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OSG Screw Thread Insert STI Tap: Straight Fute, #8-36 UNF, H2 / 2B-3B, 3 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, #8-36 UNF, H2 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap (Straight Flute, MPN 12600300) is a general-purpose STI tap in #8-36 UNF size with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G Electric sources this precision threading…

SKU 3G-OTH-261983

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, #8-36 UNF, H2 / 2B-3B, 3 Flute
Category
General Purpose STI Taps
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Local availability & support

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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
12600300
Type
#8-36 UNF, H2 / 2B-3B, Plug Chamfer
Flute
3

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (Straight Flute, MPN 12600300) is a general-purpose STI tap in #8-36 UNF size with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G Electric sources this precision threading tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.

Frequently Asked Questions

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

An OSG STI tap cuts internal threads in a pre-drilled hole to accept a helical wire thread insert. It is used in machining and repair applications across industries like automotive and aerospace to restore or strengthen threads in softer materials such as aluminum or cast iron.

What are the specifications of the OSG STI Tap #8-36 UNF?

This OSG STI tap is #8-36 UNF with a H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for general-purpose thread insert installation. The manufacturer part number is 12600300. These specs ensure proper fit for #8-36 UNF screw thread inserts.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI taps worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine OSG cutting tools like this #8-36 UNF tap. Contact us for availability and lead time to your location.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread insert's nominal size and pitch, such as #8-36 UNF. The tap tolerance (e.g., H2 / 2B-3B) must align with the insert manufacturer's specification. Always verify the drill size and chamfer type (plug, bottoming, or taper) for your application 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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Cross-referenced by specification & description
OSG Screw Thread Insert STI Tap: Straight Fute, #8-36 UNF, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 12600400)
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