The library SAI_SQLS2 is the second part of Standard quantities in LS coupling. Everything in it is related to the f - shells. The tables of fractional parentage for f - shell (see P4 [6]) and the term characteristics are in this library. This library can be used in other programs to its full extent, by employing programs from SAI_SQLS1 library. These are the subroutines SLS, RWLS, W1, AWP1LS, WAP1LS, WWLS1, WWPLS1. The remaining two subroutines may also be used independently.