what are the key components of a bom 
a bom must include the name of the product or assembly raw materials required with quantity and units of measure sub assemblies part numbers with their names and descriptions unit costs and product quantity the bottom linea bill of materials is an important part of the engineering and manufacturing process that lists the parts and materials required to build a product an accurate bom helps reduce waste streamline production and ensure the availability of necessary parts bills of materials help companies manage their operations costs 