| Table 1 - Torque-Tension Relationships for SAE Grades 2, 5 and 8 |
|
Nom.
Size
and
Threads
/ in. |
Stress
Area
(1)
in. 2 |
Grade
2
Clamp
Load
Lb. |
Grade
2
Torque
Dry
k=0.2
in - lb. |
Grade 2
Torque
Lub
k=0.15
in-lb. |
Grade
5
Clamp
Load
lb. |
Grade
5
Torque
Dry k=0.2
in-lb. |
Grade 5
Torque
Lub
k=0.15
in-lb |
Grade
8
Clamp
Load
Lb. |
Grade
8
Torque
Dry
k=0.2
in-lb. |
Grade
8
Torque
Lub
k=0.15
in-lb. |
|
0.138-40 |
0.01014 |
418.0 |
10.2 |
7.7 |
647.5 |
15.6 |
11.7 |
913.5 |
23.4 |
17.6 |
|
0.138-32 |
0.00909 |
401.0 |
9.6 |
7.2 |
579.5 |
14.4 |
10.8 |
818.0 |
21.0 |
15.8 |
|
0.164.36 |
0.01473 |
608.0 |
17.4 |
13.1 |
938.5 |
27.6 |
20.7 |
1306.0 |
40.2 |
30.2 |
|
0.164-31 |
0.01401 |
578.0 |
16.8 |
12.6 |
893.0 |
25.8 |
19.4 |
1261.0 |
40.2 |
30.2 |
|
0.190-32 |
0.01999 |
825.0 |
28.2 |
21.2 |
1275.0 |
43.2 |
32.4 |
1798.5 |
63.6 |
47.7 |
|
0.190-24 |
0.01753 |
723.0 |
24.6 |
18.5 |
1117.5 |
37.2 |
27.9 |
1577.5 |
55.8 |
41.9 |
|
0.250-28 |
0.03637 |
1500.0 |
75.0 |
56.0 |
2319.0 |
116.0 |
87.0 |
3273.0 |
164.0 |
123.0 |
|
0.250-20 |
0.03182 |
1313.0 |
66.0 |
49.0 |
2029.0 |
101.0 |
76.0 |
2864.0 |
143.0 |
107.0 |
|
0.3125-24 |
0.05807 |
2395.0 |
150.0 |
112.0 |
3700.0 |
230.0 |
173.0 |
5225.0 |
327.0 |
245.0 |
|
0.3125-18 |
0.05243 |
2163.0 |
135.0 |
101.0 |
3342.0 |
209.0 |
157.0 |
4719.0 |
295.0 |
221.0 |
|
.0375-24 |
0.08783 |
3623.0 |
272.0 |
204.0 |
5600.0 |
420.0 |
315.0 |
7905.0 |
893.0 |
445.0 |
|
.0375-16 |
0.07749 |
3196.0 |
240.0 |
180.0 |
4940.0 |
370.0 |
278.0 |
6974.0 |
523.0 |
392.0 |
|
0.4375-20 |
0.11872 |
4896.0 |
428.0 |
321.0 |
7567.0 |
662.0 |
496.0 |
10638.0 |
935.0 |
700.0 |
|
0.4375-14 |
0.10631 |
4385.0 |
384.0 |
288.0 |
6777.0 |
593.0 |
445.0 |
9567.0 |
837.0 |
628.0 |
|
0.500-20 |
0.15995 |
6598.0 |
660.0 |
495.0 |
10197.0 |
1020.0 |
764.0 |
14396.0 |
1440.0 |
1080.0 |
|
0.500-13 |
0.14190 |
5853.0 |
585.0 |
439.0 |
9046.0 |
904.0 |
678.0 |
12771.0 |
1277.0 |
958.0 |
| Table 2 - Torque-Tension Relationships for Metric Property Classes |
|
Major
Diameter
and
Thread
Pitch |
Stress Area
mm2 |
Class
4.6
Clamp Load
kN |
Class 4.6
Torque
Dry
k=0.2
N-m |
Class 4.6
Torque
Lub
k=0.15
N-m |
Class
4.8
Clamp Load
kN |
Class 4.8
Torque
Dry
k=0.2
N-m |
Class 4.8
Torque
Lub
k=0.15
N-m |
Class 5.8
Clamp Load
kN |
Class 5.8
Torque
Dry
k=0.2
N-m |
