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Conversion Charts


STANDARD TORQUE VALUE CHART FOR METRIC FASTENERS
TORQUE - KILO-NEWTON
CLASS
4.6
4.8
5.8
8.8
9.8
10.9
12.9
PROOF LOAD Mpa
225
310
380
600
650
830
970
FASTENER
             
  Dia (in.)              
M1.6x0.35 (0.063)  
0.39
 
 
0.83
 
1.23
M2x0.4 (0.079)  
0.64
 
 
1.35
 
2.01
M2.5x0.45 (0.098)  
1.05
 
 
2.20
 
3.29
M3x0.5 (0.118)  
1.56
 
 
3.27
 
4.88
M3.4x0.6 (0.138)  
2.10
 
 
4.41
 
6.58
M4x0.7 (0.157)  
2.72
 
 
5.71
 
8.52
M5x0.8 (0.197)
3.20
4.40
5.40
 
9.23
11.80
13.80
M6.3x1 (0.248)
5.09
7.01
8.59
 
14.70
18.80
21.90
M8x1.25 (0.315)
8.24
11.30
13.90
 
23.80
30.40
35.50
M10x1.5 (0.394)
13.10
18.00
22.00
 
37.70
48.10
56.30
M12x1.75 (0.472)
19.00
26.10
32.00
 
54.80
70.00
81.80
M14x2 (0.551)
25.90
35.70
43.70
 
74.80
95.40
112.00
M16x2 (0.630)
35.30
48.70
59.70
94.20
102.00
130.00
152.00
M20x2.5 (0.787)
55.10
 
93.10
147.00
 
203.00
238.00
M24x3 (0.945)
79.40
 
134.00
212.00
 
293.00
342.00
M30x3.5 (1.181)
126.00
 
 
337.00
 
466.00
544.00
M36x4 (1.417)
184.00
 
 
490.00
 
678.00
792.00

CONVERSION GUIDANCE
Class 4.6 is approximately equal to SAE Grade 1, and ASTM A307, Grade A.
Class 5.8 is approximately equal to SAE Grade 2.

Class 8.8 is approximately equal to SAE Grade 5, and ASTM A449.
Class 9.8 has properties approximately 9 percent stronger than SAE Grade 5, and ASTM A449.
Class 10.9 is approximately equal to SAE Grade 8, and ASTM A354, Grade BD.