Be consistent across all similar part types because the information will help make sure the right quantities are procured and delivered to the production line. It is common to use ‘each’, but standard measures like inches, feet, ounces, and drops are also suitable classifications. Unit of Measure-Classify the measurement in which a part will be used or purchased.Quantity-Record the number of parts to be used in each assembly or subassembly to help guide purchasing and manufacturing decisions and activities.Description-Provide a detailed description of each part that will help you and others distinguish between similar parts and identify specific parts more easily.This is helpful during new product introduction (NPI) because it allows you to easily track progress and create realistic project timelines. New parts that have not yet been approved can be classified as ‘Unreleased’ or ‘In Design’. For parts in production, it is common to use a term like ‘In Production’ to indicate the stage of the part. Phase-Record what stage each part is at in its lifecycle.This will help you identify parts more easily. Part Name-Record the unique name of each part or assembly.Whichever scheme you use, make sure you avoid creating multiple part numbers for the same part. It is common for manufacturers to choose either an intelligent or non-intelligent part numbering scheme. Part Number-Assign a part number to each part or assembly in order to reference and identify parts quickly.This allows anyone with an understanding of the BOM structure to quickly decipher the BOM. BOM Level-Assign each part or assembly a number to detail where it fits in the hierarchy of the BOM.Whether you are creating your first bill of materials or are looking for ways to improve how you create a bill of materials, here is a high-level list of information to include in your BOM record: What to include in an effective bill of materialsīecause one of the main functions of the BOM is to ensure that the product is built right, it is best to include specific pieces of product data in the BOM record. Any time the BOM is shared with a contract manufacturer (CM) or supplier, it should be the latest released revision to prevent unnecessary production mistakes and product launch delays. And for companies that rely on supply chain partners, it’s important to provide effective revision control throughout the new product development and introduction (NPDI) process. The BOM helps guide positive results as products evolved from design, through development, and ultimately volume production-so it is critical to create and share an accurate and up-to-date version of the BOM with all teams. Furthermore, engineering teams will create engineering bill of materials (EBOMS) and the manufacturing teams will rely on manufacturing bill of materials (MBOMS). All manufacturers building products, regardless of their industry, get started by creating a bill of materials (BOM).īecause the bill of materials pulls together all sorts of product information, it is common that several disciplines (design and engineering, document management, operations, manufacturing, purchasing, contract manufacturers, and more) will collaborate on the product information contained within the BOM to enable accurate production. The bill of materials and associated records describe the materials required to source and build an assembly. Depending on the product, it may include mechanical (hardware), electrical (e.g., ICs, PCBAs), software, and related documents and drawings. The BOM can be thought of as the recipe used to create a finished product, presented in a hierarchical format. A bill of materials (BOM) is a comprehensive list of parts, items, assemblies, subassemblies, intermediate assemblies, documents, drawings, and other materials required to create a product.
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