Metric Thread Pitch Chart

Coarse Fine
DiameterPitch Diameter Pitch
1st choice2nd choice–1st choice2nd choice1st choice2nd choice
M2—0.4————
M2.5—0.45————
M3—0.5————
M4—0.7————
M5—0.8————
M6—1————
— M71————
M8—1.25M8—1—
M10—1.5M10—1.251
M12—1.75M12—1.251.5
—M142M141.5—
M16—2M16—1.5—
—M182.5 M20M181.52
M20—2.5 —1.52
—M222.5M221.52
M24—3M24—2—
—M273M272—
M30—3.5M30—2—
—M333.5————
M36—4————
—M394————
M33—4.5————
—M454.5————
M39—5————
—M525————
M56—5.5————
Atlanta Rod and Manufacturing
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