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OSG Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B, 3 Flute - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

OSG Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for #6-40 UNF threads, featuring a bottoming chamfer and 3 flutes. It is specified with H2 / 2B-3B tolerance (MPN 10800300).

SKU 3G-OTH-273419

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B, 3 Flute
Category
Spiral-Flute STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
10800300
Type
#6-40 UNF, H2 / 2B-3B, Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for #6-40 UNF threads, featuring a bottoming chamfer and 3 flutes. It is specified with H2 / 2B-3B tolerance (MPN 10800300).

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap is used to cut internal threads in a pre-drilled hole before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce threads in softer materials like aluminum or cast iron.

What are the specifications of the OSG #6-40 UNF STI Tap?

This OSG STI tap has a #6-40 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is designed for spiral-flute geometry to evacuate chips upward. The manufacturer part number is 10800300. It is suitable for threading holes before inserting screw thread inserts.

Where to buy OSG STI taps in worldwide?

You can source OSG STI 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 time on the OSG #6-40 UNF STI tap (MPN 10800300).

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

To select the correct OSG STI tap, match the tap thread size and pitch to the insert you plan to install. For a #6-40 UNF insert, use this STI tap with H2 / 2B-3B tolerance. Ensure the tap has a bottoming chamfer if threading a blind hole. Always follow the insert manufacturer’s recommended drill size.

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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