The most reasonably priced component used on the Cb750k0 Four Germany Bolt-washer (lower Crankcase is the Washer,plain, 6mm.
The most expensive part in this assembly is the Washer,10x2.3.
With a quantity of eleven pieces, the Washer, 14m/m is the most used part in the BOLT-WASHER (LOWER CRANKCASE diagram.