HP 10622 Best practices for HP 10000 Series and HP 10000 G2 Series Racks - Page 47

Appendix b: torque values Table 10 provides torque values for specific rack components. Table 10. Torque values (specific) Component All M6 rack hardware Pallet bracket hold-down bolts All Phillips-head screws All M5-M6 slotted-torx head screws Torque (in-lb) 20 in-lb 150 in-lb 20 in-lb 20 in-lb (minimum) / 60 in-lb (maximum) Torque (N-m) 2.2594 N-m 16.9455 N-m 2.2594 N-m 2.2594 N-m (minimum) / 6.7782N-m (maximum) In addition to any specific torque value given in this document, the following tables provide torque values that can be used to prevent over-torquing a fastener. The torque values listed in Tables 11 and 12 assume SAE (Society of Automotive Engineers) Grade 2 hardware or ISO (International Standards Organization) 898 property classes less than 8.8 hardware (for example, 4.6, 4.8, 5.6). Steel hardware for both male and female threads is assumed. For ISO 8.8 or 12.9 and SAE Grade 5 or 8, torque should be determined by the application. Table 11. Torque values (standard hardware) Measurement #4 #6 #8 #10 1/4-20 3/8-16 1/2-13 Torque (in-lb) 6 in-lb 10 in-lb 19 in-lb 27 in-lb 66 in-lb 240 in-lb 585 in-lb Torque (N-m) 0.67782 N-m 1.1297 N-m 2.14643 N-m 3.05019 N-m 7.45602 N-m 27.1128 N-m 66.08745 N-m Table 12. Torque values (metric hardware) Measurement M3 M4 M5 M5.5 self tap M6 M8 M10 M12 Torque (in-lb) 7.6 in-lb 17 in-lb 36 in-lb 40 in-lb 60 in-lb 147 in-lb 292 in-lb 509 in-lb Torque (N-m) 0.858572 N-m 1.92049 N-m 4.06692 N-m 4.5188 N-m 6.7782 N-m 16.60659 N-m 32.98724 N-m 57.50173 N-m 45