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OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-9 UNC, H5 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-9 UNC, H5 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 7/8"-9 UNC, H5 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604200). 3G Electric sources this…

SKU 3G-OTH-262090

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 7/8"-9 UNC, H5 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12604200
Type
H5 / 2B-3B, Bottoming Chamfer
Flute
4
UNC
7/8"-9
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 7/8"-9 UNC, H5 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604200). 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls ensuring accurate sourcing and support for your threading applications.

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 screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG STI Tap 12604200?

This OSG STI Tap has a UNC thread size of 7/8"-9, with a tolerance of H5 / 2B-3B. It features 4 flutes, a straight flute design, and a bottoming chamfer. The manufacturer part number is 12604200, and it is designed for general purpose thread cutting.

Where to buy OSG STI Tap 12604200 worldwide?

You can source the OSG STI Tap 12604200 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct tap for your threading application.

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

To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's specifications. For a 7/8"-9 UNC insert, use this tap with H5 tolerance for 2B-3B class threads. Ensure the chamfer type (bottoming for blind holes) and flute count suit your material and hole depth.

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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