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OSG Extension Tap: M20x2.5 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: M20x2.5 Metric, D7 / 4H-6H, 3 Flute, Plug Chamfer

SKU 3G-OTH-402439

Brand
OSG
Item
Extension Tap: M20x2.5 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
1653008708
Type
D7 / 4H-6H, Plug Chamfer, V Coated Powdered Metal
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is an OSG extension tap used for?

An OSG extension tap is used to cut internal threads in deep or hard-to-reach holes. The M20x2.5 metric size with plug chamfer and V coated powdered metal construction handles multiple materials including steel and stainless steel, providing thread accuracy to D7 / 4H-6H tolerance.

What are the specifications of the OSG M20x2.5 extension tap?

This OSG extension tap has M20x2.5 metric threads, 3 flutes, plug chamfer, and a D7 / 4H-6H tolerance class. It is made of V coated powdered metal for wear resistance. The manufacturer part number is 1653008708.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide. We handle full logistics and customs clearance to deliver genuine industrial tooling to your facility. Contact us for pricing and lead time on the M20x2.5 metric tap or other OSG thread-cutting tools.

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

Select an OSG extension tap based on thread size, material, and hole depth. For M20x2.5 metric threads in steel, use a plug chamfer with 3 flutes. The D7 / 4H-6H tolerance ensures proper fit. Always match tap coating to workpiece material for best tool life.

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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