Optionalsize: isoThreadSizeEnumOptionallength: numberOptionalmodelledThread: booleanOptionalunit: unitOfLengthEnumOptionalframe: Bit.Inputs.Base.FrameOptionalsizeThe thread size, such as M8.
OptionalunitThe unit the fastener is made in and its lengths are read in; the size names a metric thread whatever it is.
OptionalframeWhere it sits: the origin where it bears, as under a head, the normal along its axis away from the part. Left out, the ground, facing +Y.
OptionallengthThe length of the screw from under its head to its tip, in unit.
OptionalmodelledWhen true the threaded length is modelled, as parts.mechanical.machining.iso.thread cuts it, its
faces all named thread; when false the thread is a light cosmetic face.
An ISO 4762 cap screw with a hexagon recess in its round head, for
parts.mechanical.fasteners.iso.socketHeadCapScrewand its twin with face roles: its size, its length, the unit and where its head sits.