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OSG Extension Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

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

OSG Spiral-Flute Extension Taps for Multiple Materials.

SKU 3G-OTH-311728

Brand
OSG
Item
Extension Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652502108

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

OSG Spiral-Flute Extension Taps for Multiple Materials.

Frequently Asked Questions

What is the OSG extension tap 5/16"-18 UNC used for?

This OSG extension tap is designed for threading blind holes in multiple materials, including steel, stainless steel, and aluminum. Its spiral-flute design evacuates chips upward, making it ideal for deep-hole tapping. The modified bottoming chamfer allows threading close to the bottom of the hole.

What are the specifications of the OSG extension tap MPN 1652502108?

The OSG extension tap MPN 1652502108 has a thread size of 5/16"-18 UNC, with an H5 tolerance for class 2B-3B fit. It features 3 flutes and a modified bottoming chamfer. The spiral-flute design is optimized for chip evacuation in multiple materials.

Where to buy OSG extension taps in worldwide?

You can source OSG extension taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this MPN 1652502108.

How to select the correct OSG extension tap for threading?

Select the OSG extension tap based on thread size, pitch, and material. For blind holes, use a spiral-flute tap like this 5/16"-18 UNC with modified bottoming chamfer. Ensure the tap tolerance (H5) matches the required thread class (2B-3B). Consult OSG's technical data for optimal speeds and feeds.

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-flute 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Extension Tap: 3/8"-16 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502508)
OSG
OSG Extension Tap: 3/8"-16 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502508)
This OSG spiral-flute extension tap is designed for threading blind holes in multiple materials. The spiral-flute design evacuates chips upward, making it suitable for deep-hole tapping. It features a modified bottoming chamfer for threading close to the bottom of the hole, with an H5 pitch diameter tolerance for 2B-3B class fit
OSG
This OSG spiral-flute extension tap is designed for threading blind holes in multiple materials. The spiral-flute design evacuates chips upward, making it suitable for deep-hole tapping. It features a modified bottoming chamfer for threading close to the bottom of the hole, with an H5 pitch diameter tolerance for 2B-3B class fit
OSG Extension Tap: 1/4"-20 UNC, H5 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501708)
OSG
OSG Extension Tap: 1/4"-20 UNC, H5 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501708)
OSG Extension Tap: 9/16"-12 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652503708)
OSG
OSG Extension Tap: 9/16"-12 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652503708)
OSG Extension Tap: 3/4"-16 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652504708)
OSG
OSG Extension Tap: 3/4"-16 UNF, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652504708)
OSG Extension Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502908)
OSG
OSG Extension Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502908)

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