GSX1300BK B King TITANIUM M6 x 20mm pan head bolt. GSX-R400
TITANIUM M6 x 20mm pan head bolt (1.00mm thread)
Suzuki part number: 09139-05025
These TITANIUM pan head bolts are manufactured from titanium 6AL/4V (Grade 5) and are stronger, lighter and corrosion proof unlike your originals which are probably corroded right now.
Weight is around about half the weight of the original steel item.