OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading multiple materials, specified as 9/16"-12 UNC with H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31402508). 3G Electric…
SKU 3G-OTH-284736
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading multiple materials, specified as 9/16"-12 UNC with H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31402508). 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist expertise in combustion, pumps, and controls across 14 industrial departments.
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap cuts internal threads in multiple materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in aluminum, steel, and cast iron.
What are the specifications of the OSG STI Tap 31402508?
The OSG STI Tap 31402508 is a spiral-point, plug-chamfer tap with a 9/16"-12 UNC thread, H4 / 2B-3B tolerance, and 4 flutes. It is designed for tapping holes that will receive screw thread inserts in multiple materials.
Where to buy OSG STI Tap 31402508 worldwide?
3G Electric supplies the OSG STI Tap 31402508 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this spiral-point tap for thread insert applications.
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 9/16"-12 UNC. The tap tolerance (e.g., H4 / 2B-3B) must align with the insert manufacturer's recommended class of fit. Always verify the tap's plug chamfer and flute count suit your material.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
