OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, featuring a 7/16"-20 UNF thread, H3 / 2B-3B tolerance, 3-flute design, and plug chamfer (MPN 31401808). 3G Electric interprets…
SKU 3G-OTH-284737
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 for multiple materials, featuring a 7/16"-20 UNF thread, H3 / 2B-3B tolerance, 3-flute design, and plug chamfer (MPN 31401808). 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
This OSG spiral-point STI tap is designed for cutting internal threads in multiple materials before installing screw thread inserts. It is commonly used in aerospace, automotive, and general manufacturing applications where reliable thread repair or reinforcement is required.
What are the specifications of the OSG STI Tap 31401808?
The OSG STI tap has a UNF thread size of 7/16"-20, a tolerance of H3 / 2B-3B, 3 flutes, and a plug chamfer. It is a spiral-point design for efficient chip evacuation. The manufacturer part number is 31401808.
Where to buy the OSG STI Tap 31401808 worldwide?
You can source the OSG STI Tap 31401808 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring a smooth procurement process for your facility.
How to select the correct OSG STI tap for thread inserts?
Select an STI tap based on the thread insert's size and tolerance. For a 7/16"-20 UNF insert, use a tap with matching thread pitch and an H3 tolerance for 2B-3B class fit. Always verify the tap's chamfer type and flute count match your material and application.
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.
