Kit
Definition
A kit is a grouped set of components picked and issued together as one unit — either staged for a production order or sold as a bundled item — so everything needed for assembly or use arrives complete.
In Practice
In manufacturing, kitting pulls all components for a work order from stock and delivers them to the line as a verified full set, exposing shortages before the order starts instead of mid-build. In fulfillment, a kit is a sellable bundle — a camera body, lens, battery, and bag under one SKU — assembled either ahead of demand (kit-to-stock) or as orders arrive (kit-to-order).
Kitting trades labor and space for flow: it adds a picking and staging step, but assembly runs faster and horizontal dependency is managed in the warehouse rather than on the line. Systems handle kits through a BOM whose components backflush when the kit is issued or sold; phantom BOMs are the common technique when the kit itself is never stocked.
Frequently Asked Questions
What is the difference between kit-to-stock and kit-to-order?
Kit-to-stock builds bundles ahead of demand and stores them as finished SKUs — fast to ship but the components are locked into that configuration. Kit-to-order assembles the bundle when an order arrives, keeping components flexible for other uses at the cost of fulfillment time. High-mix operations usually prefer kit-to-order.
Why kit components for production orders?
Kitting verifies the full set exists before work starts — a 39-of-40-parts situation is caught in the warehouse, not discovered mid-assembly. It also cuts line-side clutter, reduces picking errors through one controlled process, and gives clean inventory transactions when the kit issues to the order.
Related Terms
A picking list (pick list) is a document or digital task list that tells a warehouse operator exactly which items, quantities, and locations to pick to fulfill one or more orders, sequenced to minimize travel.
Phantom Bill of MaterialA phantom bill of material defines a subassembly that exists in the product structure but is never stocked — it is built and immediately consumed in the parent, so MRP plans through it directly to its components.
Manufacturing OrderA manufacturing order (production order or work order) is the authorization to produce a specific quantity of an item by a due date, carrying the bill of material and routing that define the components and operations required.
Pick and PackPick and pack is the warehouse fulfillment process of retrieving individual items for an order from storage locations and packing them into cartons for shipment. It is the core labor activity in most order fulfillment operations.
Horizontal DependencyHorizontal dependency is the relationship among components at the same level of a bill of material: because all of them are required to build one parent unit, a shortage of any single component blocks the assembly of all the others.