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OSG Screw Thread Insert STI Tap: Spiral Point, 1/2"-20 UNF, H4 / 2B-3B, 3 Flute - Spiral-Point STI Taps for Multiple Materials
OSGSpiral-Point STI Taps for Multiple Materials

OSG Screw Thread Insert STI Tap: Spiral Point, 1/2"-20 UNF, H4 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, featuring a 1/2"-20 UNF thread size, H4 / 2B-3B tolerance, 3-flute design, and plug chamfer (MPN 31402308).

SKU 3G-OTH-284703

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 1/2"-20 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
31402308
Type
H4 / 2B-3B, Plug Chamfer
Flute
3
UNF
1/2"-20
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, featuring a 1/2"-20 UNF thread size, H4 / 2B-3B tolerance, 3-flute design, and plug chamfer (MPN 31402308).

Frequently Asked Questions

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

The OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials before installing a screw thread insert. It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG STI Tap 31402308?

This OSG STI Tap has a 1/2"-20 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is a spiral-point design for efficient chip evacuation. The manufacturer part number is 31402308.

Where to buy the OSG Screw Thread Insert STI Tap worldwide?

You can source the OSG Screw Thread Insert STI Tap through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations, ensuring you receive the correct OSG tool for your application.

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

Select an OSG STI Tap based on the thread size and tolerance required for your insert. For a 1/2"-20 UNF insert, use this H4 / 2B-3B tap with a plug chamfer. Always match the tap to the insert manufacturer's specifications for proper thread fit.

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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