Thread in a Polymer
Thread in a Polymer
(OP)
Hi,
I have an application where I would like to put an M12 thread into a polymer.
What I would like to know, what polymers hold a thread well? It will not be heavily loaded at, just half twist past finger tight when bolt is inserted
Have been told acetal could be a good option. Am wanting something relatively cheap.
Dave
I have an application where I would like to put an M12 thread into a polymer.
What I would like to know, what polymers hold a thread well? It will not be heavily loaded at, just half twist past finger tight when bolt is inserted
Have been told acetal could be a good option. Am wanting something relatively cheap.
Dave





RE: Thread in a Polymer
Reinforced polymers may be better if you are molding the threads. Neat polymers probably better if cutting the threads.
Do you have room for an insert? Helical wire inserts don't take up much room and would me much stronger and more durable.
Mike
RE: Thread in a Polymer
Yeah the thread is to be cut into.
Excuse my ignorance "neat" polymers? I take it these are homogeneous without reinforcement.
Dave
RE: Thread in a Polymer
I used the term "neat" in reference to no reinforcement fibers. I think it also means no other fillers (glass beads, PTFE, etc.)
Do you need to use standard 60 degreee threads? If not then there are other thread profiles the can be stronger in polymers. Basically they have smaller included angles such as 40 degrees instead of 60. This effectively weakens the metallic screw and strengthens the polymer hole.
Mike
RE: Thread in a Polymer
RE: Thread in a Polymer
Dave
RE: Thread in a Polymer
RE: Thread in a Polymer