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OSG M20x1 Spiral-Flute Extension Tap - Spiral-Flute Extension Taps for Multiple Materials
OSGSpiral-Flute Extension Taps for Multiple Materials

OSG M20x1 Spiral-Flute Extension Tap

OSG Spiral-Flute Extension Taps for Multiple Materials.

SKU 3G-OTH-311732

Brand
OSG
Item
M20x1 Spiral-Flute Extension Tap
Category
Spiral-Flute Extension Taps for Multiple Materials
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
1652008408

Technical Documents

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

Product Description

OSG Spiral-Flute Extension Taps for Multiple Materials.

Frequently Asked Questions

What is the OSG extension tap M20x1 used for?

The OSG extension tap M20x1 is used for threading blind or deep holes in multiple materials, including steel, stainless steel, and aluminum. Its spiral-flute design evacuates chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. The D5 / 4H-6H tolerance ensures precise fit for metric fasteners.

What are the specifications of the OSG extension tap M20x1?

The OSG extension tap M20x1 has a metric thread size of M20 with a 1 mm pitch, a D5 / 4H-6H tolerance class, 4 flutes, and a modified bottoming chamfer. The manufacturer part number is 1652008408. It is designed for threading multiple materials and features a spiral-flute geometry for chip evacuation in deep-hole applications.

Where to buy the OSG extension tap M20x1 worldwide?

You can source the OSG extension tap M20x1 worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply genuine OSG tooling for manufacturing and maintenance operations.

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

To select the correct OSG extension tap, match the thread size (e.g., M20x1) and tolerance class (D5 / 4H-6H) to your application. For deep holes, choose a spiral-flute design with a modified bottoming chamfer to cut threads near the hole bottom. Ensure the tap length provides sufficient reach. OSG offers various flute counts and coatings for material-specific performance.

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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This OSG spiral-flute extension tap is designed for threading multiple materials in hard-to-reach or deep-hole applications. With a M20x1.5 metric thread, D6 / 4H-6H tolerance, 4 flutes, and a modified bottoming chamfer, it enables threading close to the bottom of blind holes. The spiral-flute geometry facilitates efficient chip evacuation during operation
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This OSG spiral-flute extension tap is designed for threading multiple materials in hard-to-reach or deep-hole applications. With a M20x1.5 metric thread, D6 / 4H-6H tolerance, 4 flutes, and a modified bottoming chamfer, it enables threading close to the bottom of blind holes. The spiral-flute geometry facilitates efficient chip evacuation during operation
OSG Extension Tap: M20x2 Metric, D7 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1652008608)
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Spiral-flute extension tap for threading blind or deep holes in multiple materials. M20x2.5 metric thread with D7 / 4H-6H tolerance class. Modified bottoming chamfer allows threading close to hole bottom. 4 spiral flutes for upward chip evacuation
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Spiral-flute extension tap for threading blind or deep holes in multiple materials. M20x2.5 metric thread with D7 / 4H-6H tolerance class. Modified bottoming chamfer allows threading close to hole bottom. 4 spiral flutes for upward chip evacuation
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Spiral-flute extension tap for threading blind holes in multiple materials. M18x1 thread size, D5 / 4H-6H tolerance class, 4-flute design with modified bottoming chamfer. Chip evacuation upward suits deep-hole tapping applications
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