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OSG Spiral Flute Tap: M8x1.25 Metric, D5 / 4H-6H, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: M8x1.25 Metric, D5 / 4H-6H, 3 Flute

The OSG Spiral Flute Tap is a general-purpose spiral-flute tap in M8x1.25 Metric, featuring a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer (MPN 2991408). 3G Electric interprets demand and…

SKU 3G-OTH-230281

Brand
OSG
Item
Spiral Flute Tap: M8x1.25 Metric, D5 / 4H-6H, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Payment
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Technical Specifications

OSG
Manufacturer Part Number
2991408
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 is a general-purpose spiral-flute tap in M8x1.25 Metric, featuring a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer (MPN 2991408). 3G Electric interprets demand and delivers this OSG tap across 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in materials like steel and aluminum. Its spiral design pushes chips upward, preventing clogging and ensuring clean threads. This M8x1.25 metric tap with a modified bottoming chamfer is ideal for general-purpose machining where chip evacuation is critical.

What are the specifications of the OSG spiral flute tap M8x1.25?

This OSG tap has a metric M8x1.25 thread size, a D5 / 4H-6H tolerance class, 3 flutes, and a modified bottoming chamfer. It is designed for blind hole threading and is suitable for general-purpose applications. The manufacturer part number is 2991408.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine OSG cutting tools like the M8x1.25 spiral flute tap to any location. Contact us for pricing and lead time on your order.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG M8x1.25 model, which pushes chips upward. Ensure the chamfer type matches your hole depth—modified bottoming for shallow holes. Match the thread tolerance (D5 / 4H-6H) to your material and application requirements for optimal thread quality.

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: M8x1.25 Metric, D5 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 2991401)
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