O.D for 7/16"-NC14 thread

[gt403cyl]

As title says I need it thread a piece of stainless to thread into an existing 7/16"-14 hole. What should I turn the O.D to for a nice fit?

Thx
GT

 

[7HC]

As title says I need it thread a piece of stainless to thread into an existing 7/16"-14 hole. What should I turn the O.D to for a nice fit?

Thx
GT

I'm not shy about revealing what I don't know, so I'll guess at 7/16" which would seem to be the major diameter of the thread.

Please note, I don't claim it's the correct answer. :whiteflag:



M

 

[Tony Wells]

Nominal size is usually the high limit for the major diameter. In other words, for your threads, 0.4375 (7/16) is the largest you want the blank. There is an allowance for coming in under that size, and it varies with each size and class of fit under discussion. For a class 2A fit, the more common, the major should be no larger than 0.4361 and no smaller than 0.4258. For a class 3A it is actually a little larger, 0.4375/0.4281. I usually leave the major at the nominal, and do a little polishing that causes it to end up a little smaller, within class 2A limits.

 

[gt403cyl]

Yes I think I had a brain malfunction,

Too many numbers running through my head I guess.

Thanks

 

[Bill Gruby]

Major Diameter (OD) for 7/16-14 is .4375.

"Billy G" )