OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (MPN 10802300) is a spiral-flute tap for 7/8"-14 UNF threads, featuring an H4 / 2B-3B tolerance and a bottoming chamfer with 4 flutes. 3G Electric interprets this demand and…
SKU 3G-OTH-273382
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Product Description
The OSG Screw Thread Insert STI Tap (MPN 10802300) is a spiral-flute tap for 7/8"-14 UNF threads, featuring an H4 / 2B-3B tolerance and a bottoming chamfer with 4 flutes. 3G Electric interprets this demand and sources the genuine OSG tool, supporting your machining operations across 14 industrial departments — with specialist depth in cutting tools 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 metal or plastic to accept helical wire thread inserts. It is used in aerospace, automotive, and industrial maintenance to repair or reinforce stripped threads, ensuring strong, reusable connections.
What are the specifications of the OSG 10802300 STI Tap?
The OSG 10802300 is a spiral-flute STI tap with a 7/8"-14 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for through or blind holes and produces threads that accept standard screw thread inserts.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps like the 10802300 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this precision 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, such as 7/8"-14 UNF. Use a bottoming chamfer for blind holes and a spiral flute for chip evacuation. Always verify the insert manufacturer's recommended tap drill size before cutting.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















