This document serves as a guideline for developing and using good part numbering techniques within a manufacturing company. It addresses accidental and overly complex part numbering schemes which may become unmanageable and highlights that a part number is generally NOT a description of the part.
A part number should not attempt to be descriptive as it could lead to complications over time, such as changes in manufacturing or purchasing processes. The focus is on using the part number as a primary index within an ERP system.
It is best practice to limit part numbers to letters (A-Z), numbers (0-9), and possibly a dash (-).
Only use characters that are compatible with bar coding systems, specifically Code-39.
Characters like spaces, wildcards (* ? ~), quotes (' "), and other non-standard characters should be avoided to maintain compatibility and prevent errors in various systems.
Type | Description |
---|---|
Manufacturer Part Number | Different manufacturers might assign different numbers to the same part. |
Supplier Part Number | Suppliers might have different part numbers for the same manufacturer's part. |
Customer Part Number | Customers may have their unique part numbers which can be cross-referenced in the ERP system. |
Internal Part Cross-reference | Allows for secondary internal numbering for ease of reference. |
Using your own part numbering system instead of relying on external numbers enhances consistency and eliminates duplicate issues.
Part numbers should be of uniform length and format, ideally all numeric with a dash. This helps in making them manageable, memorable, and avoids confusion.
Example format: 12345-1234-00
- The first segment (12345) represents a semi-meaningful classification of the part.
- The second segment (1234) is a sequential value.
- The third segment (00) is a modifier or placeholder to ensure consistent length.
Type | Example | Description |
---|---|---|
Wire | 10112-2301-00 | Copper wire with regular red insulation, 23 gauge |
Bolt | 20145-6789-00 | Hex bolt, size 45, 6789 mm long |
ERP systems like Epicor ERP offer various options to enforce part numbering rules through user interface adjustments and Business Process Management (BPM) rules. These can help ensure part numbers are created without spaces, in the correct length, and with proper formatting.