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DIN 931 Hexagon head bolts Standard Dimensions, Technical Data and Size Chart Data Table

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DIN 931 Hexagon head bolts Standard Dimensions, Technical Data and Size Chart Data Table
  • Steel: 8.8,10.9,12.9
  • Stainless: A 2

Equivalent norms:

  • ISO 4014
  • CSN 21101
  • PN 82101
  • UNI 5737
  • EU 24014

Available Finish:

  • Black
  • Bright Zinc
  • Hot Dip Galvanized

Terminology and Measurements

  • l – Length of Bolt
  • d – The Nominal Diameter of the Thread
  • k – Head Height
  • e – The Diameter of the Circumscribed Circle
  • s – Head Width
  • a1 – Length Undercut
  • dp – Diameter of the Ejector
  • r – Head Radius
  • k´ – Minimum Size of the Head on the Key
Thread size dpkcrseb
min.max.DIN 931ISO 4014DIN 931ISO 4014(L≤125)(125(L>200)
M30.520.150.40.15.5166.0117.771218-
M40.72.80.150.40.27187.6620.031420-
M50.83.50.150.50.28218.7923.361622-
M6140.150.50.25101011.0511.051824-
M81.255.30.150.60.4131314.3814.382228-
M101.56.40.150.60.4171718.918.9263245
M121.757.50.150.60.6191921.121.1303649
M1428.80.150.60.6222224.4924.49344053
M162100.20.80.6242426.7526.75384457
M182.511.50.20.80.6272730.1430.14424861
M202.512.50.20.80.8303433.5337.72465265
M222.5140.20.80.8323238.8538.85505669
M243150.20.80.8363639.9839.98546073
M273170.20.81414145.245.2606679
M303.518.70.20.81464650.8550.85667285
M36422.50.20.81555560.7960.79-8497
M424.5260.311.2656571.371.3-96109
M485300.311.6757582.682.6-108121
M565.5350.312858593.5693.56--137
M646400.3129595104.9104.9--153