Parts such as the Upper Casing: Bolt (695), Pin, Dowel (614), Ybs67-8 Washer, Spring, Cap are included in the 70eth 1987 Upper Casing parts fiche.
This UPPER CASING assembly utilises seven Bolt (695)(s) - the highest specified component.
The 70eth 1987 Upper Casing consists of twenty pieces with the Casing, Upper being the most expensive.