Bolt Dimensions

Some basic but useful bolt information:

Basic Dimensions

A more comprehensive view:

dwg1045-20130217-metric-bolt-dimensions

Which is also available as a PDF or SVG document.

Metric

Size Pitch Drill E A B
M3 0.5 2.5 3 5.5 2.5
M4 0.7 3.3 4 7 3
M5 0.8 4.2 5 8 4
M6 1 5 6 10 5
M8 1.25 6.8 8 13 6
M8F 1 7 8 13 6
M10 1.5 8.5 10 17 8
M10F 1.25 8.75 10 17 8
M10SF 1 9 10 17 8
M12 1.75 10.25 12 19 10
M12F 1.5 10.5 12 19 10
M12SF 1.25 10.75 12 19 10

Unified Bolts

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