Radiator drain plug thread size

[bobfist]

Hi!

i got a new 26" repro radiator from classic industries and wondering if someone knows the size of the thread of the drain plug?

[A383Wing]

for the pet-cock? I'm thinking 1/4 pipe

Bryan

[bobfist]

Ah now i found it, strange name for this part

Pet Cock haha

[John_Kunkel]

pet cock is you favorite rooster, petcock is a drain valve. 

[bobfist]

hahah dot get it with the words here

If i called someone in the US i wouldnt dare to say the word petcock to anyone

You can image the pictures i got on google when i first searched for it