Deburring internal threads

[Hertz]

Good morning. I'm wondering if any of you can give some advise to deburr internal threads that have been drilled through. In the case I'm talking about, we have to drill and tap through the sides of nuts, and then they need to screw on the pins, but the burr from the drill and tap is hard to remove efficiently. Any tips?
It's a 1.5"-6 nut with 3/8-16 holes through the sides.
We do these alot.

 

[Booze Daily]

I would drill small and interpolate the minor. It's probably the drill leaving the worst of the burr.

 

[guythatbrews]

Manual or cnc machine?

 

[4GSR]

Get you a 1-1/2 - 6 thread tap and chase out the threads in the nut.

 

[Limy Sami]

X 2 on the tap, ...................and maybe a ball burr for any ''fluff'' that goes back in the cross hole

 

[guythatbrews]

Sounds ugly. Just hold them in your hand and run a tap through!

A customer wanted some SS pipes about 1.25 ID with a bunch of holes cross drilled through. Of course he wanted them cheap. We said no thanks, too many burrs. He said just hold the pipe in your hands and run a 1.25 reamer through. Easy, peasy. But still no thanks!

 

[4GSR]

Well, I would assume he would place the nut in a vise and start the tap and run it thru using a crescent wrench! Or do I have to go and hold his hand and do it for him?

 

[Limy Sami]

Well, I would assume he would place the nut in a vise and start the tap and run it thru using a crescent wrench! Or do I have to go and hold his hand and do it for him?

Why did I get the same sort of feeling Ken?

 

[guythatbrews]

Well, I would assume he would place the nut in a vise and start the tap and run it thru using a crescent wrench! Or do I have to go and hold his hand and do it for him?

That was my sorry attempt at humor. I know you didn't mean for him to hold the nut in his hand.

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[Hertz]

Get you a 1-1/2 - 6 thread tap and chase out the threads in the nut.

Lol Jesus, so simple. Did not whatsoever even think of that. Thank you, that will work just fine.

 

[4GSR]

Lol Jesus, so simple. Did not whatsoever even think of that. Thank you, that will work just fine.

Don't feel bad, I've caught myself many times in the same "duh" momnet, too. Glad to be able to help and take care.

 

[triumph406]

Can you thread mill starting from the inside/ may leave some burr, def less then conventional tapping