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BSI
BS 4235-1:1972

BS 4235-1:1972

Current

Current

The latest, up-to-date edition.

Specification for metric keys and keyways Parallel and taper keys

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

22-02-1972

Publisher

British Standards Institution

Co-operating organizations
Foreword
1 Scope
2 Fits
3 Material
4 Dimensions and tolerances

Parallel and taper keys and keyways for shafts of 6 mm to 500 mm diameter. For square and rectangular parallel keys three classes of fit, \'free\', \'normal\' and \'close\', are foreseen.

This British Standard relates to the following types of keys and keyways with dimensions in millimetres:

  1. square parallel,

  2. rectangular parallel,

  3. square taper, gib-head and plain,

  4. rectangular taper, gib-head and plain.

In addition, a fourth class of fit is provided in this British Standard to give an interference fit.

Three classes of fit are provided for the square and rectangular parallel keys and keyways, namely “free”, “normal” and “close”, and the dimensions and tolerances specified are in accordance with ISO Recommendations R 7733) and R 7744).

Committee
MCE/5
DevelopmentNote
Reviewed and confirmed by BSI, December 2012. (11/2012)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO/R 773:1969 Similar to

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