OSG Spiral Flute Tap: M3.5x0.6 Metric, D4 / 4H-6H, 3 Flute
The OSG Spiral Flute Tap (MPN 2990508) is a general-purpose spiral-flute tap in M3.5x0.6 metric size, featuring a D4 / 4H-6H tolerance class, 3-flute design, and modified bottoming chamfer. This tap is designed for…
SKU 3G-OTH-230042
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Product Description
The OSG Spiral Flute Tap (MPN 2990508) is a general-purpose spiral-flute tap in M3.5x0.6 metric size, featuring a D4 / 4H-6H tolerance class, 3-flute design, and modified bottoming chamfer. This tap is designed for threading applications requiring precise chip evacuation and thread accuracy.
Frequently Asked Questions
What is the OSG spiral flute tap M3.5x0.6 used for?
This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. Its 3-flute design and modified bottoming chamfer allow chip evacuation upward, making it ideal for general-purpose tapping in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap MPN 2990508?
The OSG spiral flute tap has a metric size of M3.5x0.6, a D4 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer. It is a general-purpose tap suitable for threading blind holes. The manufacturer part number is 2990508.
Where to buy OSG taps in worldwide?
You can source OSG taps, including the spiral flute tap MPN 2990508, through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times.
How to select the correct OSG tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG M3.5x0.6 model. The spiral flutes push chips upward, preventing clogging at the hole bottom. Ensure the tap's thread tolerance (D4 / 4H-6H) matches your required fit class. Use proper cutting fluid and follow manufacturer speed/feed recommendations.
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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.















