Is there anyone who used a socket/hex type screw for a rascal 40 engine (between engine and mount)? I am gonna try that?

Is there a website where i can learn stuff about types and purpose of different kinds of screws, bolts, nuts , washers etc?
thanks!

If the mount is metal, you will need machine screws. If it's a composite, you will need sheet metal screws. Dubro and Great Planes make both in a socket head configuration. Use #4 for anything up to a .45 and #6 for larger engines. Be sure you drill the proper size pilot hole for the sheet metal screws and the proper clearance hole for the machine screws. With a composite mount, use a little lube (I like white lithium grease for various reasons) on the screw the first time you turn it in.

Dr.1

I use all machine screws in my motor mounts[ composit or otherwise]. I tap the holes[ drilled the appropreate size ] with a machine tap snd screw the bolt right into the mount. If this eventually stripps out I can then put locking nuts on them.

I do the same thing,socket head screws into composite mounts, I have never had one to strip out yet. but I let the socket head tap the threads in the composite mounts after I drill the proper start hole. I use almost all composite motor mounts anymore.

If this eventually stripps out I can then put locking nuts on them.

If it strips out, then it's not done right. Use the sheet metal screws and they won't strip and won't back out, either.

Dr.1

Sorry forgot to mention , it is for a OS46fx engine , inverted in the rascal. The stock aluminum mounts broke after a while and I made steel ones got from home depot...
thanks!

wrong reply...........