Mach and stud are not the same thing.
MACH is a machine bolt which has a Head usually hexagonal and can be supplied with or without a single nut
A stud has no head and can be supplied with or without a single nut
Studbolt has no head and is usually supplied with 2 nuts.
When it comes to PDMS bolting, try not to think of the BTYP as being relative to a specific type of bolt. Rather think in terms similar to STYP in piping specs.
The difference is that in a BOLTSPEC the BTYPes have an order of priority.
If one side of a joint has a btyp of MACH and the other side has a btyp of STUD Then STUD will take priority over MAC and the bolt with the BTYP STUD in the spec will be used.
I have already posted a paper on bolting on this site. Try to read it and see if that helps a little
Mach and stud are not the same thing.
MACH is a machine bolt which has a Head usually hexagonal and can be supplied with or without a single nut
A stud has no head and can be supplied with or without a single nut
Studbolt has no head and is usually supplied with 2 nuts.
When it comes to PDMS bolting, try not to think of the BTYP as being relative to a specific type of bolt. Rather think in terms similar to STYP in piping specs.
The difference is that in a BOLTSPEC the BTYPes have an order of priority.
If one side of a joint has a btyp of MACH and the other side has a btyp of STUD Then STUD will take priority over MAC and the bolt with the BTYP STUD in the spec will be used.
I have already posted a paper on bolting on this site. Try to read it and see if that helps a little
