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BSI BS 4235-1:1972

Specification for metric keys and keyways -- Parallel and taper keys
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BSI BS 4235-1:1972

Specification for metric keys and keyways -- Parallel and taper keys

PUBLISH DATE 1972
BSI BS 4235-1:1972

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).

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.
SDO BSI: British Standards Institution
Document Number 4235-1
Publication Date Feb. 22, 1972
Language en - English
Page Count
Revision Level
Supercedes
Committee MCE/5
Publish Date Document Id Type View
Feb. 22, 1972 BS 4235-1:1972 Revision
Dec. 28, 1967 BS 4235-1:1967 Revision