I am struggling with the ASME B16.5 code and the specified stud-bolt length that is taken into account in the tables (7, 10, 13, 15, 17, 19 and 21).
If you calculate the stud-bolt length according the "guidelines for stud-bolt calculation" for a NPS 24 Class 150 welding neck flange, the stud-bolt length should be 7.45in.
When I look in the ASME B16.5 Table7 the length is 6.75in this is 0.7in difference with the ASME B16.5.
What are the required number of free threads? As far as I am aware from bolt size 1in and up the number of threads per inch is the same and size
S is fixed. If you keep calculating with
S = 1/3 bolt diameter the number of free threads will only increase with no use?