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BS 4429:1987

BS 4429:1987

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The latest, up-to-date edition.

Specification for rigging screws and turnbuckles for general engineering, lifting purposes and pipe hanger applications

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-30-1987

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
Section one. General requirements
1.1 Scope
1.2 Definitions
1.3 Lifting applications
1.4 Size
1.5 Tolerance on dimensions
1.6 Heat treatment
1.7 Hot dip galvanizing
1.8 Screw threads
1.9 Freedom from defects
1.10 Proof loading
1.11 Marking
1.12 Test certificate
Section two. Specific requirements for rigging screws
2.1 General
2.2 Tubular body
2.3 Workmanship
2.4 Attachments
2.5 Types of rigging screw
2.6 Open and closed dimensions
2.7 Safe working loads
Section three. Specific requirements for turnbuckles
3.1 General
3.2 Designation
3.3 Open body
3.4 Workmanship
3.5 Attachments
3.6 Types of turnbuckle
3.7 Open and closed dimensions
3.8 Safe working loads
Section four. Specific requirements for attachments
4.1 General
4.2 Screwed elongated eyes
4.3 Screwed forks
4.4 Screwed trapezoidal hooks
4.5 Lock-nuts
Appendices
A Information to be supplied by the purchaser with
      the enquiry and order
B Notes on design
C Selection, application and use of rigging screws
      and turnbuckles for lifting applications
Tables
1 Recommended maximum sizes of marking stamps
2 Tubular bodies for rigging screws
3 Open and closed dimensions (H) and safe working
      loads for rigging screws
4 Hexagon-ended open bodies for turnbuckles
5 Open and closed dimensions (H) and safe working
      loads for turnbuckles
6 Screwed elongated eyes
7 Screwed forks (supplied complete with bolt and
      nut)
8 Screwed trapezoidal hooks for turnbuckles
9 Types of defect found in in-service inspections
      and actions to be taken in the event of a defect
Figures
1 Tubular body for rigging screws
2 Types of rigging screw
3 Hexagon-ended open body for turnbuckles
4 Types of turnbuckle
5 Screwed elongated eye
6 Screwed fork
7 Screwed trapezoidal hook for turnbuckles

Materials, components, dimensions, finishes and tests for rigging screws (8-100 mm thread size) and turnbuckles (8-72 mm thread size).

This British Standard specifies materials, components, dimensions, finishes and tests for rigging screws and turnbuckles of the following types and nominal sizes for both lifting and non-lifting applications.

Rigging screws : 8 mm to 100 mm, size of screw thread

Turnbuckles, : 8 mm to 72 mm, size of screw thread

series no. 1,

series no. 2 and

pipe hanger

applications

Lock-nuts are also covered (see section four).

Attachments for turnbuckles for use in pipe hanger applications are excluded from this British Standard (see BS 3974 : Part 1 ).

NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
MHE/1
DevelopmentNote
Supersedes 85/72302 DC and BS 4429(1969) (08/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 3692:1967 Specification for ISO metric precision hexagon bolts, screws and nuts. Metric units
BS 6323-3:1982 Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes Specific requirements for hot finished seamless steel tubes
BS 4114:1967 Specification for dimensional and quantity tolerances for steel drop and press forgings and for upset forgings made on horizontal forging machines
BS 3974-1:1974 Specification for pipe supports Pipe hangers, slider and roller type supports
BS 6323-2:1982 Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes Specific requirements for hot finished welded steel tubes
BS 1610-2:1985 Materials testing machines and force verification equipment Specification for the grading of equipment used for the verification of the forces applied by materials testing machines
BS 6323-1:1982 Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes General requirements

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