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OSG Extension Tap: M12x1.25 Metric, D6 / 4H-6H, 3 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: M12x1.25 Metric, D6 / 4H-6H, 3 Flute

The OSG Extension Tap (M12x1.25 Metric) is a spiral-flute extension tap for multiple materials, featuring a D6 / 4H-6H tolerance with a modified bottoming chamfer and 3 flutes (MPN 1652006308).

SKU 3G-OTH-311694

Brand
OSG
Item
Extension Tap: M12x1.25 Metric, D6 / 4H-6H, 3 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652006308
Type
D6 / 4H-6H, Modified Bottoming Chamfer
Flute
3
View Full Spec Sheet

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap (M12x1.25 Metric) is a spiral-flute extension tap for multiple materials, featuring a D6 / 4H-6H tolerance with a modified bottoming chamfer and 3 flutes (MPN 1652006308).

Frequently Asked Questions

What is the OSG Extension Tap M12x1.25 used for?

The OSG Extension Tap M12x1.25 is used for threading blind holes in multiple materials, including steel and aluminum. Its spiral-flute design evacuates chips upward, making it ideal for deep-hole tapping. The modified bottoming chamfer allows threads close to the hole bottom, common in automotive and general manufacturing.

What are the specifications of the OSG Extension Tap M12x1.25?

This OSG tap has a metric thread size of M12x1.25, a D6 / 4H-6H tolerance, and a modified bottoming chamfer. It features 3 spiral flutes for chip evacuation and an extended length for deep-hole access. The manufacturer part number is 1652006308.

Where to buy the OSG Extension Tap M12x1.25 worldwide?

You can source the OSG Extension Tap M12x1.25 worldwide through 3G Electric. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time; we supply genuine OSG tooling to customers across multiple industries.

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

Select an OSG extension tap based on thread size, pitch, and hole depth. For M12x1.25 threads, ensure the tap's reach exceeds the hole depth. The D6 / 4H-6H tolerance class fits standard thread gauges. Use a spiral-flute design for blind holes to clear chips. Always match the tap to the workpiece material for optimal 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-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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