• Part 1600 [§ 1600.1 - § 1600.37] - PART 1600—EMPLOYEE CONTRIBUTION ELECTIONS, INVESTMENT ELECTIONS, AND AUTOMATIC ENROLLMENT PROGRAM

• Part 1601 [§ 1601.1 - § 1601.53] - PART 1601—PARTICIPANTS' CHOICES OF TSP FUNDS

• Part 1603 [§ 1603.1 - § 1603.3] - PART 1603—VESTING

• Part 1604 - PART 1604 [RESERVED]

• Part 1605 [§ 1605.1 - § 1605.31] - PART 1605—CORRECTION OF ADMINISTRATIVE ERRORS

• Part 1606 - PART 1606 [RESERVED]

• Part 1620 [§ 1620.1 - § 1620.46] - PART 1620—EXPANDED AND CONTINUING ELIGIBILITY

• Part 1630 [§ 1630.1 - § 1630.18] - PART 1630—PRIVACY ACT REGULATIONS

• Part 1631 [§ 1631.1 - § 1631.43] - PART 1631—AVAILABILITY OF RECORDS

• Part 1632 [§ 1632.1 - § 1632.11] - PART 1632—RULES REGARDING PUBLIC OBSERVATION OF MEETINGS

• Part 1633 [§ 1633.1 - § 1633.1] - PART 1633—STANDARDS OF CONDUCT

• Part 1636 [§ 1636.101 - § 1636.999] - PART 1636—ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE FEDERAL RETIREMENT THRIFT INVESTMENT BOARD

• Part 1639 [§ 1639.1 - § 1639.60] - PART 1639—CLAIMS COLLECTION

• Part 1640 [§ 1640.1 - § 1640.6] - PART 1640—PERIODIC PARTICIPANT STATEMENTS

• Part 1645 [§ 1645.1 - § 1645.6] - PART 1645—CALCULATION OF SHARE PRICES

• Part 1650 [§ 1650.1 - § 1650.64] - PART 1650—METHODS OF WITHDRAWING FUNDS FROM THE THRIFT SAVINGS PLAN

• Part 1651 [§ 1651.1 - § 1651.19] - PART 1651—DEATH BENEFITS

• Part 1653 [§ 1653.1 - § 1653.36] - PART 1653—COURT ORDERS AND LEGAL PROCESSES AFFECTING THRIFT SAVINGS PLAN ACCOUNTS

• Part 1655 [§ 1655.1 - § 1655.21] - PART 1655—LOAN PROGRAM

• Part 1690 [§ 1690.1 - § 1690.15] - PART 1690—THRIFT SAVINGS PLAN

• Part 1691-1699 - PARTS 1691-1699 [RESERVED]