Appendix b recommended fastener torques 28 appendix c bolt standard inch unit thread specification examples .4375 fig. 6 common callout symbols
Tables are 8 threads per inch, commonly shoulder torques for buttress are referenced in practices for round and buttress thread casing, sizes 16”,
3 1/2 * . changed from 2 7/16", may 1979 (api). 4 ** thread form same as api . joint. thread 5/8 inch from the casing data 8 round and buttress casing x
16 tenaris ms28 xt/xctm 24 tenaris ertm. torque tables 3 are calculated based upon the use of api modified thread compound (torque factor=1).
Api buttress varoughneck [inch] thread length [mm] thread length [inch]