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26 Appendix
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
2 5/16 - 24 5/16 - 24 ---
3 3/8 - 24 3/8 - 24 ---
4 7/16 - 20 7/16 - 20 9/16 - 18
5 1/2 - 20 1/2 - 20 ---
6 9/16 - 18 9/16 - 18 11/16 - 16
8 3/4 - 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
2 4545------
3 8 11 9 12 --- ---
4 12 16 16 22 18 25
5 15 20 22 30 --- ---
6 18 25 35 48 27 37
8 37 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 --- --- --- ---