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OSG Extension Tap: M12x1.75 Metric, D6 / 4H-6H, 3 Flute, Plug Chamfer - Spiral-Point Extension Taps
OSGSpiral-Point Extension Taps

OSG Extension Tap: M12x1.75 Metric, D6 / 4H-6H, 3 Flute, Plug Chamfer

The OSG Extension Tap (M12x1.75 Metric) is a spiral-point extension tap with a D6 / 4H-6H tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction (MPN 1111801301). 3G Electric interprets…

SKU 3G-OTH-313551

Brand
OSG
Item
Extension Tap: M12x1.75 Metric, D6 / 4H-6H, 3 Flute, Plug Chamfer
Category
Spiral-Point Extension Taps
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Technical Specifications

OSG
Manufacturer Part Number
1111801301
Type
D6 / 4H-6H, Plug Chamfer, Black Oxide High Speed Steel
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Extension Tap (M12x1.75 Metric) is a spiral-point extension tap with a D6 / 4H-6H tolerance, 3 flutes, plug chamfer, and black oxide high-speed steel construction (MPN 1111801301). 3G Electric interprets demand and sources this genuine industrial tool across 14 departments — with specialist depth in combustion, pumps, and controls — ensuring you get the right answer, not just a catalog.

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 extended shank allows threading in recessed areas, such as engine blocks or hydraulic manifolds. This M12x1.75 metric tap with plug chamfer and 3-flute design is suited for through-hole threading in steel and other materials.

What are the specifications of the OSG M12x1.75 extension tap?

This OSG extension tap has a metric thread size of M12x1.75, a D6 / 4H-6H tolerance class, 3 flutes, and a plug chamfer. It is made from black oxide high-speed steel (HSS) for wear resistance. The manufacturer part number is 1111801301, and it is a spiral-point extension tap designed for through-hole threading.

Where to buy OSG extension taps worldwide?

You can source OSG extension taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the M12x1.75 extension tap (MPN 1111801301). We supply genuine OSG tooling to industrial buyers globally.

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., M12x1.75) and pitch to your application. Choose a plug chamfer for through-holes and a spiral-point design for chip evacuation. The D6 / 4H-6H tolerance ensures precise thread fit. Verify shank length reaches the threading depth. 3G Electric can help source the right tap for your job.

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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