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BSI BS 856:1969

Specification for wing nuts
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BSI BS 856:1969

Specification for wing nuts

PUBLISH DATE 1969
PAGES 16
BSI BS 856:1969

1.1 This British Standard specifies requirements for wing nuts having ISO metric, ISO inch (Unified), BSW1), BSF1) and BA1) screw threads.

1.2 Nominal dimensions for two forms of wing nut blank geometry are specified in the following size ranges:

Wing nut Diameter range
Blank geometry shown in Type designation Product description ISO metric UNC UNF BSWaBSFa BAa
Table 1 HS Hot stamped M3 to M18 No. 3 to Âľ in (â…› in to Âľ in 5 BA to 0 BA
DC Cast
Table 2 CF Cold forged M3 to M20

a BSW, BSF and BA screw threads have been rendered obsolescent. See Appendix A.

ISO metric, ISO inch (Unified), BSW, BSF and BA screw threads diameters 3 mm (â…› in) to 20 mm (Âľ in). Two forms of wing nut blank geometry; tables of dimensions for hot stamped and cast varieties and for cold forged products.
SDO BSI: British Standards Institution
Document Number 856
Publication Date May 19, 1969
Language en - English
Page Count 16
Revision Level
Supercedes
Committee FME/9
Publish Date Document Id Type View
May 19, 1969 BS 856:1969 Revision
Feb. 8, 1960 BS 856:1939 Revision