IBM EXP15 Hardware Maintenance Manual page 60

Note: Use clip nuts if your rack has round holes. If
your rack has square holes, you can use the
rack insertion tool or a flat-blade screwdriver
to install cage nuts.
Cage
nut
2. On the rail marked "L", remove and save the small
screw 1 ; then, loosen the four large screws 2 .
3. Hold the rail against the outside of the left rack
mounting flange and loosely insert the front black hex
screws 3 .
4. Extend the rail outside of the rear rack mounting
flange; then, install and tighten both rear black hex
screws 1 .
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IBM Netfinity EXP15, EXP200, EXP500 HMM
Clip
nut
L
L