OSG Extension Tap: M20x1.5 Metric, D6 / 4H-6H, 4 Flute
The OSG Extension Tap (M20x1.5 Metric) is a spiral-flute tap with a D6 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer (MPN 1652008508). Designed for threading multiple materials, it is supplied…
SKU 3G-OTH-311737
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The OSG Extension Tap (M20x1.5 Metric) is a spiral-flute tap with a D6 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer (MPN 1652008508). Designed for threading multiple materials, it is supplied as a precision cutting tool for industrial tapping applications.
Frequently Asked Questions
What is an OSG extension tap used for?
An OSG extension tap is used to cut internal threads in hard-to-reach or deep-hole applications. The M20x1.5 metric size with a modified bottoming chamfer allows threading close to the bottom of a blind hole, making it ideal for maintenance, repair, and production across multiple materials.
What are the specifications of the OSG M20x1.5 extension tap?
This OSG extension tap has a M20x1.5 metric thread, D6 / 4H-6H tolerance, 4 flutes, and a modified bottoming chamfer. It is designed for multiple materials and comes with a spiral-flute geometry for efficient chip evacuation. The manufacturer part number is 1652008508.
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 partner across 14 industrial departments, we provide genuine OSG tooling like this M20x1.5 tap to customers in machining, maintenance, and production sectors.
How to select the correct OSG extension tap for deep-hole threading?
Select an OSG extension tap based on thread size, pitch, and chamfer type. For blind holes, a modified bottoming chamfer like this M20x1.5 tap allows threading near the hole bottom. Match the tap tolerance (D6 / 4H-6H) to your required thread class and ensure the extension length reaches the depth needed.
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.
