Landoll ICON 17C, Service And Parts Manual

Page: 9 / 80

General Torque Specifications
(rev. 4/97)
Table 3-1: General Torque Specifications
TORQUE SPECIFIED IN FOOT POUNDS -
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 cap-screws
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 cap-screws. Use value in [ ] if using prevailing torque nuts.
UNC
SIZE
SAE
Grade 2
SAE
Grade 5
SAE
Grade 8
UNF
SIZE
SAE
Grade 2
SAE
Grade 5
SAE
Grade 8
1/4-20 4 [5] 6 [7] 9 [11] 1/4-28 5 [6] 7 [9] 10 [12]
5/16-18 8 [10] 13 [13] 18 [22] 5/16-24 9 [11] 14 [17] 20 [25]
3/8-16 15 [19] 23 [29] 35 [42] 3/8-24 17 [21] 25 [31] 35 [44]
7/16-14 24 [30] 35 [43] 55 [62] 7/16-20 27 [34] 40 [50] 60 [75]
1/2-13 35 [43] 55 [62] 80 [100] 1/2-20 40 [50] 65 [81] 90 [112]
9/16-12 55 [62] 80 [100] 110 [137] 9/16-18 60 [75] 90 [112] 130 [162]
5/8-11 75 [94] 110 [137] 170 [212] 5/8-18 85 [106] 130 [162] 180 [225]
3/4/10 130 [162] 200 [250] 280 [350] 3/4-16 150 [188] 220 [275] 320 [400]
7/8-9 125 [156] 320 [400] 460 [575] 7/8-14 140 [175] 360 [450] 500 [625]
1-8 190 [237] 408 [506] 680 [850] 1-14 210 [263] 540 [675] 760 [950]
1-1/8-7 270 [337] 600 [750] 960 [1200] 1-1/8-12 300 [375] 660 [825] 1080 [1350]
1-1/4-7 380 [475] 840 [1050 1426 [1782] 1-1/4-12 420 [525] 920 [1150] 1500 [1875]
1-3/8-6 490 [612] 1010 [1375] 1780 [2225] 1-3/8-12 560 [700] 1260 [1575] 2010 [2512]
1-1/2-6 650 [812] 1460 [1825] 2360 [2950] 1-1/2-12 730 [912] 1640 [2050] 2660 [3325]
1-3/4-5 736 [920] 1651 [2063] 2678 [3347] 1-3/4-12 920 [1150] 2063 [2579] 3347 [4183]
METRIC:
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
(mm)
Newton
Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque)
Nominal
Thread
Diameter
(mm)
Newton
Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque
6 10 [14] 7 [10] 20 385 [450] 290 [335]
7 16 [22] 12 [16] 24 670 [775] 500 [625]
8 23 [32] 17 [24] 27 980 [1105] 730 [825]
10 46 [60] 34 [47] 30 1330 [1470] 990 [1090]
12 80 [125] 60 [75] 33 1790 [1950] 1340 [1450]
14 125 [155] 90 [115] 36 2325 [2515] 1730 [1870]
16 200 [240] 150 [180] 39 3010 [3210] 2240 [2380]
18 275 [330] 205 [245] --------------- --------------- ---------------