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OSG Spiral Flute Tap: M8x1 Metric, D5 / 4H-6H, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: M8x1 Metric, D5 / 4H-6H, 3 Flute

The OSG Spiral Flute Tap (M8x1 Metric) is a general-purpose spiral-flute tap with a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer (MPN 2991301). Designed for threading blind holes, it…

SKU 3G-OTH-229993

Brand
OSG
Item
Spiral Flute Tap: M8x1 Metric, D5 / 4H-6H, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2991301
Type
D5 / 4H-6H, Modified Bottoming Chamfer
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (M8x1 Metric) is a general-purpose spiral-flute tap with a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer (MPN 2991301). Designed for threading blind holes, it combines OSG's precision geometry with a spiral-flute design to efficiently evacuate chips during operation.

Frequently Asked Questions

What is the OSG spiral flute tap M8x1 used for?

The OSG spiral flute tap M8x1 is used for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, preventing clogging. It is ideal for general-purpose tapping in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG spiral flute tap M8x1?

The OSG spiral flute tap has an M8x1 metric thread, a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2991301. It is designed for precise threading in blind holes.

Where to buy the OSG spiral flute tap M8x1 worldwide?

You can source the OSG spiral flute tap M8x1 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

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

For blind holes, choose a spiral flute tap like the OSG M8x1 with a modified bottoming chamfer. This design allows threading close to the hole bottom while evacuating chips upward. Ensure the tap's tolerance class (e.g., D5 / 4H-6H) matches your thread 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
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OSG Spiral Flute Tap: M5x0.8 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990800)
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OSG Spiral Flute Tap: M5x0.8 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2990808)
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