+91 8777212335

info@genuineent.in

81, Netaji Subhas Road, 3rd Floor, Room No. 306,
Century Plaza, Kolkata-700001

+91 8777212335

info@genuineent.in

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Metric Coarse-1

Metric Coarse

+91-8777212335

Short Description

A nib tap is a hand cutting tool used to create internal threads inside a drilled hole, and the metric coarse version follows the standard coarse pitch series defined for metric threads. Unlike fine pitch taps, this style removes more material per pass, which makes threading faster and less likely to bind in softer or medium hardness metals. The square-drive end, known as the nib, lets you turn the tap with a tap wrench for controlled, even cutting. It's the type of tool most machine shops, workshops, and maintenance teams reach for when tapping standard bolt holes in steel, aluminium, or cast iron.

  • Material: High Speed Steel (HSS), chosen for its edge retention during repeated tapping
  • Grades: Available in standard and precision ground tolerance classes
  • Thread Type: ISO metric coarse pitch, one pitch value assigned per diameter
  • Size Range: Commonly stocked from M3 up to M24, with other sizes on request
  • Surface Finish: Bright finish or steam oxide finish depending on the batch
  • Standards: Manufactured in line with ISO 261 and ISO 2 thread specifications
  • Drive Type: Square nib drive compatible with standard tap wrenches

Key Features

  • Cuts standard metric coarse threads in a single pass through most metals
  • Square nib end fits standard tap wrenches for manual operation
  • Flutes designed to clear chips smoothly during cutting
  • Works well in low to medium carbon steel, aluminium, and brass
  • Available in a wide range of sizes to match common bolt diameters
  • Ground threads give a cleaner, more accurate fit with mating fasteners
  • Suitable for both new hole tapping and thread repair work
  • Compact taper on the lead threads helps start the cut straight

Applications of Metric Coarse Taps

  • Tapping new bolt holes in machine frames and equipment housings
  • Repairing damaged or worn threads in existing components
  • Threading holes for flange bolts and structural fasteners
  • General fabrication work in workshops and fitting shops
  • Automotive repair and engine block thread maintenance
  • Tapping mounting holes for brackets and enclosures
  • Producing threaded holes in jigs and fixtures
  • Maintenance work on industrial machinery
  • Small batch manufacturing where a tapping machine isn't practical
  • Plumbing and pipe fitting assemblies that require metric threads

Advantages of Metric Coarse Taps

  • Faster cutting speed compared to fine pitch taps
  • Less prone to thread stripping in softer materials
  • Easier to clear chips due to wider flute spacing
  • Simple to use with just a tap wrench, no machine required
  • Good tolerance to minor hole misalignment during tapping
  • Long service life when used within its intended material range

Why Choose Genuine Enterprises

We manufacture our taps with close attention to thread accuracy, so every tap you receive matches the diameter and pitch it's marked for. Our production process includes checks at each stage, from raw material selection to final grinding, which keeps thread quality consistent across every batch we ship.

 

As a metric coarse supplier in India, we work with fabrication units, maintenance teams, and OEM manufacturers who need taps they can rely on for daily use. Our stock covers a broad size range, so you can usually find the exact tap you need without waiting on custom orders.

1.What does "coarse" mean in a metric coarse tap? 

It refers to the thread pitch, meaning the distance between threads is larger compared to fine pitch taps of the same diameter.

2. Can a metric coarse tap be used on stainless steel? 

Yes, though cutting oil and slower turning speed are recommended to avoid excess wear on the tap.

3. What's the difference between a nib tap and a machine tap? 

A nib tap has a square drive end for hand operation with a tap wrench, while a machine tap is designed to be held in a power tool or tapping machine.

4. Do I need a specific drill bit size before tapping? 

Yes, each tap size has a corresponding recommended drill bit, often called the tap drill size, to leave the right amount of material for threading.

5. How do I know if I need a coarse or fine pitch tap? 

Coarse pitch is the standard choice for most general applications, while fine pitch is used where finer adjustment or greater thread engagement in thin materials is needed.

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