OSG Screw Thread Insert STI Tap: Straight Fute, #8-36 UNF, H2 / 2B-3B, 3 Flute
SKU 3G-OTH-261983
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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.
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Common applications for OSGOSG 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.















