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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.

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 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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