Will a Setscrew work??
Will a Setscrew work??
(OP)
I am bolting a 1/4" thick bracket to a 1/16" thick chassis wall. The fastener will go thru a clearance hole in the chassis and there will be a nut on the inside of the chassis. I do not have room for any type of head on the fastener, so I was planning on using a set screw. The set screw would first be threaded into the 1/4 bracket. I would then stick the set screw thru the clearance hole in the chassis. I would then hold the end of the set screw with an allen wrench while I thighten a nut on the other side of the set screw, inside the chassis. Would this work?? Wouldn't the bearing of the threads of the setscrew against the internal threads of the bracket be sufficient to create a strong joint?? I could also use some permanent threadlocker perhaps on the threads inside the bracket. Would a setscrew work in this application??





RE: Will a Setscrew work??
Or a PEM stud.
Or simply a screw from the inside, short enough to not come through.
RE: Will a Setscrew work??
RE: Will a Setscrew work??
The larger pitch radius of the helicoil gives you more shear area in the aluminum. We don't know whether it would be necessary for your assembly, but you should be able to figure it out.
Mike Halloran
Pembroke Pines, FL, USA
RE: Will a Setscrew work??
No, I don't.
RE: Will a Setscrew work??
You could probably do a simple stress analysis to see if the .05 is likely to fail. What kind of load is your bracket under?
Is there any way you can re-design to use more smaller fasteners? This might give you more wall thickness although you still may not be able to go small enough to use flat heads.
We use SS fasteners into aluminium threads at my place quite a lot without too much trouble but the environment is typically pretty benign so corrosion isn't too much of a concern and most items aren't heavily loaded. At previous employers this would have been a no no.
KENAT, probably the least qualified checker you'll ever meet...
RE: Will a Setscrew work??
Mike Halloran
Pembroke Pines, FL, USA
RE: Will a Setscrew work??