GENERAL TORQUE SPECIFICATION CHART FOR I.S.O.** METERIC FASTENERS***
(when SAE 10 oil is used as a lubricant
Minimum
Tensile
Strength 		kg/mm2
P.S.I. 		40 50 60 80 100 120
56900   71100     85340   113800 142200 170700
Proof kg/mm2 22.6 29.1 28.2 36.4 33.9 43.7 47.5 58.2 79.2 95
Load P.S.I. 32150 41390 40110 51770 48220 62160 67560 82780 112650 135130
Property Class 4.6wpe19.jpg (1895 bytes) 4.8wpe19.jpg (1895 bytes) 5.6wpe19.jpg (1895 bytes) 5.8wpe19.jpg (1895 bytes) 6.6wpe19.jpg (1895 bytes) 6.8wpe19.jpg (1895 bytes) 6.9wpe19.jpg (1895 bytes) 8.8wpe19.jpg (1895 bytes) 10.9wpe19.jpg (1895 bytes) 12.9wpe19.jpg (1895 bytes)
Bolt Diameter Figures are KILOGRAM METER except those that are bolded which are KILOGRAM CENTEMETER
Metric Inch                    
6mm 0.236 49 63 61 79 74 95 103 126 172 206
8mm 0.315 119 153 148 191 178 230 250 306 417 500
10mm 0.394 235 303 294 379 353 455 495 606 8.2 10
12mm 0.472 411 529 427 662 616 7.9 8.6 10.5 14 17
14mm 0.551 654 8.4 8.2 10.5 10 12 13 17 23 27
16mm 0.63 10 13 12 16 15 20 21 26 36 43
18mm 0.709 14 18 17 23 21 27 30 36 49 59
22mm 0.866 27 35 34 44 41 52 57 70 95 114

*** NOTE: Use only when manufacture's specifications are not available, these values are for stiff metal-to-metal joints and are based on 90% of proof load. DO NOT USE for gasket joints or joints of soft materials
** I.S.O.= International Standardization Organization.