Spare Parts Know How

Spare Parts Inventory Management Training

  • Log-In
  • Individual
    • Open Access
    • Practitioner Toolkit
    • Compare Options
  • Organization/Team
    • Foundations for Teams
    • Foundations Playbook
    • Operations Playbook
    • Enterprise Access
    • Compare Options
  • Targeted Improvement Programs
    • Capability Programs
    • Advisory Support
    • Inventory Optimization Software
    • Data Management Services
  • Resources
    • The Spare Parts Decision Framework
    • Spare Parts Capability Playbooks
    • Roadmap for Spare Parts Decision Capability
    • Site Capability Assessment
    • Spare Parts Management Checklists
    • Obsolescence Risk Calculator
    • Criticality Assessment Tool
    • ROP/ROQ Calculator
    • Last Time Buy Calculator
    • Books
    • Practitioner Playbook Digital Library
  • Contact
  • About
    • Past and Current Users
    • Testimonials
    • FAQs
    • Phillip Slater

Stock Keeping Unit (SKU) Definition and Explanation

September 24 spkhadmin

Stock Keeping Unit Understanding the definitions used in spare parts inventory management is vitally important.

For without a common understanding of terms it is difficult to communicate effectively.

Imagine what happens when someone uses a term such as SKU in a conversation or email and the person listening or reading doesn’t understand that term. It is rare for people to just own-up and admit that they don’t understand the term being used.

That’s why, at SparePartsKnowHow.com, we keep and update a glossary fo terms. This to help everyone get better at communicating their needs and intentions in spare parts inventory management.

Stock Keeping Unit (SKU) Definition

Stock Keeping Unit (SKU) is an inventory management term that

identifies and distinguishes a single inventory item from all the other items in that inventory. In other words, it is a way to refer to individual inventory items.

For example, an inventory may consist of 2,000 different types of items – each of which will also be an individual stock keeping unit. Stock keeping unit is not a way to identify individual items of the same type or part.

The term stock keeping unit is often shortened using the acronym SKU.

Sometimes the term SKU is used in reference to the specific unique identifer code used to identify the individual item.

Stock Keeping Unit Explanation

There are several reasons why it is important to identify spare parts inventory items individually as different SKUs:

  1. It can be used to track the history of the part and from that help you to work on spare parts inventory optimization
  2. It helps your maintenance team more easily identify individual parts
  3. When tied to spare parts location information it helps your team more easily locate the parts in your storeroom/warehouse
  4. It helps your procurement or purchasing team ensure that they are purchasing the same part in future
  5. It helps ensure that your costs are appropriately allocated and reported
  6. It simplifies you stock take and cycle count activity

There are a number of different attributes that can be used to identify different SKUs. These are not just limited to physical attributes such as the physical dimensions or color or design or model but can also relate to supply attributes such as the manufacturer or supplier or packaging.

However, for spare parts used for operations and maintenance support it is more typical to identify the SKU by its physical attributes as it is these that matter most when in use. For example, a bearing may be described by its type and physical dimensions without necessarily differentiating between that type and size of bearing from different suppliers.
 
 
 
Click here for information on our Practitioner Playbook.
 
 


 
 
 
Posted by: Phillip Slater
 

Glossary

Make Better Spare Parts Decisions

Decide what to stock, how much to hold, and how to tackle excess inventory using practical tools, templates, and specialist guidance.
Explore the Practitioner Toolkit...

Get Your Team Making Consistent Decisions

Align maintenance, procurement, engineering, and stores around shared spare parts decision principles to improve inventory performance. Explore Foundations for Teams...

Turn Improvement Goals into Results

Reduce excess inventory, improve stocking policies, or standardize practices across sites with a targeted program combining team development, practical tools, and implementation support. Explore Capability Programs...

Latest Blog Posts

  • Why Spare Parts Inventory Optimization Doesn’t Stick
  • AI Spare Parts Technology Won’t Fix Weak Decisions
  • Twenty-Five Years of Better Spare Parts Decisions
  • The Cost of Inconsistent Spare Parts Decisions
  • Spare Parts Capability Cannot Reside in One Person
  • Email
  • LinkedIn
  • YouTube

Copyright © 2026 IPIAIGHT PTY LTD.