OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-9 UNC, H5 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 7/8"-9 UNC with H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403701). 3G Electric interprets this demand and…
SKU 3G-OTH-284719
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 is a spiral-point tap for multiple materials, specified as 7/8"-9 UNC with H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403701). 3G Electric interprets this demand and sources the genuine OSG tool, backed by specialist expertise across 14 industrial departments — including cutting tools — to ensure you get the right solution, not just a part number.
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 automotive, aerospace, and general manufacturing applications where strong, replaceable threads are required.
What are the specifications of the OSG 31403701 STI tap?
The OSG 31403701 is a spiral-point STI tap with a 7/8"-9 UNC thread size, H5 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is designed for tapping holes that will accept screw thread inserts in a variety of materials.
Where to buy OSG taps in worldwide?
You can source OSG taps, including the 31403701, through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide locations, ensuring you receive the correct tooling for your application.
How to select the correct STI tap for thread inserts?
To select the correct STI tap, match the tap's thread size and pitch to the insert's specifications. For example, the OSG 31403701 is a 7/8"-9 UNC tap with H5 tolerance, suitable for 2B-3B class threads. Always verify the insert manufacturer's recommended 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.
