threaded length "None" in Dev. Snaphot: BOLTS_FreeCAD_201506281259_lgpl2.1+

[ghost]

The table referencend for 'Hexagon socket countersunk head screw' in the hex_sockelt.blt which is http://almetal.nl/en/techinfo/soc/sd7991.htm denotes a minimum threaded length (b1). For small diameter bolts (<M2.5) the entry (b1) is 'None', which means the bolt is fully threaded.

However the code uses this value (b1) as(!) the threaded length - which is obviously not correct. Trying to include a model like this consequently gives the Errormessage "Invalid threaded length: None"

So either one corrects the table to be consitent with the evaluation or the method of reading the table has to be changed.

[berndhahnebach]

confirmed with latest BOLTS. https://github.com/boltsparts/BOLTS/commits/b47ae5fb53b4975320867909cfd0de2641f6bf15