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More Changes to ISO 898-1!
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2013-05-20
The International Standards Organization has published a new version of ISO 898-1, the fundamental mechanical property standard for carbon and alloy steel bolts, well before the normal five-year review schedule. Fastener consultant, Dr. John Newnham considers the reasons for this early revision and its implications for the fastener industry.
The fundamental mechanical property standard for carbon and alloy steel bolts, which identifies the strength grades, permissible material types, and required tests and methods, is ISO 898-1. This standard is not only used to define the properties of ISO standard bolts, screws and studs, but is called up in numerous proprietary drawings for non-standard fasteners. ISO published the new 2013 version of this standard in January, well before the normal ISO five-year review schedule. The 2009 issue of the same standard was quite controversial, and several aspects drew comments from various national standards bodies. As a result, ISO Technical Committee 2 sub-committee 11 drafted two amendments to the document to take account of the technical and editorial problems. However, the changes were so extensive that rather than issue the amendments separately, ISO 898-1 was re-published with all of the amendments included. The ‘Foreword’ to the standard states that this is a minor revision, but there are some technical changes that could cause some products manufactured before the changes to be out of specification now. There are numerous editorial revisions for clarification, and the usual updates where necessary, relating to reference standards. The newly agreed ISO practice of not dating the reference standards is continued, to ensure that the latest issue of any quoted standard applies immediately.
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news provided by Fastener + Fixing Magazine (www.fastenerandfixing.com) arranged by Fastener World Inc.
2013-05-20

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