1.1 NMC-Wollard, Inc. Torque Values
SEPTEMBER 30, 2008
CHAPTER 2 MAINTENANCE
PAGE 2
1 SERVICING
Truck Mounted Passenger Stair TMPS-200
Manual No. 307559
The following data is excerpted from SAE Report J1701, March, 1999. The complete
report is available from SAE at www.sae.org. It contains detailed information about
variables for torque management to achieve correct fastener joint tightening. This is an
advisory guide and responsibility for its application lies with the user. Individual application
discretion is recommended.
INCH SERIES TIGHTENING TORQUE, FT-LB
Bolt Size
Grade 2
Dry
Grade 2
Lubed
Grade 5
Dry
Grade 5
Lubed
Grade 8
Dry
Grade 8
Lubed
0.250-28
7
5
10
8
14
11
0.250-20
6
5
9
7
12
9
0.3125-24
13
10
20
15
28
21
0.3125-18
12
9
18
14
25
19
0.375-24
23
17
35
27
50
38
0.375-16
20
15
31
24
44
33
0.4375-20
36
27
56
42
78
59
0.4375-14
32
24
50
38
70
53
0.500-20
55
42
85
64
120
90
0.500-13
49
37
76
32
107
80
0.5625-18
78
59
121
91
171
128
0.5625-12
70
53
109
82
154
115
0.625-18
110
82
170
127
240
180
0.625-11
97
73
150
113
212
159
0.750-16
192
144
297
223
420
315
0.750-10
172
129
269
201
376
282
1.000-12
-
-
704
528
995
746
1.000-8
-
-
644
483
909
681
METRIC TIGHTENING TORQUE, N-m
Bolt
Size
Class 8.8
Dry
Class 8.8
Lubed
Class 9.8
Dry
Class 9.8
Lubed
Class 10.9
Dry
Class 10.9
Lubed
8.0 x 1.25
26.40
19.80
28.50
21.40
36.50
27.30
10.0 x 1.50
52.20
39.20
56.60
42.40
72.20
54.20
12.0 x 1.75
91.00
68.00
99.00
74.00
126.00
94.00
14.0 x 2.00
145.00
109.00
157.00
118.00
200.00
150.00
16.0 x 2.00
226.00
170.00
245.00
184.00
313.00
235.00
20.0 x 2.50
441.00
331.00
478.00
358.00
610.00
458.00
24.0 x 3.00
762.00
572.00
826.00
620.00
1055.00
791.00
30.0 x 3.50
1515.00
1136.00
1641.00
1231.00
2095.00
1572.00
36.0 x 4.00
2647.00
1985.00
2868.00
2151.00
3662.00
2746.00
37° TUBE FITTINGS & PIPE FITTINGS
Dash #
37° Swivel Nut
Ft-Lbs
37°
Jic Flats from
Finger Tight
O-Ring Lock Nut
Ft.-lbs.
Pipe Dia. (Inch)
NPT
Ft.-lbs.
NPT Turns from
Finger Tight
-04
10
2
8
1/4
25
2 ½
-06
20
1 1/4
13
3/8
40
2 ½
-08
40
1
21
½
54
2 ½
-10
60
1
33
-
-
2 ½
-12
80
1
48
3/4
78
2 ½
-16
110
1
63
1
112
2 ½
-20
130
1
-
1 1/4
154
2 ½
-24
160
1
-
1 ½
211
2 ½
-32
250
1
-
2
300
2 ½
Torque Conversion:
Ft-Lbs = 0.7376xN-m N-m = 1.356xFt-Lbs
NOTE:
Do not use these values if a different torque value is given for a specific procedure.
