OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-14 UNC, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 7/16"-14 UNC with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30101701).
SKU 3G-OTH-265441
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 steel and stainless steel, specified as 7/16"-14 UNC with H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30101701).
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 steel and stainless steel to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and heavy equipment repair where stripped threads must be restored to original strength without replacing the parent component.
What are the specifications of the OSG 30101701 STI Tap?
The OSG 30101701 is a spiral-point STI tap with 7/16"-14 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading holes that will receive screw thread inserts in steel and stainless steel materials.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 30101701 or any other OSG threading tool.
How to select the correct STI tap size for a thread repair?
Select an STI tap that matches the original thread size and pitch — for example, 7/16"-14 UNC. The tap must be marked H3 / 2B-3B to produce threads that accept the corresponding insert. Always use a plug chamfer for through holes and a bottoming chamfer for blind holes.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
