ISO Standards
News on Standards
The additional annotation elements required for specifying geometrical tolerances entirely on 3D CAD models will be appearing shortly in an amendment to ISO 1101.
If you have been looking at ISO 2692 on the Maximum Material Principle, and you think you have spotted an error, you are probably right. This standard has numerous errors in the text and diagrams - use it with caution.
A major update to ISO 5459, the datums standard, is in the pipeline, and should come out this year.
This defines the rules for working with datums, extends the use of datum targets (introducing 'equalising' datum targets), and allows complex surfaces to be used as datum features.
New versions of ISO ISO 10135 and ISO 8062 for moulded, cast or forged components have recently been released, we will try to put an overview on the web site when we have had a chance to look at them.
ISO Standards for Technical Product Specification
BS 308-1:1993, BS 308-2: 1985, and BS308-3:1990 were withdrawn in 2000, and replaced with BS 8888 as the British Standard covering engineering drawing and technical product documentation.
This marks the end of an independent British Standard to cover engineering drawing and documentation, and the adoption in full of ISO standards which are used throughout Europe. As such, BS 8888 does not itself document the principles, practices and procedures to be used in engineering documentation, but instead provides references to the relevant ISO standards that now apply.
Since BS 308 was superceded by BS 8888, and the ISO standards for technical drawing were adopted in full, the number of standards covering technical drawing has expanded to around 200 ISO and EN ISO implementations.
The main standards concerned with geometrical tolerancing are the following:-
BS 308-1:1993, BS 308-2: 1985, and BS308-3:1990 were withdrawn in 2000, and replaced with BS 8888 as the British Standard covering engineering drawing and technical product documentation.
This marks the end of an independent British Standard to cover engineering drawing and documentation, and the adoption in full of ISO standards which are used throughout Europe. As such, BS 8888 does not itself document the principles, practices and procedures to be used in engineering documentation, but instead provides references to the relevant ISO standards that now apply.
Since BS 308 was superceded by BS 8888, and the ISO standards for technical drawing were adopted in full, the number of standards covering technical drawing has expanded to around 200 ISO and EN ISO implementations.
The main standards concerned with geometrical tolerancing are the following:-
| BS ISO 1101:2004 | Technical Drawings – Geometrical Tolerancing – Tolerance of form, orientation, location and run-out – Generalities, definitions, symbols, indications on drawings. |
| BS
EN ISO 1660: 1996 (BS 308: Section 2.3: 1996) |
Technical Drawings – Dimensioning and tolerancing of profiles. |
| BS ISO 2692:2006 | Technical drawings – Geometrical tolerancing – Maximum material principle |
| BS EN ISO 5458:1999 | Geometrical Product Specification (GPS) – Geometrical tolerancing – Positional tolerancing. |
| BS ISO 5459:1981 | Technical drawings – Geometrical tolerancing – Datums and datum-systems for geometrical tolerances. |
| ISO 8015 | The Principle of Independency and the Envelope Requirement. |
| BS ISO 10578:1992 | Technical drawings – Tolerancing of orientation and location – Projected tolerance zone. |
| BS
EN 22768-2:1993* ISO 2768-2:1989* |
General
tolerances Part 2. Geometrical tolerances for features without individual tolerance indications.* *we strongly recommend avoiding the use of this standard |