Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW
The SPACER,SLEEVE is a the manufacturer industrial component. Key specifications include end_item_identification: MK21MOD1. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-01-172-4064, indicating validated use in U.S.
government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.