Repair Part [spare part, service part, or replacement part] Consumable bits and pieces, that is, individual parts or non-repairable assemblies, required for the repair of spare parts or major end items. These interchangeable consumable repair parts are kept in a benchstock inventory and used for the repair or replacement of a failed part or component. Repair parts are an important feature of biomedical equipment management and supply chain management, often comprising dedicated benchstock and common stock parts management systems.