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FOREWORD
Tightening Torque for Hoses (Taper Seal Type and Face Seal Type)
★ Tighten the hoses (taper seal type and face seal type) to the following torque, unless otherwise specified.
★ Apply the following torque when the threads are coated (wet) with engine oil.
Nominal
Width
size of hose
across flats
02
19
22
03
24
04
27
05
32
06
36
(10)
41
(12)
46
(14)
55
Tightening Torque for Face Seal Joints
★ Tighten the face seal joints (sleeve nut type) made of plated steel pipes for low pressure service to be used for engines, etc.
to the torque shown in this table.
★ Apply the following torque to the face seal joint while their threaded parts are coated with engine oil (wetted).
Outer
Width
Diameter
across
of Pipe
Flats
(mm)
(mm)
8
19
14 – 16 [1.4 – 1.6] {10.33 – 11.80}
10
22
24 – 27 [2.4 – 2.7] {17.70 – 19.91}
12
24 (27)
43 – 47 [4.4 – 4.8] {31.72 – 34.67}
15 (16)
30 (32)
60 – 68 [6.1 – 6.8] {44.25 – 50.15}
22 (20)
36
90 – 95 [9.2 – 9.7] {66.38 – 70.07}
Reference: The face seal joint of the dimension in ( ) is also used, depending on the specification.
For 102, 107, and 114 Engine Series (Bolts and Nuts)
★ Tighten the metric bolts and nuts of the 102, 107 and 114 engine series to the torque in this table, unless there are special
instructions.
Thread Size
mm
6
8
10
12
14
WA380-7
Tightening torque (N•m (lbf-ft))
Range
34 - 54 (25.0 - 39.8)
34 - 63 (25.0 - 46.4)
54 - 93 (39.8 - 68.5)
59 - 98 (43.5 - 72.2)
84 - 132 (61.9 - 97.3)
128 - 186 (94.4 - 137.1)
157 (115.7)
177 - 245 (130.5 - 180.7)
216 (159.3)
177 - 245 (130.5 - 180.7)
216 (159.3)
197 - 294 (145.3 - 216.8)
245 (180.7)
246 - 343 (181.4 - 252.9)
294 (216.8)
Tightening Torque N•m [kgm] {lbf ft}
Range
N•m
10 ±2
24 ±4
43 ±6
77 ±12
—
STANDARD TIGHTENING TORQUE
Taper seal
type
Thread size
Target
size - Threads per
(mm)
inch, Thread series
44 (32.4)
-
44 (32.4)
14
74 (54.5)
-
78 57.5)
18
103 (75.9)
22
24
30
33
36
42
Target
Number of threads,
15 [1.5] {11.06}
25.5 [2.6] {18.81}
45 [4.6] {33.19}
64 [6.5] {47.20}
92.5 [9.4] {68.22}
Tightening Torque
Bolts and Nuts
kgm
1.02 ±0.20
2.45 ±0.41
4.38 ±0.61
7.85 ±1.22
—
Face seal type
Nominal thread
Root diameter (mm)
(Reference)
9/16 - 18UN
—
11/16 -16UN
—
13/16 - 16UN
1 - 14UNS
1-3/16 - 12UN
—
—
—
Face seal
Nominal No. –
Thread Diameter
Type of Thread
(Reference)
9/16-18UN
11/16-16UN
13/16-16UN
1-14UN
1-3/16-12UN
lbf in
88.51 ±17.70
17.70 ±2.95
31.72 ±4.43
56.79 ±8.85
00
14.3
—
17.5
—
20.6
25.4
30.2
—
—
—
00
(mm)
14.3
17.5
20.6
25.4
30.2
00
—
00-37
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