BS 2903:1980
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Specification for higher tensile steel hooks for chains, slings, blocks and general engineering purposes
Hardcopy , PDF
06-15-2001
English
08-29-1980
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Foreword
Cooperating organizations
Specification
1 Scope
2 Rating
3 Types of hook
4 Special hooks
5 Material
6 Hardness test
7 Destruction test
8 Form and dimensions
9 Tolerances on forged dimensions
10 Diameter and length of shank (types 1, 2 and 5)
11 Screw threads and undercut
12 Workmanship
13 Heat treatment
14 Quality marking
15 Proof loading
16 Testing facilities
17 Additional tests
18 Inspection
19 Identification marking
20 Manufacturer's certificate
Appendices
A Notes on design
B Information to be supplied with the enquiry or order
C Particulars of screw threads
D Selection of ball or roller thrust bearings
E Optional lugs for attachment of safety catches on
point hooks
F Optional 'flats' for attachment of safety catches on
'C' hooks
G Safe working loads of chain assemblies (Grade M
chains)
Tables
1 Point hook with shank
2 Point hook with shank (having increased internal
diameter for small loads)
3 Point hook with eye (for use with chain)
4 Point hook with eye (for use with wire rope
thimbles)
5 'C' hook with shank
6 'C' hookwith eye (for use with chain)
6A Link combined with 'C' hook, table 6 (for use with
wire rope thimbles)
7 Values of K
8 Approximate mass of drop forged trapezoidal section
hooks
Figures
1 Dimensions of undercut
2 Point hook, showing points 'a' and 'b' and
recommended positions for marking
3 'C' hook, showing points 'a' and 'b' and recommended
positions for marking
4 Optional lugs (point hooks)
5 Optional 'flats' ('C' hooks)
Trapezoidal section forged hooks. Safe working loads (SWL) in R 10 series, with provision for specials complying with design principles, point hooks with shanks or with eyes; C-hooks with shanks or with eyes. Optional lugs for safety catches.
| Committee |
MHE/1
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 4942-2:1981 | Short link chain for lifting purposes Specification for grade M (4) non-calibrated chain |
| ISO 2141:1972 | Lifting hooks General characteristics |
| ISO 2766:1973 | Single lifting hooks with shank — Capacity up to 25 tonnes — Grades M, P, S (T, V) — Hammer and drop forged hooks |
| BS 4942-1:1981 | Short link chain for lifting purposes Specification for general conditions of acceptance |
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