Kubota BX1860 Workshop Manual page 323

BX1860, BX2360, BX2660, RCK48(P)-18BX, RCK54(P)-23BX, RCK60B-23BX, LA203, LA243, WSM
AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS
Grade
Unit
Nominal
Diameter
5/16 23.1 to 27.7
3/ 8 48 to 56
1/ 2 109 to 130
9/16 149.2 to 178.9
5/ 8 203.4 to 244
PLUGS
Shape Size
Tapered R1/8
screw
R1/4
Straight G1/4
screw
G3/8
G1/2
SAE GR.5
N·m kgf·m
2.35 to 2.83
4.9 to 5.8
11.1 to 13.2
15.21 to 18.24
20.74 to 24.88
Ordinariness
N·m kgf·m
13 to 21 1.3 to 2.2
25 to 44 2.5 to 4.5
25 to 34 2.5 to 3.5
62 to 82 6.3 to 8.4
49 to 88 5.0 to 9.0
lbf·ft N·m
17.0 to 20.5 32.6 to 39.3
35.0 to 42.0 61.1 to 73.2
80.0 to 96.0 149.2 to 178.9
110.0 to 132.0 217.0 to 260.3
150.0 to 180.0 298.3 to 357.9
Material of opponent part
lbf·ft N·m
9.4 to 15 13 to 21
18 to 32 25 to 34
18 to 25 –
46 to 60 –
37 to 65 –
7-G4
G GENERAL
SAE GR.8
kgf·m lbf·ft
3.32 to 4.00 24.0 to 29.0
6.23 to 7.46 45.0 to 54.0
15.21 to 18.24 110.0 to 132.0
22.12 to 26.54 160.0 to 192.0
30.42 to 36.49 220.0 to 264.0
W1022485
Aluminum
kgf·m lbf·ft
1.3 to 2.0 9.4 to 15
2.5 to 3.5 18 to 25
– –
– –
– –
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KiSC issued 06, 2009 A