Glossary

OEM (Original Equipment Manufacturer)

An OEM is a company that designs and manufactures equipment or components sold to other companies for use in their products or operations.

Planning, Procurement and Resilience Supplier and Work-Order Orchestration

An OEM (Original Equipment Manufacturer) is a company that designs and manufactures equipment, machines, systems, or components that are used, integrated, or resold by another company. In industrial and regulated manufacturing environments, OEMs commonly supply production machinery, automation systems, test equipment, and specialized components that become part of a manufacturer’s production assets or end products.

How OEM is used in manufacturing and operations

In plant operations, the term OEM typically refers to the original producer of:

Production equipment such as CNC machines, presses, robotics, or inspection systems
Control and automation hardware or software (PLCs, HMIs, drives, industrial PCs)
Measurement, inspection, and test systems used in quality and compliance workflows
Specialty components or subassemblies integrated into finished products

OEMs often provide technical documentation, maintenance procedures, spare parts catalogs, and recommended operating parameters that are referenced in MES, ERP, CMMS, and quality systems. In regulated environments, OEM manuals and specifications may be linked to validated processes, training records, and equipment qualification files.

OEM in supply chain and IT/OT contexts

Within supply chain and systems integration, OEM can also denote:

OEM supplier: The company that supplies original equipment or parts directly to the manufacturer or to tiered suppliers.
OEM software or firmware: Software delivered by the equipment manufacturer, sometimes customized or rebranded by another vendor.
OEM parts and spares: Replacement parts sourced from the original manufacturer, often distinguished from third-party or aftermarket parts.

IT and OT teams may track OEM details in asset records, including model, firmware versions, and lifecycle status, to support cybersecurity, change control, and obsolescence management.

What OEM is not

It is not the same as an aftermarket supplier, which provides compatible parts or equipment not produced by the original manufacturer.
It is not inherently a quality or certification designation; it identifies the original manufacturer, not compliance status.
It is not limited to any single industry; the term applies across automotive, aerospace, medical devices, electronics, and other sectors.

Common confusion

OEM vs. VAR (Value-Added Reseller): An OEM designs and manufactures the original product. A VAR usually adds services, integration, or software on top of OEM equipment and resells it.
OEM vs. Tier supplier: In some industries, the OEM is the brand owner of the final product (for example, an aircraft or vehicle maker), while tier 1 and tier 2 suppliers provide components. In other cases, those suppliers themselves act as OEMs for specific subsystems.
OEM part vs. generic part: An OEM part comes from the original manufacturer of the equipment or component, while a generic or equivalent part comes from an alternate manufacturer.

Operational relevance

In day-to-day industrial operations, OEM information is used to:

Define equipment capabilities and constraints in routing, capacity, and scheduling systems
Support maintenance planning, calibration intervals, and spare parts management
Reference original specifications in process validation, first article inspection, and change control
Assess cybersecurity posture and patching requirements for OT assets based on OEM advisories

Accurate identification of the OEM in asset and master data helps ensure that documentation, updates, and risk assessments are traceable back to the original equipment design source.

The OASIS database is an IAQG-managed directory of organizations certified to AS9100-series standards and the CBs and auditors that oversee them. In supplier control, OASIS is primarily used to verify certification status, scope, and audit history of aerospace suppliers. It does not replace your own supplier qualification, performance monitoring, or risk management processes, and the accuracy and usefulness of data depend on how reliably CBs maintain records.

How does shared execution data change supplier performance reviews and SRM processes?

Shared execution data shifts supplier performance reviews from periodic, disputed scorecards to continuous, evidence-based collaboration. It can improve fairness and speed of SRM decisions, but only if integrations are robust, data definitions are aligned, and change control, access, and validation are handled carefully across ERP, MES, QMS and supplier portals.

What is the difference between a PO and a work order?

In industrial and regulated environments, a purchase order (PO) is a commercial document used to buy goods or services, typically from external suppliers, while a work order authorizes execution of work, usually within the plant or by a service provider. Both must align with MRP/ERP data, change control, and traceability, and confusion between them can cause planning, cost, and compliance issues.

What is the job description of order management?

Order management in regulated manufacturing is a cross-functional responsibility, not a single role. It covers how customer orders are captured, validated, scheduled, tracked, changed, and closed across ERP, MES, planning, quality, and logistics. Scope, tooling, and ownership depend heavily on plant systems, integration quality, and process maturity.

Related Glossary

How can we connect supplier non-conformance data to our internal quality and work order records?

Connecting supplier non-conformance data to internal quality and work orders links incoming issues to production impact and formal CAPA.

order status

A coded indication of the current state or milestone of a production or purchase order in an ERP, MES, or related system.