Case Series C - Bolt, Nut, and Hydraulic Fitting Torques

1051-2
U.S. AND METRIC TORQUE SPECIFICATIONS
Torque values for all situations unless special torque is specified.
Grade 5 Bolts, Nuts, Studs ( Dry)
Thread Size
Torque
Thread Size
Torque
ft. lbs. m-kg ft. lbs.
m-kg
1/4" - 20
NC
5-10 0,7-1,4
0
3/4" - 10
NC
235-285
32-39
1/4" - 28
NF
10-15 1,4-2,1
3/4" - 16
NF
270-330
37-46
5/16" - 18
NC
15-20 2,1-2,8
7/8" - 9
NC
360-440
50-61
5/16" - 24
NF
15-20 2,1-2,8
7/8" - 14
NF
395-490 55-68
3/8" - 16
NC
25-35 3,5-4,8
1" - 8
NC
520-640
72-88
3/8" - 24
NF
30-40 4,1-5,5
(D
1" - 12
NF
575-705
79-97
7/16" - 14
NC
45-55 6,2-7,6
1-1/8" - 7
NC
720-820
99-113
7/16" - 20
NF
50-60
6,9-8,3
1-1/8" - 12
NF
790-970
109-134
1/2" - 13
NC
65-85
9,0-12,0
1-1/4" - 7
NC
1010-1240
139-171
1/2" - 20
NF
80-100
11-14 1-1/4" - 12
NF
1115-1365
154-188
9/16" - 12
NC
100-120
14-17
C9
1-3/8" - 6
NC
1315-1610
181-222
9/16" - 18
NF
110-130
15-18 1-3/8" - 12
NF
1510-1850 208-255
5/8" - 11
NC
135-165 19-23
1-1/2" - 6
NC
1745-2135
241-295
5/8" - 18
NF
160-200
22-28
1-1/2" - 12
NF
1880-2420
259-334
Grade 8 Bolts, Nuts, Studs (Dry)
Thread Size Torque
Thread Size Torque
ft. lbs.
m-kg
ft. lbs.
m-kg
1/4" - 20
NC
10-15 1,4-2,1
®
3/4" - 10
NC
340-420 47-58
1/4" - 28
NF
15-20 2,1-2,8
3/4" - 16
NF
380-460 52-63
5/16" - 18
NC
20-30 2,8-4,1
7/8" - 9
NC
540-660
75-91
5/16" - 24
NF
25-30 3,5-4,1
7/8" - 14
NF
595-725
82-100
3/8" - 16
NC
40-50 5,5-6,9
1" - 8
NC
810-990
112-137
3/8" - 24
NF
45-55 6,2-7,6
1" - 12
NF
900-1100
124-152
7/16" - 14
NC
60-80
8,3-11,0
©
1-1/8" - 7
NC
1150-1400 159-193
7/16" - 20
NF
70-90 9,7-12,0
1-1/8" - 12
NF
1295-1585 179-219
'-
1/2" - 13
NC
100-120 14-17
1-1/4" - 7
NC
1640-2000
226-276
1/2" - 20
NF
110-130 15-18
1-1/4" - 12
NF
1800-2200
248-304
9/16" - 12
NC
135-165
19-23
1-3/8" - 6
NC
2140-2620
295-362
9/16" - 18
NF
155-190
21-26
©
1-3/8" - 12
NF
2450-3000
338-414
5/8" - 11
NC
200-240
28-33
1-1/2" - 6
NC
2845-3475
393-480
5/8" - 18
NF
215-265
30-37
1-1/2" - 12
NF
3200-3900
442.-538
Hydraulic Fittings (Steel)
37°
Flare
Straight Thread
Female Swivel 0-Ring
Dash
Tube Thread Torque Torque
Size
O.D.
Size
ft. lbs.
m-kg
ft. lbs. m-kg
4
1/4"
7 /16" - 20
6-12 0,8-1, 7 12-19 1, 7-2,6
5
5/16"
1/2" - 20
8-16 1,1-2,2 16-25 2,2-3,5
6
3/8"
9/16" - 18
10-25
1,4-3,5
25-40
3,5-5,5
8
1/2"
3/4" - 16
15-42 2,1-5,8
42-67
5,8-9,2
10 5/8"
7/8"-14
25-58 3,5-8,0 58-92
8,0-12,7
12 3/4"
1-1/16" - 12
40-80
5,5-11,0 80-128
11-18
14
7 /8"
1-3/16" - 12
60-100
8,3-14,0
100-160
14-22
16
1"
1-5/16" - 12
75-117 10-16 117-187 16-26
20
1-1/4"
1-5/8" - 12
125-165 17-23 165-264
23-36
24
1-1/2"
1-7 /8" - 12
210-250
29-35
700926
250-400
35-55