Does anyone know if these are made for retail sale, and, if so, where to find them?

Can’t seem to locate any source.

Thanks.

Mike, Home Depot surprised me the other day with some small hard to find hex socket head metric screws. Might be able to match them up there if there's one nearby.
CB

quote:

Originally posted by Michael Robinson:
Does anyone know if these are made for retail sale, and, if so, where to find them?

Can’t seem to locate any source.

Thanks.

Thanks, CB. I will definitely check that out. No retail gun parts source has these.

I know Mike. I checked everywhere and only one Japanese owned/USA company responded and said they thing I need XXX size fine thread. But, they don't have them. Went to Lowe's first. Nada. Then Home Depot. They were the only one that even mentioned the thread size which the Japanese company got wrong. Standard, not fine.
Near the drawers, you'll see a thread/size checker to get the exact size. Good luck. Hope you get lucky.
CB

I would try Grainger, McMaster-Carr, MSC, or Fastenal. They carry a large variety of fasteners.

do you know the pitch? i don't recall, atm

I made up a couple sets for use in action inletting.

Use the hex head blanks available from Brownells, them get M6 x .75 die and wind them in to form the threads...Head needs to be trimmed to the right size and threaded portion trimmed to .234 dia

Many thanks, Duane.

I was about to answer Jeff that they're M6 screws with a 0.75 pitch, when I opened the thread and saw your post.

Great idea. I'll need to shorten the rear screw to 41.6 mm shank length and the front screw to 24.8 mm.

I'll also need to turn down the head to 10 mm diameter. Looks like the height of the head will be fine.

And, as you say, I'll need to turn down the portion of the shank at the end to 0.234 inch diameter. I'll use a die to thread it. About 10.5 mm of the end of the shank needs threading.

Posting all of this in case anyone else wants to do it.

Brownells sells these screws in packs of 20 for $7.99 plus $4.95 for shipping, so I'll have plenty for my various CZs.

Worked out great.

Even on my Unimat mini-lathe.

Took a while, but I now have them installed on three big bore CZ 550 Magnum rifles.

Only had to scrap one owing to operator error.

I discovered also that one of my firing pin springs was retained by the less than optimal “C–clip.”

I fixed that by retrofitting a new firing pin, spring and lock nut assembly, which I believe replaced the C-clip in later iterations of the CZ 550 Magnum actions.