BS 5237:1985
Current
The latest, up-to-date edition.
Specification for lifting twistlocks
Hardcopy , PDF
English
31-10-1985
Foreword
Committees responsible
Specification
1 Scope
2 Types of lifting twistlocks
3 Form and dimensions
4 Material
5 Rating
6 Thread on lifting twistlock shaft
7 Testing
8 Marking
Appendices
A Method of establishing limits on positioning of
centres of lifting twistlocks used for lifting,
location and restraint
B Notes on design, selection and use of lifting
twistlocks
Tables
1 Minimum lateral and longitudinal float requirements
for a range of twistlock dimensions
2 Centre-to-centre dimensions and tolerances between
lifting twistlocks: fixed centres
3 Rating of lifting twistlocks
4 Dimensions between centres of apertures in container
corner fittings (upper face of top fittings or lower
face of bottom fittings) and relevant tolerances
5 Values of parallelogramming (X) for different
container sizes
6 Example of application of method of calculation of
tolerances on centre-to-centre dimensions for
twistlocks with fixed centres
Figures
1 Dimensions of twistlock
2 Suitable dimensions for corner locating spigots for
use in conjunction with lifting twistlocks
3 Notations for dimensions between lifting twistlocks:
fixed centres
4 Manner of loading for proof loading
5 Plan view of corner fitting
6 Plan view of an arrangement of twistlocks
7 Relationship between allowable difference between
diagonals (K) and parallelogramming (X) of container
8 Relative positions of corner fittings and twistlock
spigots
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