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OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 7/8"-14 UNF threads, with H4 / 2B-3B tolerance and a plug chamfer. It features 4 flutes and is identified by manufacturer part…

SKU 3G-OTH-262099

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12604500
Type
H4 / 2B-3B, Plug Chamfer
Flute
4
UNF
7/8"-14
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 7/8"-14 UNF threads, with H4 / 2B-3B tolerance and a plug chamfer. It features 4 flutes and is identified by manufacturer part number 12604500.

Frequently Asked Questions

What is the OSG Screw Thread Insert STI Tap used for?

The OSG Screw Thread Insert STI Tap is used to cut internal threads in metal or plastic for installing helical wire thread inserts. It is commonly applied in automotive, aerospace, and general manufacturing to repair or reinforce stripped threads, ensuring strong, reusable connections.

What are the specifications of the OSG STI Tap 12604500?

This OSG STI Tap has a 7/8"-14 UNF thread size, H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is a straight flute, general-purpose tap designed for screw thread insert installation. The manufacturer part number is 12604500.

Where to buy the OSG STI Tap 12604500 worldwide?

You can source the OSG STI Tap 12604500 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to select the correct OSG STI Tap for thread repair?

Select an OSG STI Tap based on the thread size and pitch of the insert you need to install. Match the tap tolerance (e.g., H4 / 2B-3B) to the required class of fit. For a 7/8"-14 UNF insert, use this straight flute tap with a plug chamfer for general-purpose threading.

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 general purpose sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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