BS 3032:1958

Co-operating organizations
Foreword
Descriptive notes
Tables
A Purposes for which the shackles are intended
B Proportions of shackles in terms of sqrt W, square
    root of safe working load in tons
C Proportions of shackles in terms of (d) body
    diameter
D Safe working loads (W) in tons, of the shackles in
    terms of (d) body diameter and (D) pin diameter
E Approximate weights of shackles
Specification
Clause
1 Types of shackles
2 Material
3 Harness test
4 Nominal size
5 Form and dimensions
6 Tolerance on dimensions
7 Workmanship
8 Heat treatment
9 Bolts and nuts
10 Screw threads
11 Quality marking
12 Manufacturer's records of material
13 Proof testing
14 Testing facilities
15 Additional tests
16 Inspection
17 Marking
18 Certificate of test and examination
Diagrams
1 Recommended position for marking dee shackles
2 Recommended position for marking bow shackles
3 Correction factor for pin diameters of shackles less
    than 1 inch nominal size
Figures. Shackles
1 Small dee shackle
2 Large dee shackle
3 Large bow shackle
4 Small bow shackle
5 Grab shackle
Figures. Pins
6 Type A. Screwed pin with eye and collar
7 Type B. Screwed pin with eye and collar
8 Type C. Countersunk screwed pin with slotted head
9 Type D. Countersunk screwed pin with sunk square
            socket
10 Type E. Bolt with hexagon head, hexagon nut and
            split cotter pin
11 Type F. Plain cylindrical pin with circular head
            and forelock
Tables of dimensions
1 Small dee shackles
2 Large dee shackles
3 Large bow shackles
4 Small bow shackles
5 Grab shackles
Appendices
A Certificate of test and examination
B Notes on design
C Locking of pins
D Information which should be supplied with enquiry
    and order

Dee and bow shackles each in small and large sizes, with six alternative types of pin; grab shackles with special screw pins for use with Bordeaux connections. Safe working loads; dee and bow shackles ¼ ton to 80 tons, grab shackles 1 ton to 12 tons. Form, dimensions, material, workmanship, heat treatment, threads, proof testing, inspection, marking, certification. Purposes of different types with proportions and weights. References to specifications for associated lifting tackle components. Design principles.