• Part 600 - PART 600 [RESERVED]

• Part 601 [§ 601.1 - § 601.9] - PART 601—CLASSIFICATION AND DECLASSIFICATION OF NATIONAL SECURITY INFORMATION

• Part 604 [§ 604.100 - § 604.605] - PART 604—NEW RESTRICTIONS ON LOBBYING

• Part 605 [§ 605.0 - § 605.90] - PART 605—NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE

• Part 606 [§ 606.1 - § 606.99] - PART 606—ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE NATIONAL SCIENCE FOUNDATION

• Part 607 [§ 607.1 - § 607.12] - PART 607—SALARY OFFSET

• Part 608 [§ 608.1 - § 608.4] - PART 608—CLAIMS COLLECTION AND ADMINISTRATIVE OFFSET

• Part 611 [§ 611.1 - § 611.13] - PART 611—NONDISCRIMINATION IN FEDERALLY-ASSISTED PROGRAMS OF THE NATIONAL SCIENCE FOUNDATION—EFFECTUATION OF TITLE VI OF THE CIVIL RIGHTS ACT OF 1964

• Part 612 [§ 612.1 - § 612.11] - PART 612—AVAILABILITY OF RECORDS AND INFORMATION

• Part 613 [§ 613.1 - § 613.7] - PART 613—PRIVACY ACT REGULATIONS

• Part 614 [§ 614.1 - § 614.8] - PART 614—GOVERNMENT IN THE SUNSHINE ACT REGULATIONS OF THE NATIONAL SCIENCE BOARD

• Part 615 [§ 615.1 - § 615.7] - PART 615—TESTIMONY AND PRODUCTION OF RECORDS

• Part 617 [§ 617.1 - § 617.16] - PART 617—NONDISCRIMINATION ON THE BASIS OF AGE IN PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE FROM NSF

• Part 618 [§ 618.100 - § 618.605] - PART 618—NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE

• Part 620 [§ 620.1 - § 620.7] - PART 620—CYBERCORPS® SCHOLARSHIP FOR SERVICE (SFS) PROGRAM

• Part 630 [§ 630.100 - § 630.670] - PART 630—GOVERNMENTWIDE REQUIREMENTS FOR DRUG-FREE WORKPLACE (FINANCIAL ASSISTANCE)

• Part 640 [§ 640.1 - § 640.5] - PART 640—COMPLIANCE WITH THE NATIONAL ENVIRONMENTAL POLICY ACT

• Part 641 [§ 641.10 - § 641.22] - PART 641—ENVIRONMENTAL ASSESSMENT PROCEDURES FOR PROPOSED NATIONAL SCIENCE FOUNDATION ACTIONS IN ANTARCTICA

• Part 650 [§ 650.1 - § 650.19] - PART 650—PATENTS

• Part 660 [§ 660.1 - § 660.13] - PART 660—INTERGOVERNMENTAL REVIEW OF THE NATIONAL SCIENCE FOUNDATION PROGRAMS AND ACTIVITIES

• Part 670 [§ 670.1 - § 670.39] - PART 670—CONSERVATION OF ANTARCTIC ANIMALS AND PLANTS

• Part 671 [§ 671.1 - § 671.17] - PART 671—WASTE REGULATION

• Part 672 [§ 672.1 - § 672.24] - PART 672—ENFORCEMENT AND HEARING PROCEDURES

• Part 673 [§ 673.1 - § 673.5] - PART 673—ANTARCTIC NON-GOVERNMENTAL EXPEDITIONS

• Part 674 [§ 674.1 - § 674.7] - PART 674—ANTARCTIC METEORITES

• Part 675 [§ 675.1 - § 675.4] - PART 675—MEDICAL CLEARANCE PROCESS FOR DEPLOYMENT TO ANTARCTICA

• Part 680 [§ 680.10 - § 680.13] - PART 680—NATIONAL SCIENCE FOUNDATION RULES OF PRACTICE

• Part 681 [§ 681.1 - § 681.46] - PART 681—PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS

• Part 689 [§ 689.1 - § 689.10] - PART 689—RESEARCH MISCONDUCT

• Part 690 [§ 690.101 - § 690.124] - PART 690—PROTECTION OF HUMAN SUBJECTS

• Part 691-699 - PARTS 691-699 [RESERVED]