Taps & Dies

Popular Special Taps (Metrics)

WESTport manufactures Popular Special Metric Taps for ISO metric threading applications. Available in standard popular sizes and custom configurations for production machining, repair, maintenance, and OEM manufacturing.

Why WESTport?

  • Custom-ground to your exact specs
  • All thread standards: UNC, Metric, NPT, ACME, API
  • HSS, Cobalt, Powder Metal, Carbide options
  • Made in USA — 30+ years of precision manufacturing
  • Same-day quoting on standard requests
  • Matched tap & die sets available
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Call for Quote

To order, contact us with the part number and your desired quantity.

Size
Style
Chamfer

Part #:83144

Features

  • Popular ISO metric thread sizes
  • Precision-ground thread geometry
  • High-Speed Steel (HSS), cobalt, and powdered metal options
  • Standard and modified metric pitches
  • Excellent dimensional accuracy
  • Long tool life
  • Premium wear-resistant coatings available
  • CNC and manual machining applications
  • Custom metric taps available upon request
More Details View full details

Available Sizes & Part Numbers

SizeStyleChamferSKUPrice
M36X4 6FL TAP Plug 83521 Call for Quote
M36X4 6FL TAP Bottom 83522 Call for Quote
M36X4 6H D9 4FL SPPT Default 83171 Call for Quote
M36X4 6H D9 4FL TAP Taper 83132 Call for Quote
M36X4 6H D9 4FL TAP Plug 83133 Call for Quote
M36X4 6H D9 4FL TAP Bottom 83134 Call for Quote
M39X3 6H D8 6FL TAP Taper 83136 Call for Quote
M39X3 6H D8 6FL TAP Plug 83137 Call for Quote
M39X3 6H D8 6FL TAP Bottom 83138 Call for Quote
M39X3 6H D9 6FL SPPT Default 83172 Call for Quote
M39X4 6H D9 6FL SPPT Default 83173 Call for Quote
M39X4 6H D9 6FL TAP Taper 83140 Call for Quote
M39X4 6H D9 6FL TAP Plug 83141 Call for Quote
M39X4 6H D9 6FL TAP Bottom 83142 Call for Quote
M40X1.5 6H D6 6FL TAP Taper 83480 Call for Quote
M40X1.5 6H D6 6FL TAP Plug 83481 Call for Quote
M40X1.5 6H D6 6FL TAP Bottom 83482 Call for Quote
M42X1.5 6H D6 6FL TAP Taper 83495 Call for Quote
M42X1.5 6H D6 6FL TAP Plug 83496 Call for Quote
M42X1.5 6H D6 6FL TAP Bottom 83497 Call for Quote
M42X4.5 6H D6 6FL TAP Taper 83490 Call for Quote
M42X4.5 6H D6 6FL TAP Plug 83491 Call for Quote
M42X4.5 6H D6 6FL TAP Bottom 83492 Call for Quote
M42X4.5 6FL TAP Taper 83523 Call for Quote
M42X4.5 6FL TAP Plug 83524 Call for Quote
M42X4.5 6FL TAP Bottom 83525 Call for Quote
M42X4.5 6FL TAP Taper (83526) 83526 Call for Quote
M42X4.5 6FL TAP Plug (83527) 83527 Call for Quote
M42X4.5 6FL TAP Bottom (83528) 83528 Call for Quote
M42X4.5 6FL TAP Taper (83530) 83530 Call for Quote
M42X4.5 6FL TAP Plug (83531) 83531 Call for Quote
M42X4.5 6FL TAP Bottom (83532) 83532 Call for Quote
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Product Details

WESTport's Popular Special Metric Taps provide manufacturers with quick access to many of the most commonly requested metric thread sizes while maintaining the flexibility to satisfy specialized production requirements. Designed for machine shops, OEMs, maintenance departments, tool rooms, and production facilities, these taps bridge the gap between standard catalog tooling and fully custom thread cutting solutions. Whether you're replacing an existing tool, supporting production, or sourcing an uncommon metric size, WESTport offers precision-manufactured Metric Special Taps built for consistent performance and long service life.

Manufactured from premium High-Speed Steel (HSS), cobalt, powdered metal, and other high-performance tool materials, every WESTport Metric Special Tap is precision ground to produce accurate ISO metric internal threads with excellent surface finish and dimensional consistency. Available in a wide range of popular metric diameters and pitches, these taps are suitable for machining carbon steel, alloy steel, stainless steel, aluminum, brass, bronze, cast iron, engineering plastics, and many specialty materials. Optional premium coatings are available to reduce friction, improve wear resistance, and extend tool life in demanding production environments.

Metric threads are used throughout virtually every manufacturing industry, making dependable tooling essential for maintaining production efficiency and product quality. WESTport understands that downtime caused by unavailable or poorly performing taps can be costly. Our Popular Special Metric Taps are designed to provide customers with readily available solutions for many frequently requested metric thread sizes while also offering the capability to manufacture modified dimensions, special thread lengths, custom chamfers, left-hand versions, and other application-specific configurations when required.

Whether you're producing automotive components, aerospace hardware, hydraulic equipment, medical devices, industrial machinery, or precision mechanical assemblies, WESTport works closely with customers to recommend the proper tap for the material, machining process, and thread specification. Since 1989, WESTport has built its reputation on supplying precision quality assurance products, custom thread tooling, calibration services, and technical support to manufacturers throughout North America and around the world.

Benefits

  • Covers many commonly requested metric thread sizes
  • Produces accurate, repeatable internal threads
  • Reduces production downtime
  • Excellent machining performance across a wide range of materials
  • Fast solution for frequently used metric applications
  • Custom modifications available when needed
  • Reliable performance for prototype and production machining

Typical Applications

  • Automotive manufacturing
  • Aerospace components
  • Medical device manufacturing
  • Industrial machinery
  • Hydraulic equipment
  • Electronics
  • Tool and die manufacturing
  • Maintenance and repair operations
  • OEM production
  • Precision machine shops

Technical Information

WESTport Popular Special Metric Taps are manufactured to produce precision ISO metric internal threads in a broad range of commonly requested sizes and pitches. When an application requires a modified diameter, special pitch, unique chamfer, extended thread length, or other engineering change, WESTport can manufacture a custom version built to your specifications. This combination of readily available popular sizes and custom manufacturing capabilities allows customers to obtain tooling that matches both standard production requirements and specialized applications.

Why Choose WESTport?

Since 1989, WESTport has supplied manufacturers worldwide with precision thread gages, metrology equipment, hardness testing products, calibration services, and custom threading solutions. Our experienced team understands the demands of modern manufacturing and provides customers with precision tooling engineered for accuracy, durability, and dependable performance. Whether you need a popular metric size or a custom-engineered solution, WESTport delivers the technical expertise, responsive customer service, and quality manufacturers have trusted for more than 35 years.

Have a Custom or Special Application?

Need a tap or die ground to a non-standard spec, print, or unique thread form? Submit a custom quote request and our engineering team will review it.

Request a Custom Quote