aggieengineerrmb
Mechanical
- May 27, 2003
- 28
What are some well accepted standards for industrial and oilfield equipment (pressure containing vessels) for thread engagement of HHCS's. In this particular case, I have a 1/2-13 Grade B7 (105 KSI yield) HHCS threaded into a cast steel (WCB with 40 KSI yield) part. How far should the thread engage into the part to insure the threads will not pull out under stress? Ideally, I'd like the HHSC to fail under tensile stress before the threads pull out of the mating body surface.