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OSG Extension Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute

OSG Spiral-Flute Extension Taps for Multiple Materials.

SKU 3G-OTH-311715

Brand
OSG
Item
Extension Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
1652503308

Technical Documents

No technical documents available for this product.
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

OSG Spiral-Flute Extension Taps for Multiple Materials.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is an OSG extension tap used for?

An OSG extension tap is used for threading blind holes or hard-to-reach areas in multiple materials. Its extended reach and spiral-flute design efficiently evacuate chips, making it ideal for maintenance, repair, and production applications across machining and industrial departments.

What are the specifications of the OSG 1/2"-13 UNC extension tap?

This OSG extension tap has a 1/2"-13 UNC thread size, H5 tolerance for 2B-3B fit, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1652503308. It is designed for threading multiple materials in confined spaces.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine OSG taps to support your threading needs across 14 industrial departments, including machining and maintenance.

How to select the right OSG extension tap for a job?

To select the right OSG extension tap, match the thread size (e.g., 1/2"-13 UNC), chamfer type (modified bottoming for blind holes), and flute count (3 flutes for chip evacuation) to your material and hole depth. 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: 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)
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: 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)
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: 3/4"-10 UNC, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652504508)
OSG
OSG Extension Tap: 3/4"-10 UNC, H5 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652504508)
OSG Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652503508)
OSG
OSG Extension Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652503508)

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