EN ISO 7090:2000

SLOVENSKI STANDARD
01-julij-2002
1DGRPHãþD
SIST ISO 7090:1996
Okrogle posnete podložke - Normalne vrste - Razred izdelave A (ISO 7090:2000)
Plain washers, chamfered - Normal series - Product grade A (ISO 7090:2000)
Flache Scheiben mit Fase - Normale Reihe - Produktklasse A (ISO 7090:2000)
Rondelles plates, chanfreinées - Série normale - Grade A (ISO 7090:2000)
Ta slovenski standard je istoveten z: EN ISO 7090:2000
ICS:
21.060.30 Podložke, varovalni elementi Washers, locking elements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 7090
Second edition
2000-06-01
Plain washers, chamfered — Normal
series — Product grade A
Rondelles plates, chanfreinées — Série normale — Grade A
Reference number
ISO 7090:2000(E)
©
ISO 2000
ISO 7090:2000(E)
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ISO 7090:2000(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 7090 was prepared by Technical Committee ISO/TC 2, Fasteners.
This second edition cancels and replaces the first edition (ISO 7090:1983), which has been technically revised.
INTERNATIONAL STANDARD ISO 7090:2000(E)
Plain washers, chamfered — Normal series — Product grade A
1 Scope
This International Standard specifies the characteristics of normal-series, product-grade-A plain washers
chamfered at the outside diameter, in the 200 HV and 300 HV hardness classes and of nominal sizes (nominal
thread diameters) ranging from 5 mm to 64 mm inclusive.
Washers of hardness class 200 HV are suitable for
� bolts and screws of product grades A and B in property classes up to and including 8.8;
� nuts of product grades A and B in property classes up to and including 8;
� bolts, screws and nuts of stainless steel of similar chemical composition;
� case-hardened thread rolling screws.
Washers of hardness class 300 HV are suitable for
� bolts and screws of product grades A and B in property classes up to and including 10.9;
� nuts of product grades A and B in property classes up to and including 10.
If dimensions other
...