This International Standard specifies the dimensions of turned and threaded cylindrical graphite arc furnace electrodes and graphite electrode pins for use as full graphite electrode columns on arc furnaces. This standard covers • the dimensions and tolerances on length and diameter of electrodes; • the dimensions, tolerances and thread details for electrode sockets and pins of tapered shape, used with the electrodes. The standardization of the above dimensional features is essential for the interchangeability of electrodes from different sources, and is a minimum standard. NOTE 1 The standardization ensures that any supplier’s electrode at ambient temperature can accept any other supplier’s pin of appropriate dimensions. However, the variety of raw materials and production techniques may lead to different thermal behaviour of finished products. It is, therefore recommended that electrodes and pins from different sources should not be mixed in use. Annex A contains information on male-female electrodes used in some countries. Annex B contains recommendations for electrode handling and jointing procedures. The metric system is adopted as the standard of measurement. NOTE 2 The use of decimals has been deliberately limited to two digits after the decimal point.