CFR > Title 5 > Chapter VI > Part 1640 > § 1640.1 5 CFR 1640.1 – Definitions Current as of: 2024 | Check for updates | Other versions Definitions generally applicable to the Thrift Savings Plan are set forth at 5 CFR 1690.1. Ask a legal question, get an answer ASAP!Click here to chat with a lawyer about your rights. Previous sectionNext section Part 1640 Contents