Question about couplers

I’ve read in a few threads that 5012K251 is the coupler for most cylinders: Link to product on McMaster

I would like to know what’s the fitting female coupler for it? Can anyone post a code for McMaster or link me to it? I looked for it myself, but I got lost, there are so many options there.

Reason why I’m asking is because I’ve heard that female couplers sometimes wear off from use and start leaking, so if I’m already ordering male, I might as well order female with it to have a backup.

Thanks.

Anyone? Come on guys, this is important. :)

McMaster-Carr

This will fit into a 1/4” threaded hole in the cylinder. If your cylinder has a larger hole, you’ll need a different female coupler.

Thanks. :) Hmm… Then maybe I should wait to actually see what type of female coupling my cylinder is going to have before shooting in the dark.

I hate to contradict west, but to the best of my knowledge, the PN you want is 5012k29. McMaster-Carr

One thing I have found out looking for connectors on that site is that working with pipe sizes is very tricky business and you have to look at all dimensions very closely to get the proper size.

Thank you too gprent. :)

He’s right, I saw 1/8” and thought it was the coupling size. You do have to look carefully.

Like I said, too much info. :) They have ~0.5 million products. :eek:

For European members who don’t want to pay overseas postage fee : check out this site : RS

The male coupler is : Straight hose barb,1/4in ID x 1/8in flow

Excellent info, thanks for the find. :) I’ll remember this in case I need a new one.