This is a restricted solicitation for commercial items, anticipated to result in a firm-fixed-price purchase order awarded on a sole source basis to Leonardo SPA. It covers various aircraft parts including bolts, washers, adapters, a bearing housing, and a support, all requiring clear traceability to the OEM Siai Marchetti Srl. A Certificate of Conformance must be furnished in accordance with FAR clause 52.246-15. No drawings, specifications, or schematics are available from the USCG. Only quotations with shipping terms of F.O.B. Destination or F.O.B. Origin will be accepted.