap (1/4"-28 UNF) 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 (MPN 1653502308). 3G…

SKU 3G-OTH-402410

Brand
OSG
Item
Extension Tap: 1/4"-28 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
1653502308
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 (1/4"-28 UNF) 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 (MPN 1653502308). 3G Electric sources this genuine industrial tool across 14 departments, with specialist expertise in combustion, pumps, and controls ensuring accurate sourcing and support.

Frequently Asked Questions

What is the OSG Extension Tap 1/4"-28 UNF used for?

This OSG extension tap is designed for threading blind or through holes in multiple materials, including steel, stainless steel, and aluminum. Its spiral-point design pushes chips forward, making it ideal for through-hole applications. The V coating and powdered metal construction provide wear resistance and extended tool life in production environments.

What are the specifications of the OSG Extension Tap 1/4"-28 UNF?

The OSG Extension Tap (MPN 1653502308) has a 1/4"-28 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made from V coated powdered metal. This spiral-point tap is designed for threading multiple materials and is suitable for both 2B and 3B thread classes.

Where to buy the OSG Extension Tap 1/4"-28 UNF worldwide?

3G Electric supplies the OSG Extension Tap 1/4"-28 UNF (MPN 1653502308) worldwide. As a global industrial equipment 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 any country.

How to select the correct OSG extension tap for my application?

Select the OSG extension tap based on thread size, pitch, and material. For 1/4"-28 UNF threads in multiple materials, this H4 / 2B-3B tap with plug chamfer is suitable. Ensure the tap length provides adequate reach for deep holes. Consult OSG's technical data for specific material recommendations and cutting parameters.

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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