Parts such as the F-1: Sub Cord B, Washer,plain,8mm, Rubber,joint, Resistor Assy. are included in the Mt50s 1986 (g) England F-1 parts fiche.
This F-1 assembly utilises two Bolt,hex 8x25(s) - the highest specified component.
The Mt50s 1986 (g) England F-1 consists of twenty-one pieces with the Light Assy,head being the most expensive.