This is a contract for the procurement of a "Retainer Nut" as a SPECIAL EMPHASIS material (Level I/SUBSAFE) for a crucial shipboard system, where failure could result in serious injury, loss of life, or loss of the ship. The final delivery of material is required on or before 365 days after the effective date of the resulting contract. The work involves strict quality assurance, including a required ISO-9001 quality system, extensive material traceability, and certifications for chemical and mechanical analysis. Performance requires Government Quality Assurance at the source, and the place of performance cannot be changed without authorization.