This is a contract for the supply of a 2 1/2 NPS, 90-degree elbow made from specific copper alloys for a crucial Navy shipboard system, designated as SPECIAL EMPHASIS material requiring stringent quality controls. The final delivery of material must occur on or before 365 days after the effective date of the resulting contract. The performance location involves Portsmouth Naval Shipyard, and suppliers must be prepared for Government Quality Assurance at source. The contract is a total small business set-aside and is rated as a priority "DO" order for national defense.