Class 5.8
Torque
Lub
k=0.15
N-m |
|
3.0x0.5 |
5.03 |
.085 |
0.50 |
0.40 |
1.17 |
0.70 |
0.50 |
. |
. |
. |
|
3.5x0.6 |
6.78 |
1.14 |
0.80 |
0.60 |
1.58 |
1.10 |
0.80 |
. |
. |
. |
|
4.0x0.7 |
8.78 |
1.14 |
1.20 |
0.90 |
2.04 |
1.60 |
1.20 |
. |
. |
. |
|
5.0x0.8 |
14.2 |
2.40 |
2.40 |
1.80 |
3.30 |
3.30 |
2.50 |
4.05 |
4.00 |
3.00 |
|
6.0x1.0 |
20.10 |
3.40 |
4.00 |
3.00 |
4.67 |
5.66 |
4.20 |
5.73 |
6.90 |
5.20 |
|
8.0x1.25 |
36.60 |
6.18 |
9.90 |
7.40 |
8.51 |
13.60 |
10.20 |
10.40 |
16.70 |
12.50 |
|
10.0x1.50 |
58.00 |
9.79 |
19.60 |
14.70 |
13.48 |
27.00 |
20.00 |
16.50 |
33.10 |
24.80 |
|
12.0x1.75 |
84.30 |
14.22 |
34.10 |
25.60 |
19.60 |
47.00 |
35.00 |
24.00 |
58.00 |
43.00 |
Tensile Strength
Proof Load Stress |
400 MPa
224 MPa |
420 MPa
310 MPa |
520 MPa
380 MPa |
|
Major
Diameter
and
Thread
Pitch |
Stress Area
mm2 |
Class
8.8
Clamp Load
kN |
Class 8.8
Torque
Dry
k=0.2
N-m |
Class 8.8
Torque
Lub
k=0.15
N-m |
Class
9.8
Clamp Load
kN |
Class 9.8
Torque
Dry
k=0.2
N-m |
Class 9.8
Torque
Lub
k=0.15
N-m |
Class 10.9
Clamp Load
kN |
Class 10.9
Torque
Dry
k=0.2
N-m |
Class 10.9
Torque
Lub
k=0.15
N-m |
|
3.0x0.5 |
5.03 |
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
3.5x0.6 |
6.78 |
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
4.0x0.7 |
8.78 |
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
5.0x0.8 |
14.20 |
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
6.0x1.0 |
20.10 |
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
8.0x1.25 |
36.60 |
16.50 |
26.40 |
19.80 |
17.80 |
28.50 |
21.40 |
22.80 |
36.50 |
27.30 |
|
10.0x1.50 |
58.00 |
26.10 |
52.20 |
39.20 |
28.30 |
56.60 |
42.40 |
36.10 |
72.20 |
54.20 |
|
12.0x1.75 |
84.30 |
37.90 |
91.00 |
68.00 |
41.10 |
99.00 |
74.00 |
52.50 |
126.00 |
94.00 |
Tensile Strength
Proof Load Stress |
830 MPa
600 MPa |
900 Pa
650 Pa |
1040 Pa
830 Pa |
|
NOTE: The stress area of threaded series not included in Table 2 may be computed from the equation: As=0.7854 (D - 0.9382P)2 WHERE: As=Stress area in mm2 D=Diameter in mm P=Pitch in mm
CAUTION: The previously listed torque and resulting tension are provided as an advisory guide. Individual application discretion is recommended. The content, has been presented as accurately as possible, but responsibility for its application lies with the user. |
