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Modified Spring Plunger

Modified Spring Plunger

Modified Spring Plunger

(OP)
I am looking for a spring plunger I can use to indicate a part is fully seated inro a hand tool.  Therefore the plunger nose will have to go through the body and extend out the other side when the spring is fully compressed.
I am looking for a 10-32 thread plunger, with a spring constant of approx 4lbs/in. I have attached a mock-up.

RE: Modified Spring Plunger

Have you tried Vlier?  www.vlier.com

RE: Modified Spring Plunger

(OP)
Yes.  I've looked at Carr Lane, McMaster-Carr (of course!) and Vlier, among others.  All offer varying types of spring plunger, however none have a plunger that extends through the body.

RE: Modified Spring Plunger

MCmaster and Carr-Lane sell Vlier plungers.

I did design my own spring plunger once.  It's not too difficult.  Exercise basic engineering knowledge of springs and forces and you can get there.  I didn't find any shocking surprises when I did so.  I dare say it was even fun.

RE: Modified Spring Plunger

Reid Supply has them as well.

James Spisich
Design Engineer, CSWP

RE: Modified Spring Plunger

Can't think of exact commercial product.  

You could modify a small index plunger. Cut head off.   Dzus make a fairly small one.

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