OSG Screw Thread Insert STI Tap: Spiral Point, 5/16"-18 UNC, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (MPN 31400908) is a 5/16"-18 UNC, H2 / 2B-3B, 3-flute, plug-chamfer tap designed for threading multiple materials. 3G Electric interprets your demand for this…
SKU 3G-OTH-284693
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 31400908) is a 5/16"-18 UNC, H2 / 2B-3B, 3-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 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 5/16"-18 UNC?
This OSG STI Tap has a 5/16"-18 UNC thread, H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is a spiral-point design for through-hole tapping. The manufacturer part number is 31400908.
Where to buy OSG STI Tap 31400908 worldwide?
3G Electric supplies and delivers the OSG STI Tap 31400908 worldwide. We handle full logistics and customs clearance, ensuring the correct tap reaches your facility. Contact us for availability and lead time on this spiral-point STI tap.
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 5/16"-18 UNC. The tap must have STI marking and the correct tolerance class (e.g., H2 / 2B-3B) to produce threads that accept the insert without interference. Always verify the insert manufacturer's recommendations.
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.
