Bolt - engine plate to frame, Norton girder fork singles, brazed cradle frame 1937 - 1946, with correct shaped head, 7/16". The same part number was used for the bolt but the head shape changed when LRH were used. The LRH had a domed head - the girders had a hollow head. The bolt head shape changed in 1947 but the same part number was used. 2 required per machine. Not used on open frame eg Model 18 , 16H, Big 4. Also can be used for BSA M20 oil tank drain plug. Original Norton part number: E4268 - Rear engine plate frame attachment bolt E5375- Rear engine plate frame attachment bolt washer
