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OSG Screw Thread Insert STI Tap: Straight Fute, 1"-8 UNC, H4 / 2B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 1"-8 UNC, H4 / 2B, 4 Flute

The OSG Screw Thread Insert STI Tap (SKU 33ZK67) is a general-purpose STI tap with a straight flute design, specified as 1"-8 UNC, H4 / 2B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604800). 3G Electric…

SKU 3G-OTH-262148

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 1"-8 UNC, H4 / 2B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12604800
Type
H4 / 2B, Bottoming Chamfer
Flute
4
UNC
1"-8
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (SKU 33ZK67) is a general-purpose STI tap with a straight flute design, specified as 1"-8 UNC, H4 / 2B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604800). 3G Electric interprets this demand and sources the exact OEM-specified tool, backed by specialist expertise across 14 industrial departments — and we supply far more than is listed.

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 coil thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce stripped threads without replacing the parent component.

What are the specifications of the OSG STI Tap 12604800?

This OSG STI Tap has a UNC thread size of 1"-8, with H4 / 2B tolerance and a bottoming chamfer. It features 4 straight flutes for chip evacuation. The manufacturer part number is 12604800, and it is designed for general-purpose thread repair in ferrous and non-ferrous materials.

Where to buy the OSG STI Tap 12604800 worldwide?

You can source the OSG STI Tap 12604800 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 on this precision threading tool.

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

To select the correct OSG STI tap, match the tap's thread size and pitch to the insert's specifications. For this 1"-8 UNC tap, ensure the hole is pre-drilled to the recommended STI minor diameter. Use a bottoming chamfer for blind holes and a taper chamfer for through holes.

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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