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OSG Extension Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG Extension Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute

The OSG Extension Tap (M4x0.7 Metric, MPN 1652001708) is a spiral-flute tap with a D4 / 4H-6H tolerance class and a modified bottoming chamfer. It features 3 flutes and is designed for threading multiple materials…

SKU 3G-OTH-311768

Brand
OSG
Item
Extension Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute
Category
Spiral-Flute Extension Taps for Multiple Materials
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Technical Specifications

OSG
Manufacturer Part Number
1652001708
Type
D4 / 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 (M4x0.7 Metric, MPN 1652001708) is a spiral-flute tap with a D4 / 4H-6H tolerance class and a modified bottoming chamfer. It features 3 flutes and is designed for threading multiple materials. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the OSG Extension Tap M4x0.7 used for?

The OSG Extension Tap M4x0.7 is used for threading blind or deep holes in multiple materials, including steel, stainless steel, and aluminum. Its spiral-flute design helps evacuate chips upward, while the modified bottoming chamfer allows threading close to the bottom of the hole. This tap is ideal for automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG Extension Tap M4x0.7?

The OSG Extension Tap has a metric thread size of M4x0.7, with a D4 / 4H-6H tolerance class. It features 3 flutes and a modified bottoming chamfer. The manufacturer part number is 1652001708. This spiral-flute extension tap is designed for threading multiple materials and is suitable for use with machine tools or manual tapping operations.

Where to buy the OSG Extension Tap M4x0.7 worldwide?

You can source the OSG Extension Tap M4x0.7 (MPN 1652001708) 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. 3G Electric supplies genuine OSG taps for industrial applications.

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

To select the correct OSG extension tap, match the thread size (M4x0.7) and tolerance class (D4 / 4H-6H) to your application. For deep or blind holes, choose a spiral-flute design with a modified bottoming chamfer to reach near the hole bottom. Ensure the tap length provides adequate reach. Consult OSG's technical data for material-specific recommendations.

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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