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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, MPN 2991308) is a general-purpose spiral-flute tap with a D5 / 4H-6H tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this specific…

SKU 3G-OTH-230232

Brand
OSG
Item
Spiral Flute Tap: M8x1 Metric, D5 / 4H-6H, 3 Flute
Part Number
2991308
Category
General Purpose Spiral-Flute Taps
Available to Order
Also known as:2991308OSG
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

OSG
Manufacturer Part Number
2991308
Type
D5 / 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 (M8x1 Metric, MPN 2991308) is a general-purpose spiral-flute tap with a D5 / 4H-6H tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this specific OSG threading tool and delivers it with specialist sourcing support across 14 industrial departments.

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 such as steel, stainless steel, and aluminum. Its spiral design pulls chips upward and out of the hole, preventing clogging and ensuring clean threads. This M8x1 metric tap with a modified bottoming chamfer is ideal for threading close to the bottom of a blind hole.

What are the specifications of the OSG 2991308 tap?

The OSG 2991308 is a spiral flute tap with M8x1 metric thread, D5 / 4H-6H tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for general purpose threading of blind holes in a range of materials. The D5 / 4H-6H designation indicates a precision ground thread form for accurate fit.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps, including the 2991308 spiral flute tap, to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG cutting tools and support your procurement with technical guidance on thread tolerances and material compatibility.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like the OSG 2991308 to evacuate chips upward. Match the tap's thread size (M8x1), tolerance class (D5 / 4H-6H), and chamfer type (modified bottoming) to your hole depth and material. Consult the manufacturer's speed and feed recommendations for optimal thread quality and tool life.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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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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