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BS 978-2:1952Specification for fine pitch gears. Cycloidal type gearsstandard by BSI Group, 01/24/1952
BS 978-3:1952Specification for fine pitch gears. Bevel gearsstandard by BSI Group, 01/24/1952
BS 46-3:1951Keys and keyways and taper pins. Specification for solid and split taper pins for general engineering purposesstandard by BSI Group, 12/20/1951
BS 1802:1951Specification for steel spring washers for general engineering and automobile purposesstandard by BSI Group, 11/26/1951
BS SP 41-46:1951Specifications for tab washers. For aircraftstandard by BSI Group, 11/22/1951
BS SP 41-46:1951+A4:2011Specifications for Tab washers for B.A. and B.S.W. hexagons for aircraftstandard by BSI Group, 11/22/1951
BS SP 41-46:1951+A5:2012Specifications for tab washers for B.A. and B.S.W. hexagons for aircraftstandard by BSI Group, 11/22/1951
BS SP 33-39:1951Specifications for turnbarrels, tension rods and swaged cable-end connections for aircraftstandard by BSI Group, 11/19/1951
BS SP 33-39:1951+A5:2015Specifications for turnbarrels, tension rods and swaged cable-end connections for aircraftstandard by BSI Group, 11/19/1951
BS SP 33-39:1951+A4:2012Specifications for turnbarrels, tension rods and swaged cable-end connections for aircraftstandard by BSI Group, 11/19/1951
BS 1769:1951Specification. Unified black hexagon bolts, screws, nuts (UNC & UNF threads). Heavy seriesstandard by BSI Group, 09/24/1951
BS G 133:1951Specification for electro-magnetic indicators for extra low voltage aircraft systemsstandard by BSI Group, 09/06/1951