Def Stan

Defence Standards — what they are, and where to get the current issue

How the Def Stan portfolio works, who maintains it, and the retrieval trap that leaves suppliers citing superseded issues.

StanMIS, the system most people still search for, is no longer being updated — its own front page warns that some Defence Standards on it may not be the most up-to-date versions. The Defence Standards Index replaced it for current documents. A supplier who pulled a Def Stan from StanMIS and filed it may be working to a superseded issue and have no signal that anything changed.

Why this reaches the test bench

A test programme written against the wrong issue of a Def Stan produces evidence an assessor will not accept. Getting the issue number right is not pedantry, and it is the reason this site prints issue numbers and retrieval dates against every designation it names.

What gets tested

Def Stans are maintained by Defence Standardization (DStan), within the Engineering Group under the Director Engineering and Safety
MOD standardization policy is set out in Joint Service Publication 920
Access is GATED: dstan.mod.uk returns a redirect to Defence Gateway single sign-on. There is a registration route for industry, and an RLI version for MOD and cleared industry users
DStan also provides access to NATO STANAGs and Allied Publications, which are gated separately again

Also current

Two access routes exist and they are not equivalent: an RLI version for MOD and industry users with Restricted LAN Interconnect access, and the extranet for everybody else. StanMIS remains the route for archived standards and for requesting NATO documents, but not for confirming what is current.

A document you can actually read

The DStan guidance page on GOV.UK is public and citable. The standards themselves are NOT openly downloadable — dstan.mod.uk redirects to Defence Gateway SSO. GOV.UK describes Def Stan 00-970 specifically as 'unrestricted and available in full via the Defence Standards website'; that wording is applied to 00-970 and NOT to 61-005 or 59-411, so do not generalise it.

How this differs from the American regime

The American analogue is the MIL-STD series, published through the ASSIST database. Same idea, different portfolio, and no cross-recognition — a product qualified to a MIL-STD has not thereby met a Def Stan.

Careful

Issue numbers matter more than designations, and clause numbers travel badly. Def Stan 59-411 reached Issue 3 on 14 June 2019 and, as its own reviewers noted, many paragraph numbers changed against Issue 2. Def Stan 61-005 Part 6 reached Issue 7 on 28 March 2020 and renumbered its annexes. Anyone citing a clause from an older issue is citing a document that no longer says that. Cite the issue, and cite when you retrieved it.

Sources

UK Defence Standardization — GOV.UK. Retrieved 2026-09-06.Supports: DStan's role and remit; JSP 920; maintenance of the Def Stan portfolio; online access to Def Stans, NATO STANAGs and Allied Standards
StanMIS — UK Defence Standardization — Ministry of Defence (dstan.mod.uk). Retrieved 2026-09-06.Supports: StanMIS is no longer updated and may not hold the most current versions; the Defence Standards Index replaced it; StanMIS retained for archived standards and NATO access requests; RLI versus extranet routes
Defence Standard 00-056 Part 1 Issue 7 — revision note — DStan. Retrieved 2026-09-06.Supports: StanMIS is no longer updated and may not hold current versions; the Defence Standards Index replaced it; renumbering and up-issues can have consequences for contracts referencing earlier issues
Def Stan 59-411 Issue 3 — accredited test scopes and issue lineage — Find a Conformity Assessment Body (GOV.UK). Retrieved 2026-09-06.Supports: UKAS accreditation schedules naming Def Stan 59-411 Part 3 Issue 3:2019 and the Part 3 lineage Issue 1:2007 + A1:2008 -> Issue 2:2014 -> Issue 3:2019