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tubman · 09-08-2020, 11:51 AM

3/8 NPT (National Pipe Thread) Is quite a bit larger than 3/8" SAE which is the standard for nuts and bolts. As mentioned, it is pipe thread.

09-08-2020, 11:51 AM	#5
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,312	Re: Help with an 8BA head. 3/8 NPT (National Pipe Thread) Is quite a bit larger than 3/8" SAE which is the standard for nuts and bolts. As mentioned, it is pipe thread.