OSG Spiral Flute Tap: M18x2.5 Metric, D7 / 4H-6H, 4 Flute
The OSG Spiral Flute Tap is a metric M18x2.5 spiral-flute tap for steel and stainless steel, featuring a D7 / 4H-6H tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1650002308).
SKU 3G-OTH-218782
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Product Description
The OSG Spiral Flute Tap is a metric M18x2.5 spiral-flute tap for steel and stainless steel, featuring a D7 / 4H-6H tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1650002308).
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 OSG spiral flute tap M18x2.5 used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 4-flute design efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications requiring precise internal threads.
What are the specifications of OSG spiral flute tap M18x2.5?
This OSG tap has a metric thread size of M18x2.5, a D7 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650002308. It is designed for threading steel and stainless steel in blind-hole applications.
Where to buy OSG spiral flute tap M18x2.5 worldwide?
3G Electric supplies and delivers this OSG spiral flute tap worldwide. As a global industrial sourcing partner, we handle full logistics and customs clearance to ensure the tap reaches your facility. Contact us for availability and lead time on this M18x2.5 threading tool.
How to select the right spiral flute tap for steel?
For steel and stainless steel blind holes, choose a spiral flute tap like this OSG M18x2.5 with a modified bottoming chamfer. Ensure the thread tolerance (D7 / 4H-6H) matches your application. Use proper cutting fluid and machine speed per OSG recommendations to achieve clean threads and long tool life.
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3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













