Spanner or Wrench Size(mm) Load Calculator! Allen Key (mm) Load Calculator! ANSI/ISODINJISANSI/ISO 35.5 4777 58884 61010105 711 81313126 1015, 1617148 1218191710 14212219 1624242214 1827 20303017 243619 ANSI B18.2.3.9M Metric Heavy Hex Flange Screws ...