What are these, and where can I get them? Help!

They are threaded inside, and are some type of screw cap. Pretty sure they are'nt for valve stems. Any ideas?

 

They look like the tops off of valve cover hold downs. If I am correct they should be splined on the inside, not threaded.

 

looks like some kind of drum key to keep the drum head tight

 

Welcome! You might want to post an intro before these guys rip you to shreds for not doing so.

Those look like the "wingnuts" that are on top of tall valve cover hold downs... or possibly an air cleaner wingnut.

 

Summit Racing sells them...check this link

http://www.summitracing.com/parts/SPE-5320/?image=large

 

GENUINE VALVE COVER "WING NUTS" FOR INLINE CHEVROLETS
VALVE COVER ACORN NUT REPLACEMENTS-216-235-261 ENGINES
look for that on the 'bay

 

Intro: Name is Garth. Drive a 66 caddy. I know, it ain't 64 and under. If they got time to rip me up, let em. I buildin' somethin' while they are on the computer. Thanks for the welcome skunk, and thanks for the help guys. Love this site!

 

Welcome to the HAMB family Garth! And a big Hello from FTW!