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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 straight-flute, general-purpose STI tap for 7/8"-9 UNC threads. It features an H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 12604100). 3G Electric interprets demand…

SKU 3G-OTH-262046

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
12604100
Type
H5 / 2B-3B, Plug 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 straight-flute, general-purpose STI tap for 7/8"-9 UNC threads. It features an H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 12604100). 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

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

This OSG STI tap cuts internal threads in metal for screw thread inserts. It is used in general-purpose machining to prepare holes for helical coil inserts, restoring or reinforcing threads in automotive, aerospace, and industrial equipment.

What are the specifications of the OSG STI Tap 12604100?

The OSG STI Tap has a 7/8"-9 UNC thread size, H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is a straight-flute, general-purpose tap designed for screw thread insert applications. The manufacturer part number is 12604100.

Where to buy the OSG STI Tap 12604100 worldwide?

You can source the OSG STI Tap 12604100 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 a thread repair job?

Match the tap to the insert size: for a 7/8"-9 UNC insert, use this OSG STI tap with H5 tolerance and plug chamfer. Ensure the tap drill size matches the insert manufacturer's recommendation. OSG taps are precision-ground for consistent thread class.

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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