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STANAG 4761
NATO nations ratifying and implementing safety and suitability for service assessment testing of large calibre ammunition greater than 40 mm
STANAG 4761 is NATO's agreement for participating nations to apply AAS3P-20 when planning and running safety and suitability for service assessment testing of large calibre ammunition greater than 40 mm.
STANAG 4761 is the NATO standardization agreement by which participating nations commit to using AAS3P-20, Edition B, the Allied publication that actually sets out how to plan and run safety and suitability for service (S3) assessment testing of large calibre ammunition greater than 40 mm. The STANAG itself is short: a letter of promulgation, a stated aim, a single clause naming the standard it brings into force, and the ratification and review machinery around it. What an organisation tests against sits in AAS3P-20, a separate publication covered elsewhere in this catalogue, not in this document.
The scope this agreement covers is ammunition greater than 40 mm: that is the line NATO drew when it decided this STANAG, rather than the related STANAG 4629 for non-nuclear munitions generally, applies. Nothing here sets a test threshold, a stimulus level or a safety distance, and none belongs on this page even where it would sit naturally on a supplier's checklist; figures like that live in AAS3P-20 itself.
A STANAG binds nations, not companies. Ratifying nations agree to follow the guidance given in AAS3P-20, Edition B, when defining the safety and suitability for service assessment testing of large calibre ammunition greater than 40 mm, and separately agree to provide on demand the relevant safety and reliability information indicated in AAS3P-20, Edition B, when transferring munitions to other NATO nations. A nation can ratify with reservations and implement on its own timetable, so there is no general answer to whether this STANAG is mandatory - only a contractual one.
The agreement exists so nations can plan and carry out S3 assessment testing and collect evidence across the life of the munition, in order to demonstrate it will be safe for use, as that term is defined in the related AAS3P-01 standard. The document frames this as a question of risk: the acceptability of a safety level rests on the likelihood of a hazardous condition, the likelihood of a resulting mishap, and the severity of its consequences for personnel, materiel and the environment. It describes its own audience as programme managers and service personnel who need basic guidance on planning an S3 programme, once the munition is in NATO service.
This is Edition 2, promulgated 27 May 2025, and it supersedes STANAG 4761 Edition 1 of 27 February
responses and implementation details are recorded through NATO's electronic reporting tool and held in the NATO Standardization Documents Database (NSDD), not in this document.
The STANAG is reviewed in accordance with AAP-03, NATO's own standardization procedures publication, with the result recorded in the NSDD. It is supervised by the Conference of National Armaments Directors' Ammunition Safety Group (AC/326), Sub-Group B on Ammunition Systems Design and Assessment.
Nothing here names a certification body, a notified body or an accredited scheme, and none should be read into it. What the document describes is nations testing and reporting on ammunition through their own national processes. Any resulting safety determination attaches to the munition itself, not to a company holding a certificate.
STANAG 4761 is operational rather than a management-system standard. The substance of what it points at - planning an S3 test programme, running the tests, collecting evidence across the ammunition's life, and reporting ratification and implementation through NATO's own channels - happens on a test range and inside a national armaments authority, not in software. ComplyTrain does not run munitions testing and does not replace AAS3P-20's technical content.
What ComplyTrain gives a defence supplier or programme office is somewhere to hold the process around that work: a controlled procedure for planning an S3 test programme that references AAS3P-20 by clause, training records showing who has been briefed on the current edition before a programme starts, and the document control and audit trail an armaments directorate or a customer will eventually ask to see.
The tier that applies here, and which standards sit alongside STANAG 4761 for a given programme, is set by the contract and the customer's quality clause, not by us. Browse the standards explorer to see what else is in force around it, or talk to us about how you currently evidence S3 assessment work.
Tell us how you need to work with STANAG 4761 and what you need from it. We will come back to you about what ComplyTrain can do.
Thank you. Your list is on its way to your inbox, and we will come back to you on what working with these standards in ComplyTrain involves, usually within one business day.
A STANAG binds the nations that ratify it, not companies directly. It becomes relevant to a supplier once a national contract, tender or ammunition acceptance programme requires assessment against AAS3P-20; outside that, it has no direct force on a business.
AAS3P-20 is the Allied publication STANAG 4761 brings into force. It sets out the safety and suitability for service (S3) assessment testing this agreement covers; STANAG 4761 itself is the ratification and implementation mechanism, not the technical content.
Edition 2, promulgated 27 May 2025, supersedes STANAG 4761 Edition 1 of 27 February 2017. The document names the supersession but does not describe what changed in the underlying testing guidance.
No. The agreement describes nations testing and reporting on ammunition through their own processes to demonstrate it is safe for use. No certification body or scheme is named, and any resulting determination applies to the munition, not to an organisation.
STANAG 4629 covers AAS3P-01, the related standard for safety and suitability for service assessment testing of non-nuclear munitions generally, and this document draws its own definition of "safe for use" from it. STANAG 4761 narrows the same kind of assessment to large calibre ammunition greater than 40 mm.
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