Bolt Head Size Metric

Metric bolt head wrench size.

Bolt head size metric.

Head sizes may differ from what is shown due to differences between metric standards length. Our metric stud bolt to nut table is meant to help determine the correct size bolt or nut for your purpose. The axis of the head shall be located at a true position relative to the axis of the screw shank within a tolerance zone having a diameter equivalent to 6 of the specified maximum head diameter or the specified maximum width across flats of hex and hex flange heads regardless of feature size. The bolt chart provides both us and metric stud sizes.

Metric socket head cap screws size table. The diameter between flat sections on a structural metric bolt s head is always 1 8 times the diameter of its shank. Use the dimensions of your bolt to determine the appropriate size nut. The shank size of bolts affixed into a solid surface can be determined by measuring the head s dimension and dividing by 1 8.

Engineering ansi hardware design data engineering metric hardware design data. Bolt diameter mm head wrench size mm ansi iso din. 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. Drilled head metric hexagon socket head cap screws normally are not available in screw sizes smaller than m3 nor larger than m36.

All tolerances are plus and minus. Us bolts head and wrench sizes hex bolt lag bolt square bolt and heavy hex bolt. All dimensions are in millimeters. An m10 bolt with a 10 mm shank features a hex head that s 16 mm across.

Where l is the total bolt length and d nom is the nominal bolt diameter. The head makes 12 points of contact with a wrench to handle more torque than a socket head or hex head screw. Stainless nuts and bolts. Metric stud bolt to nut size chart.

Unc and unf unified inch screw threads ansi asme b1 1 unified national thread unc coarse series and unf fine series. Large diameter nuts and bolts. Square neck carriage bolts medium strength metric class 8 8. Threaded bolt stress area threaded bolts tensile stress area.

Length is measured from under the head to the end of the bolt note. Definitions of terms are located below the chart. Print this page. T slots and t nuts metric sizes standard metric t slots and t nuts.

Hex bolt head dimensions.