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Craftsman CTX 9000 Operator's Manual page 86

22 gross hp briggs & stratton with 46" mower
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Torque Specification Chart
FORSTANDARD METRIC MACHINEHARDWARE (Tolerance ± 20%)
Properly
Class
SizeOf
Hardware
5.88
13.44
26.4
44,64
5.2
7.7
15
26
42
64
89
126
169
217
326
435
599
759
988
M3
M4
M5
M6
M7
M8
MIO
M12
M14
M16
M18
M20
M22
M24
M27
M30
M33
M36
M39
in/Ibs
ft/Ibs
Nm.
.56
1.28
2.5O
4.3
7.1
10.5
21
36
58
88
121
17!
23O
295
435
590
8OO
1030
1340
®
Class 8.8
in/Ibs
fl/Ibs
Nm.
13.44
1,28
30,72
2,90
6O,96
5.75
7.3
9,9
12.1
!6.5
17.7
24
35
48
81
83
191
132
147
200
292
275
290
390
399
530
497
375
733
995
995
1350
1349
1830
1740
2360
2249
3050
in/Ibs
fl/]bs
Nm.
!9.2
1.80
43.44
4,!0
5.97
8,10
16.3
14
18.9
23
25
34
50
67
86.2
117
136
185
210
285
297
390
405
550
559
745
798
960
1932
1400
1461
1900
1992
2580
2441
33!0
3183
4290
in/Ibs
fl/|bs
22.92
52.56
7.15
12.1
19.9
29
59
103
162
259
346
486
656
840
1239
1881
2278
2935
3798
The guides and ruler furnished below are designed to
help you select the appropriate hardware.
Nm.
2.15
4.95
9.7
16.5
27
4O
81
140
220
340
470
66O
89O
1!40
1680
2280
3090
3980
5150
jill IIIllllll I III I III
0
10
20
30
©
Nu_M8
Thread
Diameter(mm)
Inside
Threads
Diameter(in)
per inch
Nut, 1/2-16
o
I
,I,J,I,
,I,J,I,
""1"" ""1"" "" I "" ' "'1'"'
'"' I'"' '"'1'"'
'"' '"
40
50
60
70
80
90
100
coy
iameter
_--'Jr_Body
Length------_
Screw, M8= 1.25 x 25
Thread
Distance
between
Body
Diameter(mm)
threads(mm)
Length(ram)
Body
Threads
Body
Diameter
per rich
Length (in)
_-
,
J
F---------J
Screw, 112= 16 x 2
2
3
4
Standard Hardware Sizing
When a washer or nut is identified as1/2"
(M8), this is
the Nominal
siz_ meaning the inside diameteris
1/2 inch
(8ram metric thread diameter);
if a second number is present
it represents
the threads per inch (distance
between threads).
When bolt or capscrew is identified as1/2 = 16 x 2" (M8 - 1.25 x 50 ),
this means the Nominal size, or body diameter is 1/2 inch (8mm
metric thread diameter), the second number,16, represents the
threads per inch, (1.25 thread diameter).The
final number is the
body length of the bolt or screw, 2 inches (50ram).
Torque Specification Chart
FORSTANDARD MACHINE HARDWARE (Tolerance +20%)
_ddeware
_
0
0
SAE Grade 2
8AEGrade 5
SAE Grade 8
Size Of
in/Ibs
in/Ibs
in/Ibs
Hardware fl/Ibs
Nm.
fl/Ibs
Nm.
fl/Ibs
Nm.
8-32
8-36
10-24
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
1-8
1-12
19
2.1
20
2.3
27
3.1
31
3.5
66
7.6
76
8.6
11
15.0
12
16.3
20
27.2
23
31.3
3O
40.8
35
47.6
50
68.0
55
74.8
65
88.4
75
102.0
99
122.4
lOG
136
16Q
217.6
180
244.8
140
190.4
155
210.8
229
299.2
249
326.4
1. These torque
30
3.4
31
3.5
43
4.9
49
5.5
8
10.9
10
13.6
17
23.1
19
25.8
36
40.8
35
47.6
50
68.0
55
74.8
75
102.0
90
122.4
110
149.6
120
163.2
150
204.0
180
244.8
260
353.6
398
408.0
400
544.0
440
598.4
580
788.8
640
870.4
41
4.6
43
4.9
60
6.8
68
7.7
12
16.3
14
19.0
25
34.0
29
34.0
45
61.2
58
68.0
78
95.2
88
108.8
118
149.6
120
163.2
158
204.0
178
231.2
220
299.2
248
326.4
388
525.0
420
571.2
6OO
816.0
869
897.6
988
1,244.0
1,808
1,360.0
NOTES
values are to be used for all hardware
excluding:
Iocknuts, self-tapping
screws, thread forming
screws, sheet metal screws and socket head setscrews.
2. Recommended
seating torque values for Iocknuts:
a. for prevailing torque Iocknuts - use 65% of grade5
torques.
b. for flange whizlock
nuts and screws - use t 35% of
grade 5 torques.
3. Unless otherwise
noted on assembly
drawings, all torque
values must meet this specification.
Common Hardware Types
HexHead Capscrew
CarriageBolt
Washer
Lockwasher
O
HexNut
Wrench
& Fastener
Size Guide
o o 0 ©
1/4" Bolt or Nut
5/16" So# or Nut
3/8" Bolt or Nut
7/16" Solt or N_
Wnench--7!16"
Wrench--I/2"
Wrench_/16"
Wrench
(Belt)_/8"
Wrench
(NUt)--11/16
_
M6 Bell et Nut
M8 Belt or Nut
MtO Bolt
or NUt
M12 Belt
Or NUt
Wrench--lOrnm
Wn_nch--13mm
W_rtch--17ram
Wrench--19mrn
1/2"
Bo_ Or Nut
Wrench_3/4"
M14 Bo[t or Nut
Wrench--22 mm
PTS - 52

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