Bill of materials (parts list) content Which information should a standard mechanical parts list include to support purchasing, manufacturing, and inspection?

Introduction / Context:
The parts list (BOM) is the backbone of procurement and assembly. It ties item balloons to unique identifiers, defines materials, and specifies required quantities so the correct items are purchased and assembled in the right numbers.

Given Data / Assumptions:

• Each item must be uniquely identified and described.
• Material information affects cost, process, and compliance.
• Quantities determine ordering and kit preparation.

Concept / Approach:
A robust parts list includes at minimum: item number, part number, description, material or specification, and quantity. Additional fields may include revision, finish, mass, and sourcing notes. These fields enable accurate MRP/ERP integration and reduce assembly errors.

Step-by-Step Solution:

Verification / Alternative check:
Cross-check the BOM with the CAD assembly and with purchasing to ensure materials and quantities are feasible and approved.

Why Other Options Are Wrong:
Each individual item (part number, material, quantity) is necessary; the correct choice is the aggregate “all of the above.”

Common Pitfalls:
Omitting revision levels or using ambiguous descriptions causes procurement mistakes and rework.

Final Answer:
all of the above