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OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H3 / 2B-3B, 4 Flute - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap (MPN 8017000) is a spiral-flute tap for 7/16"-14 UNC threads, with H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for thread-insert…

SKU 3G-OTH-273366

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H3 / 2B-3B, 4 Flute
Category
Spiral-Flute STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
8017000
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
4
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 (MPN 8017000) is a spiral-flute tap for 7/16"-14 UNC threads, with H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for thread-insert installation. 3G Electric sources this genuine OSG tool across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate specification and support.

Frequently Asked Questions

What is an OSG spiral-flute STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads for screw thread inserts in metalwork. It is designed for bottoming chamfer applications, producing threads to H3 / 2B-3B tolerance classes. Common in automotive and aerospace manufacturing, it ensures precise thread fit for insert installation.

What are the specifications of the OSG 8017000 STI tap?

The OSG 8017000 is a spiral-flute STI tap with a 7/16"-14 UNC thread size, H3 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for cutting threads in materials requiring screw thread inserts. The spiral flute aids chip evacuation in blind-hole applications.

Where to buy OSG taps in worldwide?

You can source OSG taps 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 times on the OSG 8017000 spiral-flute STI tap.

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

Select an OSG STI tap based on the insert's thread size and tolerance class. For a 7/16"-14 UNC insert requiring H3 / 2B-3B fit, use a spiral-flute tap with bottoming chamfer for blind holes. Ensure the tap matches the insert manufacturer's specifications for proper thread engagement.

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

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