Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer - Oversized Thread-Forming Taps
OSGOversized Thread-Forming Taps

OSG Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer

SKU 3G-OTH-281681

Brand
OSG
Item
Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer
Category
Oversized Thread-Forming Taps
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
1400139005
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 an OSG thread forming tap used for?

An OSG thread forming tap creates internal threads by displacing material rather than cutting it. This TiN coated cobalt tap is used for threading in ductile materials like aluminum, brass, and low-carbon steel, producing stronger threads with no chips.

What are the specifications of the OSG thread forming tap 1400139005?

This OSG tap has a 3/8"-24 UNF thread size, H12 tolerance, plug chamfer, and TiN coating on cobalt steel. The H12 designation indicates an oversized thread form for applications requiring tighter fit or after coating. MPN is 1400139005.

Where to buy OSG thread forming taps worldwide?

3G Electric supplies OSG thread forming taps worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this H12 tap.

How to select the correct OSG thread forming tap size?

Select based on thread size (3/8"-24 UNF), material type, and tolerance class. The H12 oversized tap is chosen when standard H limits produce loose threads or when post-coating fit is needed. Always match tap chamfer (plug) to hole depth and machine type.

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 oversized thread-forming taps. 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 Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400139008). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400139008). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer, Cobalt (MPN 1400139000). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 3/8"-24 UNF, H12, Plug Chamfer, Cobalt (MPN 1400139000). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 7/16"-20 UNF, H12, Plug Chamfer, TiN Coated Cobalt (MPN 1400142605). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 7/16"-20 UNF, H12, Plug Chamfer, TiN Coated Cobalt (MPN 1400142605). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Plug Chamfer, TiN Coated Cobalt (MPN 1400136705). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Plug Chamfer, TiN Coated Cobalt (MPN 1400136705). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 7/16"-20 UNF, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400142608). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 7/16"-20 UNF, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400142608). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400136708). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Plug Chamfer, TiCN Coated Cobalt (MPN 1400136708). Key specifications — attr1299891: H12.

More from OSG

View all OSG parts →
OSG Thread Forming Tap: 5/8"-18 UNF, H12 / 2B, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400152505). Key specifications — attr1299891: H12 / 2B.
OSG
OSG Thread Forming Tap: 5/8"-18 UNF, H12 / 2B, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400152505). Key specifications — attr1299891: H12 / 2B.
OSG Thread Forming Tap: M12x1.75 Metric, D11 / 6H, Bottoming Chamfer, Black Oxide Cobalt (MPN 1410105501). Key specifications — attr1299891: D11 / 6H.
OSG
OSG Thread Forming Tap: M12x1.75 Metric, D11 / 6H, Bottoming Chamfer, Black Oxide Cobalt (MPN 1410105501). Key specifications — attr1299891: D11 / 6H.
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Modified Bottoming Chamfer, TiCN Coated Cobalt (MPN 1400135808). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 3/8"-16 UNC, H12, Modified Bottoming Chamfer, TiCN Coated Cobalt (MPN 1400135808). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 9/16"-18 UNF, H12, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400148905). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 9/16"-18 UNF, H12, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400148905). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 9/16"-12 UNC, H12 / 2B, Modified Bottoming Chamfer, Cobalt (MPN 1400147100). Key specifications — attr1299891: H12 / 2B.
OSG
OSG Thread Forming Tap: 9/16"-12 UNC, H12 / 2B, Modified Bottoming Chamfer, Cobalt (MPN 1400147100). Key specifications — attr1299891: H12 / 2B.
OSG Thread Forming Tap: #10-32 UNF, H14, Modified Bottoming Chamfer, TiCN Coated Cobalt (MPN 1400160108). Key specifications — attr1299891: H14.
OSG
OSG Thread Forming Tap: #10-32 UNF, H14, Modified Bottoming Chamfer, TiCN Coated Cobalt (MPN 1400160108). Key specifications — attr1299891: H14.
OSG Thread Forming Tap: 1/2"-20 UNF, H12, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400145305). Key specifications — attr1299891: H12.
OSG
OSG Thread Forming Tap: 1/2"-20 UNF, H12, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400145305). Key specifications — attr1299891: H12.
OSG Thread Forming Tap: 3/4"-10 UNC, H13 / 2B, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400154205). Key specifications — attr1299891: H13 / 2B.
OSG
OSG Thread Forming Tap: 3/4"-10 UNC, H13 / 2B, Modified Bottoming Chamfer, TiN Coated Cobalt (MPN 1400154205). Key specifications — attr1299891: H13 / 2B.