We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Extension Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute

SKU 3G-OTH-311703

Brand
OSG
Item
Extension Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OSG
Manufacturer Part Number
1652501508
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Frequently Asked Questions

What is OSG Extension Tap #12-28 UNF used for?

The OSG Extension Tap #12-28 UNF is used for threading blind or deep holes in multiple materials, including steel, aluminum, and cast iron. Its spiral-flute design evacuates chips upward, while the modified bottoming chamfer allows threading close to the hole bottom. 3G Electric supplies this tap globally.

What are the specifications of OSG Extension Tap 1652501508?

The OSG Extension Tap 1652501508 has a #12-28 UNF thread size, H3 / 2B-3B tolerance class, 2-flute spiral-flute design, and modified bottoming chamfer. It is designed for threading multiple materials. 3G Electric sources and delivers this OSG tap worldwide.

Where to buy OSG Extension Tap #12-28 UNF worldwide?

3G Electric supplies the OSG Extension Tap #12-28 UNF worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this OSG tap for your threading applications.

How to select the correct OSG extension tap for deep hole threading?

Select an OSG extension tap based on thread size (e.g., #12-28 UNF), material type, and hole depth. For blind holes, use a modified bottoming chamfer. The spiral-flute design aids chip evacuation. 3G Electric can help you choose the right OSG tap for your application.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
OSG Extension Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501408). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501408). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502708). Key specifications — attr1315101: H4 / 2B-3B.
OSG
OSG Extension Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502708). Key specifications — attr1315101: H4 / 2B-3B.
OSG Extension Tap: #10-32 UNF, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501308). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #10-32 UNF, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501308). Key specifications — attr1315101: H3 / 2B-3B.
OSG Extension Tap: 1"-12 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652505508). Key specifications — attr1315101: H6 / 2B-3B.
OSG
OSG Extension Tap: 1"-12 UNF, H6 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1652505508). Key specifications — attr1315101: H6 / 2B-3B.
OSG Extension Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502308). Key specifications — attr1315101: H4 / 2B-3B.
OSG
OSG Extension Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1652502308). Key specifications — attr1315101: H4 / 2B-3B.
OSG Extension Tap: #10-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501108). Key specifications — attr1315101: H3 / 2B-3B.
OSG
OSG Extension Tap: #10-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1652501108). Key specifications — attr1315101: H3 / 2B-3B.

More from OSG

View all OSG parts →
OSG Extension Tap: M5x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652002008). Key specifications — attr1315101: D3 / 4H-6H.
OSG
OSG Extension Tap: M5x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652002008). Key specifications — attr1315101: D3 / 4H-6H.
OSG Extension Tap: M16x1.5 Metric, D6 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652007508). Key specifications — attr1315101: D6 / 4H-6H.
OSG
OSG Extension Tap: M16x1.5 Metric, D6 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652007508). Key specifications — attr1315101: D6 / 4H-6H.
OSG Extension Tap: M18x1.5 Metric, D6, 4 Flute, Modified Bottoming Chamfer, V Coated Powdered Metal (MPN 1652008108)
OSG
OSG Extension Tap: M18x1.5 Metric, D6, 4 Flute, Modified Bottoming Chamfer, V Coated Powdered Metal (MPN 1652008108)
OSG Extension Tap: M3x0.35 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652001208). Key specifications — attr1315101: D3 / 4H-6H.
OSG
OSG Extension Tap: M3x0.35 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652001208). Key specifications — attr1315101: D3 / 4H-6H.
OSG Extension Tap: M10x0.75 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652004508). Key specifications — attr1315101: D4 / 4H-6H.
OSG
OSG Extension Tap: M10x0.75 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652004508). Key specifications — attr1315101: D4 / 4H-6H.
OSG Extension Tap: M22x1.5 Metric, D6 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1652008908). Key specifications — attr1315101: D6 / 4H-6H.
OSG
OSG Extension Tap: M22x1.5 Metric, D6 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1652008908). Key specifications — attr1315101: D6 / 4H-6H.
OSG Extension Tap: M20x2.5 Metric, D7 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1652008708). Key specifications — attr1315101: D7 / 4H-6H.
OSG
OSG Extension Tap: M20x2.5 Metric, D7 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1652008708). Key specifications — attr1315101: D7 / 4H-6H.
OSG Extension Tap: M6x0.75 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652002508). Key specifications — attr1315101: D4 / 4H-6H.
OSG
OSG Extension Tap: M6x0.75 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1652002508). Key specifications — attr1315101: D4 / 4H-6H.