Spring washers
Page 74
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Following the publication of metric specifications for plain washers (BS 4320) and crinkle washers (BS 4463), the British Standards Institution has published BS 4464—Specification for spring washers for general engineering and automobile purposes—metric series.
A rationalized selection of ISO metric nominal sizes has been included in this specification, for use where appropriate with products manufactured to the metric threaded fastener standards.
Account has also been taken of the current British Standard specifications {BS 1802 'Steel spring washers for general engineering and automobile purposes' and BS 2061 'Phosphor bronze spring washers for general engineering purposes'), which deal with inch series products, and it was decided in this case to prepare a single specification covering mainly the dimensional and functional aspects of metric series spring washers, rather than a series of separate specifications differing only with regard to material requirements.
Spring washers are nowadays manufactured in a variety of materials and although recommendations with regard to the more commonly used spring steels and copper alloys have been included in this standard, it is stated that the specification of the material requirements shall be the subject of agreement between the manufacturer and the purchaser.
Available from: BSI Sales Branch, 101 /113 Pentonville Road, London, NI. Price 8s each (10s including postage to non-subscribers).