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OSG Extension Tap: 5/16"-18 UNC, H5 / 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"-18 UNC, H5 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Extension Tap (5/16"-18 UNC) is a spiral-point extension tap for multiple materials, specified as H5 / 2B-3B with a plug chamfer and V Coated Powdered Metal construction. It features 3 flutes and is…

SKU 3G-OTH-402465

Brand
OSG
Item
Extension Tap: 5/16"-18 UNC, 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
1653502508
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 (5/16"-18 UNC) is a spiral-point extension tap for multiple materials, specified as H5 / 2B-3B with a plug chamfer and V Coated Powdered Metal construction. It features 3 flutes and is identified by manufacturer part number 1653502508.

Frequently Asked Questions

What is the OSG Extension Tap 5/16"-18 UNC 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 ideal for production tapping in steel, stainless steel, and cast iron. The V coating and powdered metal construction provide wear resistance and extended tool life.

What are the specifications of the OSG Extension Tap 5/16"-18 UNC?

The OSG extension tap has a 5/16"-18 UNC thread size, H5 tolerance for 2B-3B class fit, 3 flutes, and a plug chamfer. It is made of V coated powdered metal with MPN 1653502508. This tap is suitable for threading multiple materials including steel and cast iron.

Where to buy the OSG Extension Tap 5/16"-18 UNC worldwide?

You can source the OSG Extension Tap 5/16"-18 UNC worldwide through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG extension tap for threading?

Select the OSG extension tap based on thread size, pitch, and material. For 5/16"-18 UNC threads in steel or cast iron, this V coated powdered metal tap with plug chamfer is suitable. Ensure the tap drill size matches the hole depth and that the extension length accommodates deep or blind holes.

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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