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STANDARD SPECIFICATIONS
THIS CHART PROVIDES TIGHTENING TORQUES FOR GENERAL PURPOSE APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS
OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED NUTS AND CAPSCREWS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED CONDITION). THEY
DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
WHEN FASTENERS ARE DRY (SOLVENT CLEANED), ADD 33% TO AS RECEIVED CONDITION TORQUE.
BOLT HEAD IDENTIFICATION MARKS INDICATE GRADE AND MAY VARY FROM MANUFACTURER TO MANUFACTURER.
THICK NUTS MUST BE USED ON GRADE 8 CAPSCREWS.
USE VALUE IN [
] IF USING PREVAILING TORQUE NUTS.
TORQUE IS SPECIFIED IN FOOT POUNDS
UNC
SAE Grade
Size
2
1/4-20
4
[5]
5/16-18
8
[10]
3/8-16
15
[19]
7/16-14
24
[30]
1/2-13
35
[43]
9/16-12
55
[62]
5/8-11
75
[94]
3/4-10
130
[162]
7/8-9
125
[156]
1-8
190
[237]
1-1/8-7
270
[337]
1-1/4-7
380
[475]
1-3/8-6
490
[612]
1-1/2-6
650
[812]
1-3/4-5
736
[920]
COARSE THREAD METRIC CLASS 10.9 FASTENERS AND CLASS 10.0 NUTS AND THROUGH HARDENED FLAT WASHERS, PHOSPHATE COATED, ROCKWELL
"C" 38-45.
USE VALUE IN [
] IF USING PREVAILING TORQUE NUTS.
Nominal
Thread
Diameter
Newton-
mm
Meters
6
10
7
16
8
23
10
46
12
80
14
125
16
200
18
275
2-2
LANDOLL CORPORATION
GENERAL TORQUE SPECIFICATIONS (REV. 4/97)
SAE Grade
SAE Grade
5
8
6
[7]
9
[11]
13
[16]
18
[22]
23
[29]
35
[43]
35
[43]
55
[62]
55
[62]
80
[100]
80
[100]
110
[137]
110
[137]
170
[212]
200
[250]
280
[350]
320
[400]
460
[575]
408
[506]
680
[850]
600
[750]
960
[1200] 1-1/8-12
840
[1050]
1426 [1782] 1-1/4-12
110
[1375]
1780 [2225] 1-3/8-12
1460 [1825]
2360 [2950] 1-1/2-12
1651 [2063]
2678 [3347] 1-3/4-12
Standard Torque
Foot-
Pounds
[14]
7
[10]
[22]
12
[16]
[32]
17
[24]
[60]
34
[47]
[101]
60
[75]
[155]
90
[115]
[240]
150
[180]
[330]
205
[245]
Table 2-1: General Torque Specifications
UNF
SAE Grade
Size
1/4-28
5
5/16-24
9
3/8-24
17
7/16-20
27
1/2-20
40
9/16-18
60
5/8-18
85
3/4-16
150
7/8-14
140
1-14
210
300
420
560
730
920
METRIC
Nominal
Thread
Diameter
mm
20
385
24
670
27
980
30
1330
33
1790
36
2325
39
3010
SAE Grade
2
5
[6]
7
[9]
10
[11]
14
[17]
20
[21]
25
[31]
35
[34]
40
[50]
60
[50]
65
[81]
90
[75]
90
[112]
130
[106] 130
[162]
180
[188] 220
[275]
320
[175] 360
[450]
500
[263] 540
[675]
760
[375] 660
[825]
1080 [1350]
[525] 920
[1150] 1500 [1875]
[700] 1260 [1575] 2010 [2512]
[912] 1640 [2050] 2660 [3325]
[1150] 2063 [2579] 3347 [4183]
Standard Torque
Newton-
Meters
Pounds
[450]
290
[775]
500
[1105]
730
[1470]
990
[1950]
1340
[2515]
1730
[3210]
2240
F-563-0610 Edition
SAE Grade
8
[12]
[25]
[44]
[75]
[112]
[162]
[225]
[400]
[625]
[950]
Foot-
[335]
[625]
[825]
[1090]
[1450]
[1870]
[2380]
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