How to Measure Metric Screw Threads

Written by mark kennan
  • Share
  • Tweet
  • Share
  • Email

Metric screws are measured differently than American screws. In addition to using metric units, instead of measuring threads per inch, the metric screws list the distance between the threads. If the threads are measured improperly, you can end up with a screw that will not fit.

Skill level:
Moderately Easy

Other People Are Reading

Things you need

  • Caliper

Show MoreHide

Instructions

  1. 1

    Measure a known distance in millimetres on the screw using the calipers, such as 4 millimetres.

  2. 2

    Count the number of threads in the area you have measured.

  3. 3

    Divide the distance found in Step 1 by the number of threads counted in Step 2 to determine the screw thread distance. For example, if you counted 10 threads in 4 millimetres, the thread count would be 2.5 threads per millimetre.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.