1937 fuel tank bung thread

[FlatheadEric]

The 1937 fuel tank bung was frozen solid with rust and I have had to drill it out then pick the remaining thread out.
Can someone please tell me the details of the bung size and thread used? I assume it is a tapered thread.

 

[Newc]

Regular us pipe thread either 14" or 3/8". Use liquid teflon when installing new plug. Newc

 

[FlatheadEric]

Thanks Newc, it has 14 TPI so from the American pipe chart it looks to be 1/2" NPT.

 

[Zeke3]

My June, 1937 Chassis Parts List says the drain plug for the fuel tank assembly 78-9002-B is p/n 353055-S, which is a 1/4"-18 standard pipe plug.

 

[35fordtn]

It is standard 1/4" NPT. If you get in a pickle we sell replacement bungs and plugs.

 

[FlatheadEric]

Thanks all. I have got hold of a 1/4" NPT stainless steel pressure pipe plug and it fits nicely.