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
Need installation or engineering help?
Ask a question
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 OSGOSG 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.















