With critical bolts (like engine connecting rods) there should be no guesswork—refer to a detailed shop manual. But for other fasteners (handlebars, axle nuts, switches) here are some general guidelines. Note that these are for the bolt-shaft diameter, not the measurement across the flats on the bolt head.
With critical bolts (like engine connecting rods) there should be no guesswork—refer to a detailed shop manual. But for other fasteners (handlebars, axle nuts, switches) here are some general guidelines. Note that these are for the bolt-shaft diameter, not the measurement across the flats on the bolt head.