NATO Codification

CMCA(UK) is the UK's exclusive NATO Codification Contractor, trusted by the UK National Codification Bureau (UK NCB) to create and maintain NATO Stock Numbers (NSNs) for equipment entering the Ministry of Defence supply chain. If your organisation supplies equipment or spare parts under an MoD contract, we provide the specialist codification expertise required to ensure compliance with NATO standards and support successful procurement.


The UK's Exclusive NATO Codification Contractor for the United Kingdom National Codification Bureau (UK NCB).

Since 2014, our specialist team has been trusted exclusively to create, validate and maintain NATO Stock Numbers (NSNs) for equipment and associated spare parts entering the UK Ministry of Defence supply chain.

We support UK NCB, MoD departments, defence manufacturers and suppliers with accurate, compliant and timely NATO Codification services.

What Is NATO Codification?

The NATO Codification System (NCS) is the internationally recognised system used by NATO nations to identify, classify and manage items of supply.

Each item is assigned a unique NATO Stock Number, creating a consistent method of identification across defence procurement, logistics, inventory management and lifecycle support.

For organisations supplying equipment or spare parts into the UK Ministry of Defence supply chain, NATO Codification may form part of the contractual procurement requirement.


Supporting UK NCB

The UK NCB is responsible for NATO Codification within the United Kingdom and manages the UK Codification Support Information System (CSIS).
CSIS contains more than five million NSN records covering equipment used by the UK Armed Forces.
CMCA(UK)’s codification team works on behalf of UK NCB to create, validate and maintain NSN records accurately and efficiently.

Our NATO Codification Services

Since April 2014, we’ve been the UK’s only approved NATO Codification contractor. We support our primary customers with a wide range of NATO Codification services, including:

E-Tasking for NATO Codification 
We Do the Work. You Get the Results.

CMCA(UK) prepares and manages your MOD sponsored NATO Codification E-Tasks from start to finish, helping ensure accurate, compliant and timely submissions. Our E-Tasking service includes:

£40 per line

All-inclusive E-Tasking service for NATO Codification.
Working on a high-volume or long term project?
Contact us to discuss project pricing.

Need NATO Codification Support?

If your equipment or spare parts are entering the UK Ministry of Defence supply chain, speak to our specialist team about your codification requirements.

Delivering Accuracy, Compliance and Confidence

Our aim is to support UK NCB and its customers with the accurate and timely delivery of NATO Stock Numbers.

By combining specialist expertise, proven processes and integrated management systems, CMCA(UK) helps customers meet codification requirements, support successful defence procurement and maintain accurate equipment records throughout the product lifecycle.

If you are not familiar with the e-tasking application, you will find the eLearning Modules below useful.

These modules walk you through how to create and submit new codification requests.

These modules guide you through how to raise post codification requests such as adding interest to existing UK items, transfer items from one inventory system to another, and much more. 

Work with us

Why CMCA(UK)?

CMCA(UK)’s roots are deeply entwined in NATO codification, and our specialist codification services team is the UK’s number one subject matter authority in this area. We deliver all NATO codification on behalf of the UK MoD, creating, allocating and maintaining  NSNs for the military supply chain and MoD project teams.

We’re accredited to the highest quality assurance and cybersecurity standards, including ISO9001 and Cyber Essentials PLUS. By continuously enhancing and improving our service delivery, capacity and capabilities, we provide tailor-made services that can help you optimise your operations, save time and money, minimise systems downtime and maximise the return on investment in your equipment and machinery.