OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 31403808) is a 7/8"-14 UNF, H3 / 2B-3B, 4-flute, plug-chamfer tap designed for threading multiple materials. 3G Electric interprets your demand for this…
SKU 3G-OTH-284627
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: Spiral Point (MPN 31403808) is a 7/8"-14 UNF, H3 / 2B-3B, 4-flute, plug-chamfer tap designed for threading multiple materials. 3G Electric interprets your demand for this OEM-specified tool, sources it across 14 industrial departments, and supports with specialist depth in combustion, pumps, and controls.
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 multiple materials before installing a helical wire thread insert. It is essential for repairing or reinforcing threads in metal, aluminum, and cast iron across industrial maintenance, automotive, and aerospace applications.
What are the specifications of the OSG STI Tap 7/8"-14 UNF?
This OSG STI Tap has a 7/8"-14 UNF thread size, H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is a spiral-point design for through-hole tapping. The manufacturer part number is 31403808.
Where to buy OSG STI Tap 31403808 worldwide?
3G Electric supplies and delivers the OSG STI Tap 31403808 worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this spiral-point tap for multiple materials.
How to select the correct STI tap size for thread inserts?
Select an STI tap that matches the thread insert's nominal size and pitch, such as 7/8"-14 UNF. The tap tolerance (e.g., H3 / 2B-3B) must align with the insert's class. Always refer to the insert manufacturer's recommendations for pre-tap drill size and chamfer type.
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.
