ASME B18.2.2 Hex Flat Jam Nuts

ASME B18.2.2 Hex Flat Jam Nuts

Nominal Size or Basic Major Dia. of Thread Width Across FlatsF Width Across CornersG Thickness, Flat Jam NutsH1
Basic Max. Min. Max. Min. Basic Max. Min.
ASME B18.2.2 - 1 1⁄8 1.125 111⁄16 1.688 1.631 1.949 1.859 5⁄8 0.655 0.595
ASME B18.2.2 - 1 1⁄4 1.25 17⁄8 1.875 1.812 2.165 2.066 3⁄4 0.782 0.718
ASME B18.2.2 - 1 3⁄8 1.375 21⁄16 2.062 1.994 2.382 2.273 13⁄16 0.846 0.778
ASME B18.2.2 - 1 1⁄2 1.5 21⁄4 2.25 2.175 2.598 2.48 7⁄8 0.911 0.839
  • All dimensions are in inches.
  • Bold type indicates nuts unified dimensionally with British and Canadian Standards.
  • Threads are Unified Coarse-thread series (UNC), Class 2B.