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OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, with an M8x1.25 Metric thread size and a D3 / 4H-6H tolerance class. It features 3 flutes and is identified by manufacturer part…

SKU 3G-OTH-281066

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H
Category
Spiral-Flute STI Taps for Multiple Materials
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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
34500701
Type
M8x1.25 Metric, D3 / 4H-6H
Flute
3

Technical Documents

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

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, with an M8x1.25 Metric thread size and a D3 / 4H-6H tolerance class. It features 3 flutes and is identified by manufacturer part number 34500701.

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials before installing a helical wire thread insert. It is commonly applied in automotive, aerospace, and general manufacturing to repair or reinforce threaded holes in softer metals like aluminum or cast iron.

What are the specifications of the OSG STI Tap M8x1.25?

The OSG STI Tap has a metric M8x1.25 thread size with a D3 / 4H-6H tolerance class. It features a spiral flute design with 3 flutes, suitable for through-hole threading in multiple materials. The manufacturer part number is 34500701, and it is designed for use with screw thread inserts.

Where to buy OSG STI Tap M8x1.25 worldwide?

You can source the OSG STI Tap M8x1.25 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG cutting tools for industrial applications.

How to select the correct OSG STI tap for thread inserts?

To select the correct OSG STI tap, match the tap thread size and pitch to the insert's internal thread requirement. For M8x1.25 inserts, use an STI tap with D3 / 4H-6H tolerance. Ensure the tap flute type suits your material—spiral flute for through holes. Always refer to OSG's technical data for material-specific speeds and feeds.

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 for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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