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@tynan
The crank bolts (for that is what they are called) comes with the bottom bracket.
Like lpg says Sugino 75's square hole is shaped to fit on an ISO tapered spindle not a JIS spindle - although you can get away with putting them on a JIS the chainline will be less than ideal.
The only ISO BBs I can think of right now are Sugino 75 BBs and Hatta R9400 (expensive).