Requirements for the manufacture, inspection and testing of centres in the machined, part machined or ready for assembly condition for tractive and trailing stock.Cross References:BS 308:Part 3BS 1134:Part 1BS 2634:Part 1BS 4490BS 5750:Part 1BS 5750:Part 2BS 5750:Part 3BS 5781BS 5892:Part 6BS 6200BS EN 10002-1ISO 1005-4UIC 812-1