Pset_MechanicalFastenerBolt Properties related to bolt-type fasteners. The properties of a whole set with bolt, washers and nut may be provided. Note, it is usually not necessary to transmit these properties in case of standardized bolts. Instead, the standard is referred to. IfcMechanicalFastener/BOLT IfcMechanicalFastener/BOLT ThreadDiameter Nominal diameter of the thread, if different from the bolt's overall nominal diameter Thread Diameter ThreadLength Nominal length of the thread Thread Length NutsCount Count of nuts to be mounted on one bolt Nuts Count WashersCount Count of washers to be mounted on one bolt Washers Count HeadShape Shape of the bolt's head, e.g. 'Hexagon', 'Countersunk', 'Cheese' Head Shape KeyShape If applicable, shape of the head's slot, e.g. 'Slot', 'Allen' Key Shape NutShape Shape of the nut, e.g. 'Hexagon', 'Cap', 'Castle', 'Wing' Nut Shape WasherShape Shape of the washers, e.g. 'Standard', 'Square' Washer Shape