OSG Spiral Flute Tap: M2.5x0.45 Metric, D3 / 4H-6H, 2 Flute

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its 2-flute design and modified bottoming chamfer efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications where clean threads close to the hole bottom are required.

This OSG tap has a metric thread size of M2.5x0.45, a D3 / 4H-6H tolerance class, 2 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650003908. It is designed for threading blind holes in steel and stainless steel materials.

3G Electric supplies and delivers this OSG spiral flute tap worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, whether you are in North America, Europe, Asia, or the Middle East.

Select an OSG spiral flute tap based on thread size, pitch, and hole type. For blind holes in steel, choose a modified bottoming chamfer to thread close to the hole bottom. Ensure the tap tolerance class (e.g., D3 / 4H-6H) matches your required thread fit. Always use appropriate cutting fluid for steel.