OSG Screw Thread Insert STI Tap: Spiral Fute, M2.5x0.45 Metric, D2 / 4H-6H
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, specified as M2.5x0.45 Metric with a D2 / 4H-6H tolerance and 2 flutes (MPN 34500208). 3G Electric sources this genuine industrial…
SKU 3G-OTH-281163
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, specified as M2.5x0.45 Metric with a D2 / 4H-6H tolerance and 2 flutes (MPN 34500208). 3G Electric sources this genuine industrial cutting tool across 14 departments, with specialist expertise in combustion, pumps and controls ensuring accurate sourcing and support.
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 multiple materials before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce threaded holes in softer metals like aluminum or cast iron.
What are the specifications of the OSG STI Tap M2.5x0.45?
The OSG STI Tap has a metric thread size of M2.5x0.45, with a D2 / 4H-6H tolerance class. It features a spiral-flute design with 2 flutes, made from high-speed steel. The manufacturer part number is 34500208, and it is designed for threading multiple materials before insert installation.
Where to buy OSG STI Taps in worldwide?
You can source OSG STI Taps, including the M2.5x0.45 model, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time.
How to select the correct OSG STI Tap for thread inserts?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's internal thread specification. For example, an M2.5x0.45 tap requires a corresponding M2.5x0.45 insert. Ensure the tap tolerance class, such as D2 / 4H-6H, aligns with the desired thread fit for your material.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















