TM 1-1500-204-23-6 Table 2-19.  Safety Cable Minimum Crimp Requirements (Pull-Off Load) Nominal Cable Diameter Inch (mm) Safety Cable Construction Minimum Pull-Off Load Ibf (N) 0.020 (0.51) 1 x 7 30 (133.4) 0.032 (0.81) 3 x 7 70 (311.4) 0.040 (1.02) 7 x 7 110 (489.3) (10)    Hole    Alignment.         Undertorquing    or overtorquing  to  obtain  proper  alignment  of  the  holes  is not  permitted.    Apply  recommended  torque  values  to parts  to  be  secured,  and  alignment  of  holes  shall  be evaluated   before   attempting   to   proceed   with   safety cable. CAUTION The    maximum    bend    exit    limit    of safety    cable,    when    applied    to    a threaded    fastener    head,    shall    be 1350.    This  does  not  apply  to  hose fittings, electrical connector coupling mechanisms, turnbuckles, and similar applications where the safety cable is constrained by the shape of the component being secured. (11)    In applications where safety cable shall be required to exceed the 1350 maximum bend exit limit in order to achieve neutral to positive pull on a threaded fastener head, a self looping device which is secured to the  safety  cable  by  the  safety  cable  manufacturer  may be used to obtain a secured installation as shown (figure 2-86). CAUTION This method should only be used in applications  where  the  safety  cable can not "flip" over the corner or over the     head     of     the     fastener     being secured. Figure 2-86.  Self Looping Safety Cable in High Bend Exit Application (12)    Cable    Flex    Limits.        After    installing safety   cable,   the   maximum   flex   between   termination points   shall   be   no   greater   than   that   specified   in   the Cable Flex Limit Table (table 2-20). NOTE When  calculating  the  flex  limit  (B  &  C) of     safety     cable     which     is     installed through  three  fasteners,  the  A  =  D  +  E formula   shall   apply   (see   figure   2-87). The total length of safety cable from the point where it exits the first fastener, to the    point        where    it    enters    the    last fastener     shall     be     measured.          The corresponding   length   from   table   2-20, column A shall be used to determine the flex limit. Table 2-20.  Flex Limits, Inch (mm) A B C 0.5 (12.7) 0.125 (3.18) 0.062 (1.59) 1.0 (25.4) 0.250 (6.35) 0.125 (3.18) 2.0 (50.8) 0.375 (9.52) 0.188 (4.76) 3.0 (76.2) 0.375 (9.52) 0.188 (4.76) 4.0 (101.6) 0.500 (12.70) 0.250 (6.35) 5.0 (127.0) 0.500 (12.70) 0.250 (6.35) 6.0 (152.4) 0.625 (15.88) 0.312 (7.94) Figure 2-87.  Safety Cable Flex Limits NOTE Light finger pressure of approximately    2    pounds    shall    be applied at mid-span when inspecting total    flex    limit    of    installed    safety cable. Change 2   2-86