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.
To Next Page
Loading...