The ISO metric screw thread is the most commonly used type of general-purpose screw thread worldwide. … The “M” designation for metric screws indicates the nominal outer diameter of the screw thread, in millimetres. This is also referred to as the “major” diameter in the information below.
How to ID Metric Threads
- Identify if the thread is parallel or tapered.
- Determine the thread pitch in mm using a thread gauge or calipers (typically 1.0, 1.5, or 2.0, but other sizes do exist)
- Determine the thread O.D (male thread) or I.D (female thread) using calipers.
QC Hydraulics is a manufacturer of metric tube fittings, please feel free to contact our sales team for more details.
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