General Torque Specifications (Rev. 4/97) - Landoll 2511 IN-3-30 2511 N-4-30 2511 N-5-30 Operator's Manual

General Torque Specifications
(rev. 4/97)
TORQUE SPECIFIED IN FOOT POUNDS -
special torques are not specified on process or drawing. Assembly torques apply to plated nuts and capscrews 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
capscrews. Use value in [ ] if using prevailing torque nuts.
UNC SIZE SAE Grade 2
1/4-20 4 [5]
5/16-18 8 [10]
3/8-16 15 [19]
7/16-14 24 [30]
1/2-13 35 [43]
9/16-12 55 [62]
5/8-11 75 [94]
3/4/10 130 [162]
7/8-9 125 [156]
1-8 190 [237]
1-1/8-7 270 [337]
1-1/4-7 380 [475]
1-3/8-6 490 [612]
1-1/2-6 650 [812]
1-3/4-5 736 [920]
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 Newton
thread Meters
diameter (Standard
(mm) Torque)
6
7
8
10
12
14 125
16 200
18 275
TABLE OF CONTENTS
This chart provides tightening torques for general purpose applications when
SAE Grade 5 SAE Grade 8
6 [7] 9
13 [13] 18
23 [29] 35
35 [43] 55
55 [62] 80
80 [100] 110
110 [137] 170
200 [250] 280
320 [400] 460
408 [506] 680
600 [750] 960 [1200]
840 [1050] 1426 [1782]
1010 [1375] 1780 [2225]
1460 [1825] 2360 [2950]
1651 [2063] 2678 [3347]
Foot
Pounds
(Standard
Torque)
10 [14] 7
16 [22] 12
23 [32] 17
46 [60] 34
80 [125] 60
[155] 90
[240] 150
[330] 205
Figure 2-1: General Torque Specifications
UNF SIZE SAE Grade 2
[11] 1/4-28 5
[22] 5/16-24 9
[42] 3/8-24 17
[62] 7/16-20 27
[100] 1/2-20 40
[137] 9/16-18 60
[212] 5/8-18 85
[350] 3/4-16 150
[575] 7/8-14 140
[850] 1-14 210
1-1/8-12 300
1-1/4-12 420
1-3/8-12 560
1-1/2-12 730
1-3/4-12 920 [1150]
Nominal
Thread
Diameter
(mm)
[10] 20
[16] 24
[24] 27
[47] 30
[75] 33
[115] 36
[180] 39
[245]
STANDARD SPECIFICATIONS
SAE Grade 5 SAE Grade 8
[6] 7 [9]
[11] 14 [17]
[21] 25 [31]
[34] 40 [50]
[50] 65 [81]
[75] 90 [112]
[106] 130 [162]
[188] 220 [275]
[175] 360 [450]
[263] 540 [675]
[375] 660 [825]
[525] 920 [1150]
[700] 1260 [1575]
[912] 1640 [2050]
2063 [2579]
Newton
Meters Pounds
(Standard (Standard
Torque) Torque
385 [450] 290
670 [775] 500
980 [1105] 730
1330 [1470] 990
1790 [1950] 1340
2325 [2515] 1730
3010 [3210] 2240
10 [12]
20 [25]
35 [44]
60 [75]
90 [112]
130 [162]
180 [225]
320 [400]
500 [625]
760 [950]
1080 [1350]
1500 [1875]
2010 [2512]
2660 [3325]
3347 [4183]
Foot
[335]
[625]
[825]
[1090]
[1450]
[1870]
[2380]
2-3