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OSG M12x1.75 Spiral-Point Extension Tap - Spiral-Point Extension Taps
OSGSpiral-Point Extension Taps

OSG M12x1.75 Spiral-Point Extension Tap

The OSG Extension Tap (M12x1.75 Metric, MPN 1111801201) is a spiral-point extension tap with a D6 / 4H-6H tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets…

SKU 3G-OTH-313609

Brand
OSG
Item
M12x1.75 Spiral-Point Extension Tap
Category
Spiral-Point Extension Taps
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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
1111801201
Type
D6 / 4H-6H, Plug Chamfer, Black Oxide High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Extension Tap (M12x1.75 Metric, MPN 1111801201) is a spiral-point extension tap with a D6 / 4H-6H tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction. 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 M12x1.75 used for?

The OSG Extension Tap M12x1.75 is used for threading blind or deep holes in metal parts, particularly where standard taps cannot reach. It is common in automotive, aerospace, and general machining applications requiring precise internal threads in hard-to-access locations.

What are the specifications of the OSG Extension Tap M12x1.75?

This OSG tap has a metric thread size of M12x1.75, a D6 / 4H-6H tolerance class, 3 flutes, a plug chamfer, and is made from black oxide high-speed steel. The manufacturer part number is 1111801201. It is a spiral-point extension tap designed for through-hole threading.

Where to buy the OSG Extension Tap M12x1.75 worldwide?

You can source the OSG Extension Tap M12x1.75 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 on this item.

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

Select an OSG extension tap based on thread size (e.g., M12x1.75), material (high-speed steel for general use), flute count (3 flutes for chip evacuation), and reach length. Ensure the tap's tolerance class (D6 / 4H-6H) matches your required thread fit. Consult OSG's technical data for specific depth and material 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-point extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
This OSG spiral-point extension tap is designed for threading in deep or recessed holes. It features a plug chamfer and 3-flute geometry for efficient chip evacuation in through-hole applications. Made from black oxide high-speed steel, it is suitable for threading steel and other materials. Thread size: M12x1.75, tolerance class D6 / 4H-6H
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This OSG spiral-point extension tap is designed for threading in deep or recessed holes. It features a plug chamfer and 3-flute geometry for efficient chip evacuation in through-hole applications. Made from black oxide high-speed steel, it is suitable for threading steel and other materials. Thread size: M12x1.75, tolerance class D6 / 4H-6H
M6x1 metric spiral-point extension tap with D5 / 4H-6H tolerance, plug chamfer, and black oxide high-speed steel construction. Two-flute design for efficient chip evacuation in blind or through holes. Extended length provides access to deep or recessed areas in general machining applications
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M6x1 metric spiral-point extension tap with D5 / 4H-6H tolerance, plug chamfer, and black oxide high-speed steel construction. Two-flute design for efficient chip evacuation in blind or through holes. Extended length provides access to deep or recessed areas in general machining applications
Spiral-point extension tap for threading deep or recessed holes where standard taps cannot reach. M6x1 thread, D5 / 4H-6H tolerance, plug chamfer, black oxide high-speed steel, 2 flutes. Suitable for through or blind holes in steel and cast iron
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Spiral-point extension tap for threading deep or recessed holes where standard taps cannot reach. M6x1 thread, D5 / 4H-6H tolerance, plug chamfer, black oxide high-speed steel, 2 flutes. Suitable for through or blind holes in steel and cast iron
OSG Extension Tap: M8x1.25 Metric, D5 / 4H-6H, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1111800901)
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OSG Extension Tap: M8x1.25 Metric, D5 / 4H-6H, 3 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1111800901)
This OSG spiral-point extension tap is designed for threading blind or deep holes where standard taps cannot reach. It features a D4 / 4H-6H tolerance, plug chamfer, and black oxide high-speed steel construction. The 2-flute spiral-point design pushes chips forward, reducing clogging in through-hole or blind-hole applications in metal parts
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This OSG spiral-point extension tap is designed for threading blind or deep holes where standard taps cannot reach. It features a D4 / 4H-6H tolerance, plug chamfer, and black oxide high-speed steel construction. The 2-flute spiral-point design pushes chips forward, reducing clogging in through-hole or blind-hole applications in metal parts
M8x1.25 metric spiral-point extension tap with D5 / 4H-6H tolerance, plug chamfer, and 3 flutes. Made from black oxide high-speed steel. Used for threading blind or deep holes in metal parts where standard taps cannot reach
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M8x1.25 metric spiral-point extension tap with D5 / 4H-6H tolerance, plug chamfer, and 3 flutes. Made from black oxide high-speed steel. Used for threading blind or deep holes in metal parts where standard taps cannot reach

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Spiral-point extension tap for threading deep or hard-to-reach holes. Made from high-speed steel with a plug chamfer and 3 flutes. Thread size 3/8"-24 UNF, tolerance H3 / 2B-3B. Suitable for blind or through holes in ferrous and non-ferrous materials
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OSG Extension Tap: M5x0.8 Metric, D4 / 4H-6H, 2 Flute, Plug Chamfer, Black Oxide High Speed Steel (MPN 1111800401)
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Spiral-point extension tap with plug chamfer, made from high-speed steel. Features 3 flutes and H3 / 2B-3B tolerance. Designed for threading deep or hard-to-reach holes in metal parts, such as in machining and assembly applications
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High-speed steel spiral-point extension tap with 5/16"-18 UNC thread, H3 / 2B-3B tolerance, plug chamfer, and 2 flutes. Designed for threading blind holes or recessed areas where standard taps cannot reach, suitable for ferrous materials in confined spaces
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High-speed steel spiral-point extension tap with 5/16"-18 UNC thread, H3 / 2B-3B tolerance, plug chamfer, and 2 flutes. Designed for threading blind holes or recessed areas where standard taps cannot reach, suitable for ferrous materials in confined spaces
Spiral-point extension tap with plug chamfer for threading deep or hard-to-reach holes. Made from black oxide high-speed steel with 3 flutes. Thread size 5/16-24 UNF, tolerance H3 / 2B-3B. Suitable for through-hole threading in steel, cast iron, and non-ferrous materials
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This spiral-point extension tap is designed for threading through holes in hard-to-reach locations where standard taps cannot reach. Constructed from black oxide high-speed steel with a plug chamfer and three flutes, it is suitable for threading steel or cast iron. Tolerance class H3 / 2B-3B ensures precise internal threads
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This spiral-point extension tap is designed for threading through holes in hard-to-reach locations where standard taps cannot reach. Constructed from black oxide high-speed steel with a plug chamfer and three flutes, it is suitable for threading steel or cast iron. Tolerance class H3 / 2B-3B ensures precise internal threads
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