Not Ranked
We use aircraft bolts and locking nuts from Aircraft Spruce (not the only source but easy for small volume orders) for halfshaft fasteners, etc.. And a fastener without a nut is a screw, so a screw can also be a bolt! Grip length is a major concern when choosing a fastener. A proper grade five fastener can out perform a grade 8 or an AN fastener when used properly.
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