topic non standard thread data in Inventor Forum

topic non standard thread data in Inventor Forum https://forums.autodesk.com/t5/inventor-forum/non-standard-thread-data/m-p/5664780#M373204 Hi Group   I have a part with 46mm o/d and i want to put a male thread on here with like a metric fine 1, 1.5mm or 2mm pitch but in inventor the threads offered in iso metric are only 45mm or 48mm o/d?  why can't I set the diameter to what i want?  or is there another way of doing this?   I did select "metric forming screw threads"  which looks like it is doing the right thing but i 'm not sure what the sizes are referring to,  with size 1.5 the designation is 1.5 x 0.5  is this a 1.5mm pitch 0.5mm deep??   although when i select this option and apply a box pops up saying "create thread feature: problems encountered while executing this command"  and i'm not sure why     regards Adrian   Thu, 04 Jun 2015 16:19:42 GMT safiredesignengineers 2015-06-04T16:19:42Z