Glossary
Contract Manufacturing Definition
Contract manufacturing is a production arrangement in which one company makes parts or assemblies to another company's specifications and commercial agreement.
Contract manufacturing is an arrangement in which one company produces parts, products, or assemblies to another company's specifications and commercial agreement. The customer commonly retains product requirements, while the manufacturer provides some combination of equipment, labor, process engineering, quality control, and supply-chain execution.
Contract Manufacturing Explained
The customer defines requirements; the contract manufacturer supplies capacity and process execution. In build-to-print work, an automotive bracket is made to a released drawing, and the customer keeps design authority.
No single universal legal definition exists; terms vary by jurisdiction and agreement.
Contract Manufacturing Models and Typical Terms
| Item | Typical range | Source |
|---|---|---|
| Dimensional tolerance | Per customer drawing; no universal range | Released drawing and applicable standard |
| Quality acceptance | Contract-specific | Quality agreement, purchase order, inspection plan |
| Delivery quantity | Contract-specific | Statement of work and purchase order |
- Build-to-print: customer owns design responsibility.
- Build-to-specification: supplier engineering input; scope and liability must be defined.
- Turnkey manufacturing: supplier manages materials and production.
- Consignment manufacturing: customer supplies materials; inventory control is more complex.
- Design and manufacturing services: integrated development; requires clear intellectual-property terms.
How Contract Manufacturing Is Used in Real Projects
It is used when a buyer needs production capacity without owning the plant. The agreement sets the commercial and quality boundaries.
- Approve manufacturing and inspection plans.
- Use FAI, PPAP, or validation as applicable.
- Define packaging, freight, and inventory terms.
Related terms
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FAQ
Common questions
Who owns the design?
The contract and statement of work determine ownership; build-to-print commonly leaves design authority with the customer.
Can a contract manufacturer source materials?
Yes, if the agreement defines approved sources, substitutions, traceability, and responsibility.
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