Length of Studs

[QAFitz]

What ASME Standard(s) call out the length of a stud? I recollect that somewhere a non-pressure retaining stud is measured end-to-end while a stud used in a pressure retaining application is measured first thread-to-first thread.
What paragraph in what Standard do I find this bit of wisdom?

Thanks in advance.

 

[jamesl]

If you are talking about studs used on ASME flanges, then you can refer to ASME B16.5. The stud lengths are listed in those tables with overall flange dimensions. Appendix D has instruction on how to calculate required bolt lengths.

 

[sjrfc2]

I noticed recently that ASTM F704 was a standard practice document for ASME B16.5 piping flanges.

 

[sjrfc2]

Sorry, the ASTM F704 has applicability beyond the B16.5 flanges to B16.24, B16.1, MSS SP-44, butterfly valves, and (like B16.5) a calc method.

 

[doct9960]

QAFitz,

For stud bolts or continuous thread stud, refer to ASME B18.12 paragraph 3.1.3.5

3.1.3.5 continuous thread stud: threaded from end to end and is often used for flange bolting with two nuts applied.

(a) Type 1: General Purpose Studs. The length of this type of stud is measured from end to end. Threads are UNC-2A or class 6g.

(b) Type 2: Studs for Temperature–Pressure Piping. These studs are made to the dimensional standard requirements of ANSI/ASME B16.5 and have a length that is measured from first thread to first thread, excluding both point lengths.

 

[MJCronin]

"What ASME Standard(s) call out the length of a stud?"

"What paragraph in what Standard do I find this bit of wisdom?"

Is there a bit of attitude revealed here ?????

ASME does not tell you what type of pipe to use...or what diameter ....or what the length of stud should be.

The ASME standards are not prescriptive as the API codes and standards are... I certainly hope that this should be obvious to any and all readers of these fora at this point in time

My opinion only

-MJC