#4 Size Brass Rod

[Mark Landgraf]

I have a project that requires some control rods wit 4-36 threads cut onto them. A bunch of years ago, i remember a vendor selling a variety pack of about a dozen 12 inch long sticks of numbered bar brass rod. Can anyone point me to a source of #4 sized rod?

Mark Landgraf
Albany NY

[Dick_Morris]

Steam Fitter sold machine screw size rod, maybe 30 years ago. I got one of each size during their "we aren't going out of business sale." They were sourced from J.I. Morris. Sizes were 00, 0, 1, and 2.

[Greg_Lewis]

Well, the major diameter of #4 is .112. McMaster has brass rod in .114. Probably close enough.

https://www.mcmaster.com/metals/copper- ... ter~0-114/

[Sandiapaul]

I got a pack from Micro Mark of various sizes for making threaded rod in the smaller sizes.

[Greg_Lewis]

Also, if you go to Ebay and search for brass rod .114 you'll get a bunch of it.

[RET]

Hi Mark,

Is there any particular reason for using #4-36 thread? #4-40 is the standard thread pitch for National Coarse and it would be easier to get taps & dies for a standard size. National Fine is #4-48.

You can also use 1/8" rod and just turn the part to be threaded down a little bit.

Richard Trounce.

[milwiron]

Online knife making suppliers sell 7/64 - .109 diameter brass rod. It's .003 under, plenty close enough! usaknifemaker.com is one source.
Denny

[hoppercar]

Mcmaster carr has it in 4-40....which is standard coarse thread......is there any reason to be using 4-36 ?????