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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

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

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps
Available to Order
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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

Technical Specifications

OSG
Manufacturer Part Number
10802300
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
7/8"-14

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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 OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG 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.

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