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OSG Screw Thread Insert STI Tap: Spiral Point, 3/4"-16 UNF, H3 / 2B-3B, 3 Flute - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG Screw Thread Insert STI Tap: Spiral Point, 3/4"-16 UNF, H3 / 2B-3B, 3 Flute

SKU 3G-OTH-286988

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

OSG
Manufacturer Part Number
12501900
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNF
3/4"-16
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap cuts internal threads in a pre-drilled hole to accept a helical wire thread insert. It is used in metalworking and maintenance applications to repair or strengthen threads in softer materials like aluminum or cast iron.

What are the specifications of the OSG STI Tap 3/4"-16 UNF?

This OSG spiral-point STI tap has a 3/4"-16 UNF thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. The spiral-point design pushes chips forward, making it suitable for through-hole threading. The manufacturer part number is 12501900.

Where to buy OSG STI Tap 12501900 worldwide?

3G Electric supplies and delivers the OSG STI Tap 12501900 to worldwide locations. We handle full logistics and customs clearance, ensuring you receive the correct spiral-point tap for your thread repair or production needs. Contact us for availability and lead time.

How to select the correct OSG STI tap size?

Select an OSG STI tap based on the thread insert's nominal size and pitch, such as 3/4"-16 UNF. The tap must match the insert's internal thread class (H3 / 2B-3B) and be designed for the material being tapped. Use a plug chamfer for general through-hole applications.

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-point 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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