UNIFIED SCREW THREAD ADOPTED DPI UBLICATION by the British 1
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Standards institution of Standards B.S. 1,768 and B.S. 1,769, marks a most important development in the work of standardization between Canada, the United States and this country. In 1949, B.S. 1,580 was published. This covered the basic dimensions for a unified screw thread for hexagon bolts, screws, nuts and plain washers.
. With the publication of these two new D2
standards, it will now be possible to give effect to the agreement to adopt the unified screw thread. As a result there will be a greater degree of interchangeability in respect of the engineering products of the countries mentioned.
Copies of the new standards can be obtained from the Institution at 24, Victoria Street, London, S.W.1, at price as. (B.S. 1.768) and 2s. 6d. (B.S. 1,769).