Appendix A Torque Specifications - Emerson VILTER VSS Installation, Operation And Service Manual

Appendix A • Torque Specifications
Torque Specifications
Refer to the following tables for torque specifications.
TYPE
BOLT
SAE GRADE 2
COARSE (UNC)
SAE GRADE 5
COARSE (UNC)
SAE GRADE 5
FINE (UNF)
SAE GRADE 8
COARSE (UNC)
SOCKET HEAD
CAP SCREW
(ASTM A574)
COARSE (UNC)
1) Torque values on this sheet are not to override those given on the individual drawings.
2) When using loctite, the torque value on this sheet are only accurate if bolts are tightened
NOTES: immediately after loctite is applied.
* The proof strength of Grade 2 bolts is less for sizes 7/8 and above and therefore the torque
values are less than smaller sizes of the same grade.
Table A-2. Torque Specifications for 17-4 Stainless Steel Fasteners (ft-lbs)
Type Bolt/Nut
Hex & Socket Head
Cap Screws
Nut
Continue use of red loctite #271 (VPN 2205E) on currently applied locations. Use blue loctite #243
VSS/VSR/VSM/VSH/VSSH Compressor • Installation, Operation and Service Manual • Emerson • 35391S
Table A-1. Torque Specifications (ft-lbs)
HEAD
MARKINGS
#10
5
Head
Markings
¼"
#10
3 8
- 8
(VPN 2205F or 2205G) on all remaining locations.
NOMINAL SIZE NUMBERS OR INCHES
1/4 5/16 3/8 7/16
5 10 18 29
8 16 28 44
16
11 22 39 63
13 26 46 73
Nominal Size Numbers or Inches
5/16" 3/8" 7/16"
14 25 40
- 25 -
NOTE:
1/2 9/16 5/8 3/4
44 63 87 155
68 98 135 240
96 138 191 338
112 155 215 380
½" 9/16" 5/8"
60 101 137
- - -
7/8
150*
387
546
614
¾"
245
-
A − 1