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5-40 nuts for using a prop-stud Empty 5-40 nuts for using a prop-stud

Post  roddie Wed Sep 18, 2013 1:54 pm

Hey all, Thought I'd throw this out there for anyone wanting to try them.

Running a 5-40 prop screw or "stud" all the way into the crank, is said to strengthen the front crank-housing in the event of a hard impact.

Some of us use long screws and cut them to size... so why not make a "stud" and secure your prop with a nut and washer? or a heavier "brass" nut/washer (tail heavy?)... or a "lock-nut" (no explanation needed...)

McMaster-Carr Co. carries 5-40 size hardware, for a variety of our uses.





They also stock 5-40 hex head cap screws, as well as traditional slotted screws, in the lengths we typically need. (check out their selection of 2-56 screws too)
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