In this schematic the "Bolt(8x25)" is used most often.
The Front Wheel (gs750ec assembly is constructed from several parts from which the 54111-47604-12u is the most expensive.
Parts such as the Front Wheel (gs750ec: Bolt(8x25), Dust Seal,speedometer Gear Box, Balancer,wheel, 54111-47604-12u are included in the Gs750ec 1977 (b) Usa (e03) Front Wheel (gs750ec parts fiche.