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OSG 1/2"-13 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flute - Spiral-Point STI Taps for Multiple Materials
OSGSpiral-Point STI Taps for Multiple Materials

OSG 1/2"-13 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flute

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31402108, MPN 31402108) is a spiral-point STI tap for multiple materials, with a 1/2"-13 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G…

SKU 3G-OTH-284659

Brand
OSG
Item
1/2"-13 UNC Spiral-Point STI Tap, H4 / 2B-3B, Plug Chamfer, 3 Flute
Part Number
31402108
Category
Spiral-Point STI Taps for Multiple Materials
Available to Order
Also known as:31402108OSG
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
31402108
Type
H4 / 2B-3B, Plug Chamfer
Flute
3
UNC
1/2"-13

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

Product Description

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31402108, MPN 31402108) is a spiral-point STI tap for multiple materials, with a 1/2"-13 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial tap across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 for installing screw thread inserts. It is commonly applied in automotive, aerospace, and general manufacturing where thread repair or reinforcement is needed. The spiral-point design pushes chips forward, making it suitable for through-hole applications.

What are the specifications of the OSG 1/2"-13 UNC STI Tap?

This OSG STI tap has a 1/2"-13 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. The spiral-point geometry is designed for through-hole threading in multiple materials. The manufacturer part number is 31402108. It is intended for use with screw thread inserts to achieve Class 2B or 3B fit.

Where to buy the OSG 31402108 STI Tap worldwide?

3G Electric supplies the OSG 31402108 STI Tap worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this OSG spiral-point tap to meet your production needs.

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

Select an OSG STI tap based on the insert's thread size and tolerance. For a 1/2"-13 UNC insert, use a tap with H4 / 2B-3B tolerance and plug chamfer. The spiral-point design is best for through holes. Always match the tap to the material being threaded and follow OSG's recommended speeds and feeds for optimal thread quality.

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
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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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