Thanks.
This solution would work, but if I Change the RTEX to "heavy hex nut", ISODRAFT will still grab the ID-Number of the bolt, which means I have to create an extra LTAB with imaginary bolts, which have only one length (which will be ignored), which shall be described as nuts and have the RTEX and the ID-Number of the nuts, Point to the SBOL which has only the WASH....
Disadvantage is: I have to take care of material-number for nuts two time: in SPCOM (for "normal" connections) and in DTAB (for nuts which are "stored as" bolts)....
Or maybe I got something wrong.....
I still think, this is a standard case and AVEVA should really deliver a BTYP like FSTUD or so for such a situation ...
And even with a negative length in BTSEs and Zero length for washer I still have a length of the bolt on the iso....maybe because only the nozzle is TAP and not the flange?
And what, if I have a tapped bolt, which must be in the BOM and elsewhere a tapped bolt, which is fixed to the Equipment?