What threads are the best for a PCB?

[cyberblak]

pcb screw threads

Hi,

I need something screwed into a PCB and I need the threads to be sturdy enough so that they don't break when someone put too much torque on the screw.

Best solution is one that cost virtually nothing

Any idea, someone?

Thanks,

cyberblak

 

[sigint]

Re: Threads in a PCB

I've seen threaded pcb holes, but they were only meant to retain a captive screw - threads on the end and a smaller diameter round shaft below the head - your cheapest solution assuming you are using FR4 is PEM nuts - available from any hardware distributor - manufactured by PEM Industries, Captive Fasteners, and others - with versions specifically for use in PCB's.

SiGiNT

 

[dfullmer]

Re: Threads in a PCB

i too have used swagged in PEM's. They work well for me even at high currents. make sure the pull force of the screw is pulling the PEM into the board and not the other way round.

Good luck


dfullmer

 

[cyberrat]

Threads in a PCB

Yup, PEM's are the way to go.

I have not come across anything as cheap to use as a PEM.

 

[cyberblak]

Re: Threads in a PCB

Thanks to all...

This is exactly what I was after.

cyberblak