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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 2990501) is a general-purpose spiral-flute tap in M3.5x0.6 metric size. It features a D4 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your…

SKU 3G-OTH-230346

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
2990501
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 2990501) is a general-purpose spiral-flute tap in M3.5x0.6 metric size. It features a D4 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this OSG tap and delivers it with specialist sourcing support across 14 industrial departments.

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. The spiral flute design evacuates chips upward, preventing clogging and enabling clean threads in deep or blind applications. It is commonly used in automotive, aerospace, and general manufacturing for precision threading.

What are the specifications of the OSG spiral flute tap MPN 2990501?

The OSG spiral flute tap has a metric size of M3.5x0.6 with a D4 / 4H-6H tolerance class. It features 3 flutes and a modified bottoming chamfer for threading close to the bottom of blind holes. The manufacturer part number is 2990501, and it is designed for general-purpose threading.

Where to buy OSG spiral flute taps worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this MPN 2990501 or other OSG threading tools.

How to select the correct OSG spiral flute tap for blind holes?

Select an OSG spiral flute tap based on thread size, pitch, and tolerance class. For blind holes, choose a modified bottoming chamfer to maximize thread depth. Ensure the tap material matches your workpiece—HSS for general use, or coated variants for harder materials. Always verify the D4 / 4H-6H tolerance for fit requirements.

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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Cross-referenced by specification & description
OSG Spiral Flute Tap: M3x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990400)
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OSG Spiral Flute Tap: M3x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990400)
OSG Spiral Flute Tap: M3x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990401)
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OSG Spiral Flute Tap: M3x0.5 Metric, D3 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990401)
OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990600)
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OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990600)
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OSG Spiral Flute Tap: M5x0.8 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990801)
OSG Spiral Flute Tap: M5x0.8 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990808)
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OSG Spiral Flute Tap: M5x0.8 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990808)
OSG Spiral Flute Tap: M6x1 Metric, D5 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2991000)
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