Home › CFR › Title 48 › Part 31648 CFR Part 316 — Types of ContractsSubpart 316.3 — Cost-Reimbursement Contracts§ 316.307— Contract clauses.Subpart 316.5 — Indefinite-Delivery Contracts§ 316.505— Ordering.Subpart 316.6 — Time-and-Materials, Labor-Hour, and Letter Contracts§ 316.603— Letter contracts.§ 316.603-3— Limitations.