The pitch of a fastener refers to the distance between threads. This guide explains the different pitches available at different sizes of metric fastener.
Diameter | Metric Coarse Pitch (mm) | Metric Fine Pitch (mm) |
---|---|---|
M0.3 | 0.08 | - |
M0.35 | 0.09 | - |
M0.4 | 0.1 | - |
M0.45 | 0.1 | - |
M0.5 | 0.125 | - |
M0.55 | 0.125 | - |
M0.6 | 0.15 | - |
M0.7 | 0.175 | - |
M0.8 | 0.2 | - |
M0.9 | 0.225 | - |
M1 | 0.25 | 0.2 |
M1.1 | 0.25 | 0.2 |
M1.2 | 0.25 | 0.2 |
M1.4 | 0.3 | 0.2 |
M1.6 | 0.35 | 0.2 |
M1.8 | 0.35 | 0.2 |
M2 | 0.4 | 0.25 |
M2.2 | 0.45 | 0.25 |
M2.5 | 0.45 | 0.35 |
M3 | 0.5 | 0.35 |
M3.5 | 0.6 | 0.35 |
M4 | 0.7 | 0.5 |
M4.5 | 0.75 | 0.5 |
M5 | 0.8 | 0.5 |
M5.5 | - | 0.5 |
M6 | 1 | 0.75 |
M7 | 1 | 0.75 |
M8 | 1.25 | 1 |
M9 | 1.25 | 1 |
M10 | 1.5 | 1.25 |
M11 | 1.5 | 1 |
M12 | 1.75 | 1.25 |
M14 | 2 | 1.5 |
M15 | - | 1.5 |
M16 | 2 | 1.5 |
M17 | - | 1.5 |
M18 | 2.5 | 1.5 |
M20 | 2.5 | 2 |
M22 | 2.5 | 2 |
M24 | 3 | 2 |
M25 | - | 2 |
M26 | - | 1.5 |
M27 | 3 | 2 |
M28 | - | 2 |
M30 | 3.5 | 2 |
M32 | - | 2 |
M33 | 3.5 | 2 |
M35 | - | 1.5 |
M36 | 4 | 3 |
M38 | - | 1.5 |
M39 | 4 | 3 |
M40 | - | 3 |
M42 | 4.5 | 4 |
M45 | 4.5 | 4 |
M48 | 5 | 4 |
M50 | - | 3 |
M52 | 5 | 4 |
M55 | - | 4 |
M56 | 5.5 | 4 |
M58 | - | 4 |
M60 | 5.5 | 4 |
M62 | - | 4 |
M64 | 6 | 4 |
M65 | - | 4 |
M68 | 6 | 4 |
M70 | 6 | 4 |
M72 | 6 | 4 |
M75 | - | 4 |
M76 | 6 | 4 |
M78 | - | 2 |
M80 | 6 | 4 |
M82 | - | 2 |
M85 | 6 | 4 |
M90 | 6 | 4 |