IBM AA-RWF3A-TE - Manual (Page 46)

Figure 14 Assembling the outer rails (HP System/e Rack)
5. Depending on the device model, the SAN Switch Rack Mount Kit requires different
screw types for securing the inner rails. Use Table 5 to determine the number and
screw type for your specific switch.
CAUTION:
Do not use any screws other than those provided. Using longer screws
than those provided can cause damage to internal components.
Table 5 Number of screws required to assemble the inner rails
SAN Switch #8-32 x 5/16-inch screws #8-32 x 3/16-inch screws
2/32 N/A 12 (Six per rail)
4/8, 4/16 Ten (Five per rail) N/A
4/32 Ten (Five per rail) N/A
4/64 Ten (Five per rail) N/A
4/32B Six (Three per rail) N/A
46 Installing and configuring SAN Switches