Torque Requirements; Assembling The Rack Hardware; Torque Requirements For Mounting Screws - IBM SAN256B-6 Installation, Service And User Manual

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4 - 10-32 x .5 in. (1.27 cm) Phillips screw with blue Loctite on threads
5 - 10-32 x .63 in.(1.60 cm) Phillips screw with square cone washer for racks that have rails with round
holes
6 - 10-32 clip nut for racks that have rails with round holes
7 - 10-32 retainer nut for racks that have rails with square holes
8 - Alignment washer for racks that have rails with square holes
9 - 6-32 x .25 in. (.635 cm) Phillips screw

Torque requirements

Use the following torque settings when tightening screws that secure the rack mount kit and device to
the rack.
Table 11. Torque requirements for mounting screws
Screw size
6-32 x .25 in. (.635 cm) Phillips screw
10-32 x .63 in.(1.60 cm) Phillips screw

Assembling the rack hardware

Procedure
1. Determine how the device can be oriented in the rack so that the nonport side has access to intake air
(cool).
2. Install clip nuts or retainer nuts (as shown in the previous figure) in rack rail locations shown in the
following figure. These nuts will secure the 10-32 screws that mount the Port Side Exhaust Kit shelf
and device to the rack. For rails with round holes, use clip nuts. For rails with square holes, use
retainer nuts. Note that the following figure shows relative positions for these nuts in the rack rails to
mount the shelf and device. You may mount the shelf and device in 9U of rack space higher or lower
in the rack than shown.
28
SAN256B-6 Installation, Service, and User Guide
Torque
8.75 in-lb (10 cm-kg)
32 in-lb (36.86 cm-kg)

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