Bill of Materials (BOM) isn’t one-size-fits-all. Each type serves a unique purpose across different departments, from design to manufacturing to sales.
Here’s a break down of 10 essential BOM types, who creates them, where they’re used, and when to use each.
1. Assembly BOM
Tailored to specific assembly stages. Created by industrial engineers and used in workstations or operator guides.
✔️ Use when documenting parts needed for a particular step.
2. Phantom BOM
A logical grouping, not physically assembled. Helps simplify production planning in ERP/MES.
✔️ Use when managing complex subassemblies.
3. Procurement BOM
Focuses only on vendor-sourced parts. Essential for procurement and sourcing workflows.
✔️ Use when planning bulk purchases or vendor negotiations.
4. Sales BOM
Shows how kits or bundles are sold. Used by sales or pre-sales teams in CPQ and order systems.
✔️ Use when bundling options or accessories.
5. CBOM (Configurable BOM)
Supports customizable product variants. Created by engineering with product manager input.
✔️ Use for managing product families or mass customization.
6. SBOM (Service BOM)
Lists parts required for repairs or maintenance. Ideal for service and aftermarket teams.
✔️ Use when delivering field servicing or repair kits.
7. MBOM (Manufacturing BOM)
Describes how a product is fabricated on the shop floor. Created by manufacturing engineers.
✔️ Use for production planning, fabrication, and routing.
8. EBOM (Engineering BOM)
Derived from CAD designs. Used in validation and simulations.
✔️ Use when working directly from design assemblies.
9. Costed BOM
Adds financial data for budgeting or quoting. Used by finance, estimating, or costing teams.
✔️ Use when calculating the total cost of a variant.
10. Design BOM (Concept BOM)
High-level breakdown used in early design. Helps in feasibility and costing.
✔️ Use before CAD modeling to brainstorm initial part needs.
This map helps engineers, managers, and product teams ensure the right BOM is used at the right time boosting clarity, cost efficiency, and collaboration.
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