Definitions of terms are located below the chart.
Bolt head size chart metric.
Metric hex bolt diameters and thread pitches mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220.
Metric stud bolt to nut size chart.
Head sizes may differ from what is shown due to differences between metric standards length.
The bolt chart provides both us and metric stud sizes.
Use the dimensions of your bolt to determine the appropriate size nut.
Us bolts head and wrench sizes hex bolt lag bolt square bolt and heavy hex bolt us hex bolts inches ansi asme b18 2 1 dimensions of hex bolts imperial units us hex bolts metric ansi asme b18 2 3m dimensions of hex bolts metric units.
Bolt diameter mm head wrench size mm ansi iso din.
Our metric stud bolt to nut table is meant to help determine the correct size bolt or nut for your purpose.
Length is measured from under the head to the end of the bolt note.
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The chart below shows metric bolt conversions and din numbers for fasteners.