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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H4 / 2B-3B, 3 Flute - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H4 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap (Spiral Flute, MPN 0147308) is a 7/16"-14 UNC bottoming-chamfer tap with H4 / 2B-3B tolerance and 3 flutes, designed for threading steel and stainless steel. 3G Electric interprets…

SKU 3G-OTH-244385

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0147308
Type
H4 / 2B-3B, Bottoming Chamfer
Flute
3
UNC
7/16"-14
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap (Spiral Flute, MPN 0147308) is a 7/16"-14 UNC bottoming-chamfer tap with H4 / 2B-3B tolerance and 3 flutes, designed for threading steel and stainless steel. 3G Electric interprets your demand for this OEM-specified tool, sources it from our global network, and delivers it with accountable support across 14 industrial 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-flute STI tap is designed for cutting internal threads in steel and stainless steel before installing screw thread inserts. It is commonly used in automotive, aerospace, and general manufacturing applications where strong, wear-resistant threads are required.

What are the specifications of the OSG STI Tap 0147308?

The OSG STI tap has a UNC thread size of 7/16"-14, a tolerance class of H4 / 2B-3B, 3 flutes, and a bottoming chamfer. It is a spiral-flute type optimized for steel and stainless steel. The manufacturer part number is 0147308.

Where to buy OSG STI Tap 0147308 worldwide?

3G Electric supplies the OSG STI Tap 0147308 to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver globally.

How to select the correct OSG STI tap for a thread insert?

Select an STI tap that matches the thread insert's size and tolerance. For a 7/16"-14 UNC insert, use a tap with the same thread designation. The H4 / 2B-3B tolerance ensures proper fit. OSG taps are designed for steel and stainless steel; verify material compatibility before use.

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 steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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