Tightening Torque Of Bolts And Nuts - Kubota LA525 Assembly Instructions Manual

TIGHTENING TORQUE OF BOLTS AND NUTS

If the torque levels are specified in the text, follow that specification.
American standard screws, bolts and nuts with UNC or
UNF threads
SAE grade No. SAE GR.5
(N m) 11.7 to 15.8
1/4
(kgf m) 1.19 to 1.61
(lbf ft) 8.6 to 11.6
(N m) 23.1 to 27.8
5/16
(kgf m) 2.35 to 2.83
(lbf ft) 17.0 to 20.5
(N m) 47.5 to 57.0
3/8
(kgf m) 4.84 to 5.81
(lbf ft) 35.0 to 42.0
(N m) 108.5 to 130.2
1/2
(kgf m) 11.06 to 13.28
(lbf ft) 80.0 to 96.0
(N m) 149.2 to 179.0
9/16
(kgf m) 15.21 to 18.25
(lbf ft) 110.0 to 132.0
(N m) 203.4 to 244.1
5/8
(kgf m) 20.74 to 24.89
(lbf ft) 150.0 to 180.0
SAE GR.8
16.3 to 19.8
M6
1.66 to 2.02
12.0 to 14.6
32.5 to 39.3
M8
3.31 to 4.01
24.0 to 29.0
61.0 to 73.2
M10
6.22 to 7.46
45.0 to 54.0
149.2 to 179.0
M12
15.21 to 18.25
110.0 to 132.0
217.0 to 260.4
M14
22.13 to 26.55
160.0 to 192.0
298.3 to 358.0
M16
30.42 to 36.51
220.0 to 264.0
M18
M20
ASSEMBLY INSTRUCTIONS
Metric cap screws
property class
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
(N m)
(kgf m)
(lbf ft)
13
8.8 Approx. SAE GR 5
9.8 to 11.2
1.0 to 1.1
7.2 to 8.3
23.6 to 27.4
2.4 to 2.8
17.4 to 20.2
48.1 to 55.8
4.9 to 5.7
35.5 to 41.2
77.5 to 90.1
7.9 to 9.2
57.2 to 66.5
124 to 147
12.6 to 15.0
91.5 to 108.4
197 to 225
20.0 to 23.0
145 to 166
275 to 318
28.0 to 32.5
203 to 235
368 to 431
37.6 to 44.0
272 to 318