Appendix 35
Fitting Torque Chart (7/15/2005)
FITTING TORQUE CHART

Always tighten fittings to these values unless a different torque value is listed

for a specific service procedure.

Make sure fastener threads are clean and threads are engaged properly.

All torque values are adopted from SAE J514 and SAE J1453.

Size
SAE (JIC)
37° Flare Thread
Size
O-Ring Style
Straight Thread
Size
Seal-Lok
Thread
25/16 - 24 5/16 - 24 ---
33/8 - 24 3/8 - 24 ---
47/16 - 20 7/16 - 20 9/16 - 18
51/2 - 20 1/2 - 20 ---
69/16 - 18 9/16 - 18 11/16 - 16
83/4 - 16 3/4 - 16 13 /16 - 16
10 7/8 - 14 7/8 - 14 1 - 14
12 1-1/16 - 12 1-1/16 - 12 1-3/16 - 12
14 1-3/16 - 12 1-3/16 - 12 ---
16 1-5/16 - 12 1-5/16 - 12 1-7/16 - 12
20 1-5/8 - 12 1-5/8 - 12 1-11/16 - 12
24 1-7/8 - 12 1-7/8 - 12 2 - 12
32 2-1/2 - 12 2-1/2 - 12 ---
SAE
Dash
Size
TORQUE
SAE 37° Flare O-Ring Straight Thread Seal-Lok
Lbs-Ft N-m Lbs-Ft N-m Lbs-Ft N-m
24545------
3811912------
412 16 16 22 18 25
515 20 22 30 --- ---
618 25 35 48 27 37
837 50 60 82 40 54
10 48 65 105 143 63 86
12 74 100 140 190 92 125
14 88 120 184 250 --- ---
16 100 135 221 300 122 165
20 133 180 258 350 147 200
24 166 225 317 430 166 225
32 236 320 --- --- --- ---