BS 4429:1987

This standard BS 4429:1987 Specification for rigging screws and turnbuckles for general engineering, lifting purposes and pipe hanger applications is classified in these ICS categories:

• 53.020.30 Accessories for lifting equipment

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.

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