A comprehensive list of raw materials, components, and sub-assemblies required to manufacture a finished product, along with quantities and specifications.
A BOM is fundamental to manufacturing and production planning. It defines the product structure in a hierarchical format — from the finished good down to individual raw materials. BOMs are used for procurement planning, cost estimation, inventory management, and production scheduling. Multi-level BOMs show sub-assemblies within sub-assemblies, while single-level BOMs show only direct components. Accurate BOMs are critical for MRP (Material Requirements Planning) systems.
A BOM for a wooden chair lists: 4x Chair legs (Teak, 18"), 1x Seat board (Plywood, 16"×16"), 1x Back panel (Plywood, 16"×12"), 16x Wood screws (#8, 2"), 1x Varnish (200ml), 1x Sandpaper sheet. Total material cost: ₹850.
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A single-level BOM lists only the direct components of a product. A multi-level BOM shows the complete hierarchy — including sub-assemblies and their components — like a tree structure. Multi-level BOMs are essential for complex manufacturing.
Inaccurate BOMs lead to wrong material orders, production delays, cost overruns, and excess inventory. Even a 1% error rate in BOM data can cause significant waste in manufacturing operations.
The direct costs attributable to the production or purchase of goods sold by a company during a specific period.
A ratio that measures how many times a company's inventory is sold and replaced over a specific period, indicating sales efficiency and inventory management.
The inventory level at which a new purchase order should be placed to replenish stock before it runs out, accounting for lead time and demand.
A unique alphanumeric code assigned to each distinct product or variant in inventory, used for tracking, ordering, and managing stock levels.
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