SMARC T335x Carrier Board Hardware Design Guide, Document Revision 1.2
SMTSO (“surface mount technology stand offs”). The shortest standard length
offered is 2mm. A custom part with 1.5mm standoff length, M2.5 internal thread,
and 5.56mm standoff OD is available from PEM. The Carrier PCB requires a
4.22mm hole and 6.2mm pad to accept these parts.
Other vendors such as RAF Electronic Hardware (www.rafhdwe.com) offer
M2.5 compatible swaged standoffs. Swaged standoffs require the use of a
press and anvil at the CM. Their use is common in the industry. The standoff
OD and Carrier PCB hole size requirements are different from the PEM
SMTSO standoffs described above.