TM   10-3930-643-20 APPENDIX E (cont) d . Table   E-4. Torque   Limits   for   Tube   Nuts.   This   table   provides   tightening torques   for   tube   nuts   when   tubes   are   flared   to   use   37   degree   fittings.   Torque limits   given   are   for   plain,   cadmium,   or   zinc   plated   fittings   for   wet   or   dry i n s t a l l a t i o n s. FITTING  NO. 4 5 6 8 10 12 14 16 20 24 32 POUNDS TORQUE IN  FOOT POUNDS THREAD  SIZE MIN. MAX. 7/16-20 1/2   -20 9/16-18 3/4   -16 7/8   -14 1-1/16-12 1-3/16-12 1-5/16-12 1-5/8   -12 1-7/8   -12 2-1/2   -12 9 12 21 35 53 77 90 110 140 162 225 12 15 24 40 58 82 100 120 150 175 240 TORQUE IN NEWTON METERS MIN. MAX. 12 16 29 47 72 104 122 149 190 217 305 16 20 33 54 79 111 136 163 204 237 325 e .    T a b l e    E - 5. Torque   Limits   for   Hydraulic   Fittings.   This   table   provides tightening   torques   for   preformed   packing,   boss   connectors   and   plugs,   37   degree seat   swivel   nuts   (fittings   and   hose),   and   locknuts   on   adjustable   fittings. FITTING  NO. 4 5 6 8 10 12 14 16 20 24 32 TORQUE IN  FOOT THREAD  SIZE MIN. MAX. 7/16-20 1/2   -20 9/16-18 3/4   -16 7/8   -14 1-1/16-12 1-3/16-12 1-5/16-12 1-5/8   -12 1-7/8   -12 2-1/2   -12 6 10 15 25 35 60 70 80 95 120 250 10 15 20 30 40 70 80 90 115 140 300 TORQUE IN  NEWTON METERS MIN. 8 14 20 34 48 81 95 109 129 163 339 14 20 27 41 54 95 109 122 156 190 407 E-3/(E-4   blank)

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