# How can I find removable plugs for standard pin headers? [closed]

I'm making a right angle adapter for a module with a 2x10 pin layout that has one blocked.

How can I find the little plastic pins to block a hole, ideally ones that are removable? I realize I could just put glue or something in there, but it would be nice to be able to pull out later if possible.

Edit: there is an existing answer with a minimum order of $1088.78 US - so I would be looking for somewhere that sold in sufficiently low quantities to be under$10.

• While questions about product selection don't fit with the Stack format, I'll give you a hint: "polarizing plug" or "polarizing key" – ThreePhaseEel Sep 13 '17 at 22:47
• I have been searching exactly those terms; and it's possible this just 'doesn't exist'. – Ehryk Sep 13 '17 at 22:47
• The manufacturers of the header also manufacture such plugs. – Ignacio Vazquez-Abrams Sep 13 '17 at 22:50
• This question was asked before, and answered, electronics.stackexchange.com/a/262852/117785 – Ale..chenski Sep 13 '17 at 23:44
• Possible duplicate of epoxy for keying box headers? – Ale..chenski Sep 13 '17 at 23:46

Found them!

They are available at http://www.frontx.com/pro/cpx079.html

• Polarizing keys may be unique to a particular make and connector series - keys for one connector series may not fit another. – Peter Bennett Sep 13 '17 at 23:26
• I understand; I haven't been able to find a name for the series shown in the image in the question other than '2.54mm pitch' or '0.1" pitch'. I was asking in reference to that particular series, and I haven't seen any demonstrable difference in any of the non-polarized brands (the holes seem to be standard, though the shape around the outside of connectors sometimes varies). – Ehryk Sep 13 '17 at 23:32
• I would ditto the comments that polarizing plugs from vendor to vendor are quite different with regard to form and fit. Checkout SAMTEC as a possible source for your right angle connector. If I recall they show the plugs right on their catalog pages with the connectors. – Michael Karas Sep 13 '17 at 23:51
• I guess I should clarify then; I want plugs to fit 'generic' headers such as these, not brand specific in any way. ebay.com/itm/302133511604 – Ehryk Sep 13 '17 at 23:53
• Like I said you are not going to find a generic solution. The plug are vendor and connector line specific. What works for a Samtec connector may just fall out of a TE/AMP connector. – Michael Karas Sep 13 '17 at 23:58

That looks like a Molex KK series or equivalent. They sell keying plugs for that series which will almost certainly fit a compatible "generic" connector:

The Molex part number for this is 15-04-9209 but you may need a different part for other manufacturers connectors or different pin spacings.

I don't know where you are, not that it matters as this site isn't for shopping questions, but where I am I can order a pack of ten of these for £0.63 and have them delivered next day.