Fastener Pitch - Metric

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