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OSG Extension Tap: M18x2.5 Metric, D7 / 4H-6H, 3 Flute, Plug Chamfer - Spiral-Point Extension Taps for Multiple Materials
OSGSpiral-Point Extension Taps for Multiple Materials

OSG Extension Tap: M18x2.5 Metric, D7 / 4H-6H, 3 Flute, Plug Chamfer

The OSG Extension Tap: M18x2.5 Metric is a spiral-point extension tap for multiple materials, featuring a D7 / 4H-6H tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes (MPN 1653008308).

SKU 3G-OTH-402453

Brand
OSG
Item
Extension Tap: M18x2.5 Metric, D7 / 4H-6H, 3 Flute, Plug Chamfer
Category
Spiral-Point Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1653008308
Type
D7 / 4H-6H, Plug Chamfer, V Coated Powdered Metal
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap: M18x2.5 Metric is a spiral-point extension tap for multiple materials, featuring a D7 / 4H-6H tolerance, plug chamfer, V coated powdered metal construction, and 3 flutes (MPN 1653008308).

Frequently Asked Questions

What is the OSG Extension Tap M18x2.5 used for?

The OSG Extension Tap M18x2.5 is a spiral-point tap designed for threading blind or through holes in multiple materials, including steel and cast iron. Its extended reach allows access to deep or recessed areas. The V coating and powdered metal construction improve wear resistance and chip evacuation in production environments.

What are the specifications of the OSG Extension Tap M18x2.5?

This OSG tap has a metric thread size of M18x2.5, a D7 / 4H-6H tolerance class, 3 flutes, and a plug chamfer. It features a V coating on powdered metal. The manufacturer part number is 1653008308. It is designed for threading multiple materials with a spiral-point geometry for efficient chip control.

Where to buy the OSG Extension Tap M18x2.5 worldwide?

You can source the OSG Extension Tap M18x2.5 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. We supply genuine OSG tooling for industrial applications.

How to select the correct OSG extension tap for deep hole threading?

Select an OSG extension tap based on thread size, pitch, and material. For M18x2.5 threads, ensure the tap has a plug chamfer and spiral-point design for chip evacuation. The D7 / 4H-6H tolerance class fits standard thread classes. Verify the reach length matches your application depth. Consult OSG technical data for material-specific speeds and feeds.

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 spiral-point extension taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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