A sample from the products for the Pulse Generator / Advancer 85 (gl1200l) include: Cover.inj,pulse, Bolt,flange,sh,, Bolt,hex.,6x18, Gskt.sealed.cover (mca).
The Washer,screw 4x12 is the lowest priced item on this Pulse Generator / Advancer 85 (gl1200l) schematic.
With four applications this Sh.bolt,6x20 is the most specified part.