OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 12502400) is a 7/8"-14 UNF, H4 / 2B-3B, 3-flute, plug-chamfer tap designed for installing screw thread inserts. 3G Electric sources this genuine OSG tool as part…
SKU 3G-OTH-286992
Local availability & support
- Delivery
- 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.
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Product Description
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 12502400) is a 7/8"-14 UNF, H4 / 2B-3B, 3-flute, plug-chamfer tap designed for installing screw thread inserts. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist depth in cutting tools and precision machining.
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 a workpiece before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce threads in softer materials like aluminum or cast iron.
What are the specifications of the OSG STI Tap 12502400?
The OSG STI Tap 12502400 has a thread size of 7/8"-14 UNF, a spiral-point design, 3 flutes, and a plug chamfer. It is ground to H4 tolerance for producing 2B-3B class threads. This tap is designed for through-hole threading and is made from high-speed steel for durability.
Where to buy OSG STI Taps worldwide?
You can source OSG STI Taps 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 times on the OSG 12502400 or other STI tap sizes.
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 12502400, use it with a 7/8"-14 UNF insert. Ensure the tap tolerance (H4) aligns with the required thread class (2B-3B). Always verify the material and hole type (through or blind) before choosing spiral-point or spiral-flute designs.
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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.
