This is used by States, local governments, and Federally recognized Indian Tribal governments to apply for Federal financial assistance. SF-424 requires basic information about the applicant (name, address, telephone number, type of applicant, etc.), including a list of sources of proposed funding and a description of the proposed project.
US Code:
2 USC 200 Part D(2)
Name of Law: Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards