OSG Spiral Flute Tap: M18x2.5 Metric, OH2 / 6H, 4 Flute
SKU 3G-OTH-230304
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Frequently Asked Questions
What is an OSG spiral flute tap used for?
An OSG spiral flute tap is used for threading blind holes in metal, where chips must be evacuated upward. It is common in automotive, aerospace, and general machining. The M18x2.5 metric size suits medium-to-large threaded fasteners in steel and cast iron.
What are the specifications of the OSG M18x2.5 spiral flute tap?
This OSG tap has a M18x2.5 metric thread, OH2 / 6H tolerance, 4 flutes, and a modified bottoming chamfer. It is designed for blind-hole threading in materials up to medium hardness. The MPN is 11730.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your site. As a global industrial sourcing partner, we provide genuine OSG cutting tools for production and maintenance needs across all regions.
How to select the right spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap with a bottoming or modified bottoming chamfer to thread close to the hole bottom. Match the tap tolerance (e.g., OH2 / 6H) to the required thread class. OSG taps offer consistent geometry for reliable chip evacuation.
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Common applications for OSGOSG Products
3G Electric supplies OSG general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















