Snorkel LX41 Electric-sn4022+ - Manual (Page 24)

Torque Specifications Section 1 - General Information
Page 1-4 Service Manual
Table 1-3: Torque Specifications for Metric Fasteners, U.S. Customary Units
Table 1-4: Torque Specifications for Metric Fasteners, SI Units
Grade 8.8 Grade 10.9 Grade 12.9
Nominal
Thread
Size
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
K =,15 K =,20 K =,15 K =,20 K =,15 K =,20
mm lbs. in-lbs. in-lbs. lbs. in-lbs. in-lbs. lbs. in-lbs. in-lbs.
3 - - - - - - 823 14.6 19.5
3.5 - - - - - - 1,109 22.9 30.5
4 - - - - - - 1,436 33.9 45.2
5 1,389 41.0 54.7 1,987 58.7 78.2 2,322 68.6 91.2
6 1,966 69.7 92.9 2,813 100.0 132.8 3,287 116.8 155.8
7 2,826 116.8 155.8 4,044 167.3 223.0 4,727 195.6 260.2
ft-lbs. ft-lbs. ft-lbs. ft-lbs. ft-lbs. ft-lbs.
8 3,579 14.1 18.8 5,122 20.1 26.9 5,986 23.6 31.4
10 11,742 27.9 37.2 8,117 39.9 53.3 9,486 46.7 62.3
12 8,244 48.7 64.9 11,797 69.7 92.2 13,787 81.1 108.4
14 11,246 77.4 103.3 16,093 110.6 147.5 18,808 129.1 172.6
16 15,883 125.4 166.7 21,971 173.3 230.9 25,677 202.1 269.2
18 19,424 171.9 229.4 26,869 238.2 317.2 31,401 278.1 371.0
20 2,304 243.4 325.3 34,286 337.8 449.9 40,070 394.6 525.9
22 30,653 331.9 442.5 42,403 458.8 612.2 49,556 536.2 715.4
24 35,711 420.4 562.0 49,400 583.4 778.1 57,733 682.2 909.4
27 46,435 617.3 84.8 64,235 853.4 1138.1 75,069 997.2 1329.8
30 56,753 837.9 1117.4 78,509 1159.4 1545.2 91,751 1354.9 1807.0
33 70,208 1140.3 1520.1 97,121 1576.9 2102.8 113,503 1843.9 2457.5
36 82,651 1464.1 1952.3 114,334 2025.3 2700.9 133,620 2367.6 3156.0
8.8 10.9 12.9
Grade 8.8 Grade 10.9 Grade 12.9
Nominal
Thread
Size
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
K =,15 K =,20 K =,15 K =,20 K =,15 K =,20
mm N N-m N-m N N-m N-m N N-m N-m
3 - - - - - - 3660 1,65 2,2
3,5 - - - - - - 4932 2,59 3,45
4 - - - - - - 6387 3,83 5,11
5 6177 4,63 6,18 8840 6,63 8,84 10330 7,75 10,3
6 8743 7,87 10,5 12512 11,3 15 14623 13,2 17,6
7 12570 13,2 17,6 17990 18,9 25,2 21025 22,1 29,4
8 15921 19,1 25,5 22784 27,3 36,5 26626 32 42,6
10 52230 37,8 50,5 36105 54,1 72,2 42195 63,3 84,4
12 36670 66 88 52475 94,5 125 61328 110 147
14 50025 105 140 71587 150 200 83663 175 234
16 70650 170 226 97732 235 313 114218 274 365
18 86400 233 311 119520 323 430 139680 377 503
20 10250 330 441 152513 458 610 178238 535 713
22 136350 450 600 188618 622 830 220433 727 970
24 158850 570 762 219743 791 1055 256808 925 1233
27 206550 837 115 285728 1157 1543 333923 1352 1803
30 252450 1136 1515 349223 1572 2095 408128 1837 2450
33 312300 1546 2061 432015 2138 2851 504885 2500 3332
36 367650 1985 2647 508582 2746 3662 594368 3210 4279
8.8 10.9 12.9