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OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H3 / 2B-3B, 4 Flute - Spiral-Point STI Taps for Multiple Materials
OSGSpiral-Point STI Taps for Multiple Materials

OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31402408, MPN 31402408) is a 9/16"-12 UNC spiral-point tap with H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. Designed for threading multiple materials, it…

SKU 3G-OTH-284718

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H3 / 2B-3B, 4 Flute
Category
Spiral-Point STI Taps for Multiple Materials
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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.

Technical Specifications

OSG
Manufacturer Part Number
31402408
Type
H3 / 2B-3B, Plug Chamfer
Flute
4
UNC
9/16"-12

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

Product Description

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31402408, MPN 31402408) is a 9/16"-12 UNC spiral-point tap with H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. Designed for threading multiple materials, it is supplied by 3G Electric, an industrial solutions provider that interprets customer demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps, and controls.

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 thread repair or reinforcement is required.

What are the specifications of the OSG 31402408 STI Tap?

The OSG 31402408 is a spiral-point STI tap with 9/16"-12 UNC thread size, H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is designed for threading holes prior to inserting screw thread inserts in various materials.

Where to buy the OSG 31402408 STI Tap worldwide?

You can source the OSG 31402408 STI Tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your operations.

How to select the correct STI tap for thread inserts?

Select an STI tap based on the insert's thread size and pitch, such as 9/16"-12 UNC. Ensure the tap tolerance (e.g., H3 / 2B-3B) matches the required thread class. OSG taps are designed for multiple materials; consult the manufacturer's recommendations for optimal results.

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-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.

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Cross-referenced by specification & description
OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute, Plug Chamfer (MPN 31402508)
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OSG Screw Thread Insert STI Tap: Spiral Point, 3/8"-16 UNC, H4 / 2B-3B, 3 Flute, Plug Chamfer (MPN 31401308)
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OSG Screw Thread Insert STI Tap: Spiral Point, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer (MPN 31402608)

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