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OSG Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Plug Chamfer - Spiral-Point Extension Taps for Multiple Materials
OSGSpiral-Point Extension Taps for Multiple Materials

OSG Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Extension Tap (1/2"-20 UNF) is a spiral-point extension tap for multiple materials, featuring an H5 / 2B-3B tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes (MPN 1653503908). 3G…

SKU 3G-OTH-402452

Brand
OSG
Item
Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Plug Chamfer
Category
Spiral-Point Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1653503908
Type
H5 / 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 (1/2"-20 UNF) is a spiral-point extension tap for multiple materials, featuring an H5 / 2B-3B tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes (MPN 1653503908). 3G Electric interprets this demand and sources the genuine OSG tool, backed by our specialist expertise across 14 industrial departments — including machining — and our trusted support for combustion, pumps, and controls.

Frequently Asked Questions

What is the OSG extension tap 1/2"-20 UNF used for?

This OSG extension tap is designed for threading blind or deep holes in multiple materials. Its spiral-point design pushes 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 1/2"-20 UNF?

This OSG tap has a 1/2"-20 UNF thread size, H5 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made of V coated powdered metal with manufacturer part number 1653503908. The extension design allows access to recessed areas.

Where to buy the OSG extension tap 1/2"-20 UNF worldwide?

3G Electric supplies the OSG extension tap 1/2"-20 UNF worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source genuine OSG tooling for industrial applications globally.

How to select the correct OSG extension tap for threading?

Select based on thread size, pitch, and material. For 1/2"-20 UNF threads in steel or aluminum, this OSG tap with H5 tolerance and V coating is suitable. Ensure the extension length matches your hole depth. Use proper tapping speed and lubrication for best results.

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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