OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-18 UNF, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap (MPN 12501100) is a spiral-point tap designed for 9/16"-18 UNF threads. It features an H3 / 2B-3B tolerance with a plug chamfer and 3 flutes, enabling efficient chip evacuation…
SKU 3G-OTH-287013
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Product Description
The OSG Screw Thread Insert STI Tap (MPN 12501100) is a spiral-point tap designed for 9/16"-18 UNF threads. It features an H3 / 2B-3B tolerance with a plug chamfer and 3 flutes, enabling efficient chip evacuation during thread insertion in industrial applications.
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to cut internal threads in pre-drilled holes for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce stripped threads in metal components.
What are the specifications of the OSG STI Tap 12501100?
The OSG STI Tap 12501100 has a thread size of 9/16"-18 UNF, a thread tolerance of H3 / 2B-3B, 3 flutes, and a plug chamfer. It features a spiral-point design for efficient chip evacuation and is made for use with screw thread inserts.
Where to buy OSG STI Tap 12501100 worldwide?
You can source the OSG STI Tap 12501100 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct OSG STI tap for a thread repair?
To select the correct OSG STI tap, match the tap's thread size and pitch to the insert's specifications. For the 12501100, use a 9/16"-18 UNF insert. Ensure the tap tolerance (H3 / 2B-3B) aligns with the required thread class. Always follow the insert manufacturer's drilling and tapping guidelines.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















