Parallel screw threads of Whitworth form. Requirements not-eligible Methods of horizontal escape for

Methods of horizontal escape for disabled people

Information on working on machine-room-less lift installations

such as global positioning systems (GPS)

BS EN 1176-3:2008 Playground equipment and surfacing

Acrylic resin cement

Parallel screw threads of Whitworth form. Requirements not-eligible Methods of horizontal escape forThis British Standard specifies limits of sizes, and tolerances, for single start parallel screw threads of Whitworth form, for general engineering use. While Whitworth threads have remained unchanged since the last revision of BS 84 in 1956, the present revision of the Standard has been undertaken on the basis that Whitworth threads will undoubtedly continue to be used for many years, especially on replacements or spare parts. This standard specifies