Just ordered all new bolts for my two front 750 K1 calipers and dual disc front hub @ Bolt Depot $13 + $11 shipping.
Nice to get all from one place.
here's the parts list for others (for 2 calipers) hopefully it will be of use to someone sourcing hardware
quantity, BoltDepot's part #'s, specs, use....
6, #10687 - Metric flange nuts serrated, Zinc plated class 8.8 steel, 8mm x 1.25mm Front Hub Rotor mount flange nuts
10, #4527 - Metric flat washers, Zinc plated steel, 6mm (calpier arm shim/b-pad adjuster washers )
4, #4529 - Metric flat washers, Zinc plated steel, 8mm (calpier arm shim washers)
2, #6223 - Metric hex bolts, Zinc plated class 8.8 steel, 8mm x 1.25mm x 35mm lower caliper arm mount bolt
6, #6235 - Metric hex bolts, Zinc plated class 8.8 steel, 8mm x 1.25mm x 110mm Front Hub Rotor mount bolts
4, #6064 - Metric tap bolts, Zinc plated class 8.8 steel, 6mm x 1.0mm x 30mm upper caliper arm mount bolt
2, #5143 - Metric machine screws, Phillips flat head, Stainless steel 18-8, 6mm x 1.0mm x 50mm B pad adjuster bolt
2, #13572 - Metric hex jam nuts, Stainless steel 18-8, 6mm x 1.0mm B-pad adjuster nut
4, #15754 - Metric socket cap, Class 12.9 steel black oil finish, 10mm x 1.25mm x 50mm CB750 K1, Caliper Hex bolt - i'll cut these down to 45mm