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FOREWORD
For O-Ring Boss Plugs
★ Unless there are special instructions, tighten the O-ring boss plugs to the torque in this table.
Thread Diameter
Norminal
No.
mm
08
08
10
10
12
12
14
14
16
16
18
18
20
20
24
24
30
30
33
33
36
36
42
42
52
52
For Hoses (Taper-Seal Type and Face-Seal Type)
★ Unless there are special instructions, tighten the hoses (taper seal type and face seal type) to the torque in this table.
★ Apply the following torque when the threads are coated (wet) with engine oil.
Nominal
Width
Size
across
of Hose
Flat
02
19
22
03
24
04
27
05
32
06
36
(10)
41
(12)
46
(14)
55
00-34
c
Width across Flats
mm
14
17
19
22
24
27
30
32
32
_
36
_
_
Tightening Torque (N•m [kgm] {lbf ft})
Range
34 – 54 [3.5 – 5.5]
{25 – 40}
34 – 63 [3.5 – 6.5]
{25 – 47}
54 – 93 [5.5 – 9.5]
{40 – 69}
59 – 98 [6.0 – 10.0]
{44 – 72}
84 – 132 [8.5 – 13.5]
{62 – 97}
128 – 186 [13.0 – 19.0]
{94 – 137}
177 – 245 [18.0 – 25.0]
{1315 – 181}
177 – 245 [18.0 – 25.0]
{131 – 181}
197 – 294 [20.0 – 30.0]
{145 – 217}
246 – 343 [25.0 – 35.0]
{181 – 253}
STANDARD TIGHTENING TORQUE
Tightening Torque (N•m [kgm] {lbf lb})
Range
5.88 – 8.82 [0.6 – 0.9] {4.33 – 6.50}
9.8 – 12.74 [1.0 – 1.3] {7.22 – 9.39}
14.7 – 19.6 [1.5 – 2.0] {10.84 –- 14.45}
19.6 – 24.5 [2.0 – 2.5] {14.45 – 18.07}
24.5 – 34.3 [2.5 – 3.5] {18.07 – 25.29}
34.3 – 44.1 [3.5 – 4.5] {25.29 – 32.52}
44.1 – 53.9 [4.5 – 5.5] {32.52 – 39.75}
58.8 – 78.4 [6.0 – 8.0] {43.36 – 57.82}
93.1 – 122.5 [9.5 – 12.5] [{68.66 – 90.35}
107.8 – 147.0 [11.0 – 15.0] {79.50 – 108.42}
127.4 – 176.4 [13.0 – 18.0] {93.96 – 130.10}
181.3 –240.1 [18.5 – 24.5] {133.72 – 177.08}
274.4 – 367.5 [28.0 – 37.5] {202.38 – 271.05}
Taper-Seal
Type
Thread Size
Target
(mm)
–
44 [4.5] {33}
14
74 [7.5] {55}
–
78 [8.0] {58}
18
103 [10.5] {76}
22
157 [16.0] {116}
24
216 [22.0] {159}
30
216 [22.0] {159}
33
245 [25.0] {181}
36
294 [30.0] {217}
42
Target
7.35 [0.75] {5}
11.27 [1.15] {8}
17.64 [1.8] {13}
22.54 [2.3] {17}
29.4 [3.0] {22}
39.2 [4.0] {29}
49.0 [5.0] {36}
68.6 [7.0] {51}
107.8 [11.0] {80}
124.4 [13.0] {92}
151.9 [15.5] {112}
210.7 [21.5] {155}
323.4 [33.0] {239}
Face-Seal Type
Nominal Thread
Size
Root Diameter
Threads per
(mm)
Inch,
(Reference)
Thread Series
9/16 - 18UN
14.3
–
11/16 -16UN
17.5
–
13/16 - 16UN
20.6
1 - 14UNS
25.4
1 3/16 - 12UN
30.2
–
–
–
WA250-6
00
00
–
–
–
–
–
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