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OSG Extension Tap: M4.5x0.75 Metric, D4 / 6H, 3 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: M4.5x0.75 Metric, D4 / 6H, 3 Flute

SKU 3G-OTH-311717

Brand
OSG
Item
Extension Tap: M4.5x0.75 Metric, D4 / 6H, 3 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652001908
Type
D4 / 6H, Modified Bottoming Chamfer
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 for threading blind holes in hard-to-reach areas of metal parts. Its extended reach and spiral-flute design clear chips efficiently, making it ideal for machining, automotive, and general manufacturing applications where standard taps cannot access the workpiece.

What are the specifications of the OSG M4.5x0.75 extension tap?

This OSG extension tap has a metric thread size of M4.5x0.75, with a D4 / 6H tolerance class. It features 3 flutes and a modified bottoming chamfer, allowing threading close to the bottom of blind holes. The manufacturer part number is 1652001908.

Where to buy OSG extension taps worldwide?

3G Electric supplies OSG extension taps worldwide, handling full logistics and customs clearance for global delivery. As a sourcing specialist across 14 industrial departments, we provide genuine OSG tooling to support your machining operations anywhere.

How to select the right OSG extension tap for a job?

Select an OSG extension tap based on thread size, pitch, and chamfer type. For blind holes, choose a modified bottoming chamfer like this D4 / 6H tap. Match the flute count and material coating to your workpiece—3-flute designs suit general-purpose threading in steel and aluminum.

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-flute 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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