RCA thread - need a tap. What size?

stevebeccue · 26th January 2005, 07:41 PM

Please help. I have just finished the P101 from ESP. I am
delighted with the results. The heat spreader is 1/4" thick
AL. I would like to tap threads for the RCA jacks, but cannot
identify the tap I need. Can anyone tell me the tap size?

Thanks ....

Steve

BrianDonegan · 26th January 2005, 09:10 PM

I think we'll need a little more info. Maybe a picture and/or brand of the RCA?

-b

BobEllis · 26th January 2005, 09:49 PM

are you sure that you want to ground your input jacks to the chassis? It certainly has been done, but ground loops are easier to eliminate if the RCA is isolated from the chassis.

stevebeccue · 26th January 2005, 11:04 PM

The RCA jacks I have are Dayton Audio, solder type, part number 090-278. They are gold. I presume all threaded RCA jacks with this type of nut are the same thread..... (And maybe I'm wrong)...

Thanks for the comment about avoiding ground loops. I think
I have this under control.

anatech · 26th January 2005, 11:58 PM

Hi Steve,
No, they are not all the same size. Take the jack to a hardware store and try different nuts on. Be aware it may be metric or imperial.
-Chris

BrianDonegan · 27th January 2005, 12:41 AM

The hardware store will likely have a gauge board with different threaded holes you can try it in. Are you looking for the thread size of the plastic part or the tiny brass part on the end. The plastic part should be a standard imperial thread size, as the metal nuts typically used on these are (wait, I'm thinking of the Dayton binding posts - sorry).

-b

26th January 2005, 07:41 PM	#1
stevebeccue diyAudio Member Join Date: Dec 2004 Location: California Coast	RCA thread - need a tap. What size? Please help. I have just finished the P101 from ESP. I am delighted with the results. The heat spreader is 1/4" thick AL. I would like to tap threads for the RCA jacks, but cannot identify the tap I need. Can anyone tell me the tap size? Thanks .... Steve __________________ Steve Beccue

26th January 2005, 11:04 PM	#4
stevebeccue diyAudio Member Join Date: Dec 2004 Location: California Coast	The RCA jacks I have are Dayton Audio, solder type, part number 090-278. They are gold. I presume all threaded RCA jacks with this type of nut are the same thread..... (And maybe I'm wrong)... Thanks for the comment about avoiding ground loops. I think I have this under control. __________________ Steve Beccue

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26th January 2005, 09:10 PM	#2
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	I think we'll need a little more info. Maybe a picture and/or brand of the RCA? -b

26th January 2005, 09:49 PM	#3
BobEllis diyAudio Member Join Date: Sep 2003 Location: Upstate NY	are you sure that you want to ground your input jacks to the chassis? It certainly has been done, but ground loops are easier to eliminate if the RCA is isolated from the chassis.

26th January 2005, 11:58 PM	#5
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Steve, No, they are not all the same size. Take the jack to a hardware store and try different nuts on. Be aware it may be metric or imperial. -Chris

27th January 2005, 12:41 AM	#6
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	The hardware store will likely have a gauge board with different threaded holes you can try it in. Are you looking for the thread size of the plastic part or the tiny brass part on the end. The plastic part should be a standard imperial thread size, as the metal nuts typically used on these are (wait, I'm thinking of the Dayton binding posts - sorry). -b

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