First published in part as part of AS E8-1925.
AS H5 first published 1936.
AS H6 first published 1936.
AS H7 first published 1936.
AS B21 first published 1939.
AS B21-1939 and AS E8-1925 revised, amalgamated and redesignated AS H60-1952.
AS H17 first published 1953 (being endorsement of BS 899-1952 with amendments).
Second edition AS H5-1968 (being endorsement of BS 265-1963 without amendment).
Second edition AS H6-1968 (being endorsement of BS 266-1963 without amendment).
Second edition AS H7-1968 (being endorsement of BS 267-1963 without amendment).
AS H68 first published 1968 (being endorsement of BS 711-1963 without amendment).
AS H69 first published 1968 (being endorsement of BS 712-1963 without amendment).
AS H70 first published 1968 (being endorsement of BS 713-1963 without amendment).
AS H74 first published 1968 (being endorsement of BS 374-1963 without amendment).
AS H75 first published 1968 (being endorsement of BS 407-1963 without amendment).
AS H76 first published 1968 (being endorsement of BS 409-1964 without amendment).
AS H77 first published 1968 (being endorsement of BS 790-1963 without amendment).
AS H83 first published 1968 (being endorsement of BS 1824-1963 without amendment).
AS H5-1968, AS H6-1968, AS H7-1968, AS H17-1953, AS H60-1952, AS H68-1968, AS H69-1968, AS H70-1968, AS H74-1968, AS H75-1968, AS H76-1968, AS H77-1968 and AS H83-1968 revised, amalgamated and redesignated AS 1566-1974.
Second edition 1985.
Third edition 1997.
Reconfirmed 2018. Originated in part as part of AS E8-1925. Previous edition AS 1566-1985. Third edition 1997.