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OSG Spiral Flute Tap: M3.5x0.6 Metric, D4 / 4H-6H, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

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

Brand
OSG
Item
Spiral Flute Tap: M3.5x0.6 Metric, D4 / 4H-6H, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2990508
Type
D4 / 4H-6H, Modified Bottoming Chamfer
Flute
3

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG 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.

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