AS 1275-1985 (R2017)

Metric screw threads for fasteners (FOREIGN STANDARD)

Specifies requirements for single start parallel coarse pitch series metric screw threads, mainly intended for threaded fasteners. It covers screw threads from 1.6 mm diameter up to and including 64 mm diameter, in tolerance classes 6e, 6f, 6g and 8g, for external threads; and 6H and 6G for internal threads. Information is given on symbols for screw thread parameters, tolerances, deviations, thread classes, designation and verification. Appendices, giving notes on the production of screw threads and a comparison of symbols used in this Standard and the 1972 edition, are included. It should be particularly noted that in this edition, the thread roots of external threads (root curvature and associated limits and tolerances), are specified in a manner that is fundamentally different from the 1972 edition.  RECONFIRMATION NOTICE Technical Committee ME-029 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 16 June 2017. The following are represented on Technical Committee ME-029: Association of Accredited Certification Bodies Association of Wall and Ceiling Industries of Australia Australian Chamber of Commerce and Industry Australian Engineered Fasteners and Anchors Council Australian Industry Group Australian Steel Institute AUSTROADS Bureau of Steel Manufacturers of Australia Galvanizers Association of Australia Materials Australia National Association of Steel-Framed Housing National Association of Testing Authorities Australia New Zealand Heavy Engineering Research Association Society of Automotive Engineers- Australasia Steel Construction New Zealand Swinburne University of Technology