SoftDraft Bolts2D Imperial
Bolts2D parametrically creates Imperial Bolts/Nuts/Washers in Plan or Elevation views for easy placement in steel details. Dimensional data for the bolts are stored in external ASCII data files which you may add additional dimensional information on bolts or nuts that are unique to your specific application. Default sizes are included in imperial and metric dimensional data files.
Note: “The installer is compatible with Autodesk® AutoCAD® 2012 to 2023 (including other vertical products).”