What Are These in Real Life?

[Ironflight]

So…our QB wings for the F1 came in a really nice roll-around rack, and the outboard rib had a beautifully-made wood and pipe bracket to rest in the rack. It is attached via two round rubber/metal fittings that nest perfectly in the rib lightening holes. I don’t think they were custom made, but they fit like they were - gotta believe that they are some sort of semi-standard hardware store/construction/plumbing fitting of some sort. Now that we’re working on the wings, I probably will never use them again, but I am curious what they are - we’ve got folks here from dang near every profession and trade - someone should know….

 

[mburch]

I bet this started life as a couple of expanding pipe plugs / sewer cleanout caps, similar to:

 

[Mike S]

Sure looks like a test plug for plumbing.

 

[Ralph Inkster]

Pretty slick, what ever they are!

 

[JonJay]

Pretty obvious really. Aircraft lightning hole rubber grommet plugs. Come on Paul, geez…..

 

[Ironflight]

Pretty obvious really. Aircraft lightning hole rubber grommet plugs. Come on Paul, geez…..

Yeah….but I can’t find what page they’re on in the ACS catalog…….

 

[swjohnsey]

Another guess is an expansion plug for a car engine block. They come in a variety of sizes bigger and small than two inches.

 

[VA Maule]

I bet this started life as a couple of expanding pipe plugs / sewer cleanout caps, similar to:

View attachment 91656

And the winner is….mburch

I’ve used them by the thousands for the clean out stack pipe between the residential home and the new installed public sewer systems and to seal the lines during construction at the end of the day.

 

[Jerry Fischer]

Yeah….but I can’t find what page they’re on in the ACS catalog…….

Look harder!

 

[Webb]

just a simple typing error. ACE / ACS. After all, you can find them in the ACE aircraft hardware section.

 

[HFS]

I bet this started life as a couple of expanding pipe plugs / sewer cleanout caps, similar to:

View attachment 91656

Depending on the "Pucker Factor", well you can imagine the rest ...

HFS

 

[rv7boy]

Paul, now you know what you can use them for…should you ever need to!

 

[Breezy]

So…our QB wings for the F1 came in a really nice roll-around rack, and the outboard rib had a beautifully-made wood and pipe bracket to rest in the rack. It is attached via two round rubber/metal fittings that nest perfectly in the rib lightening holes. I don’t think they were custom made, but they fit like they were - gotta believe that they are some sort of semi-standard hardware store/construction/plumbing fitting of some sort. Now that we’re working on the wings, I probably will never use them again, but I am curious what they are - we’ve got folks here from dang near every profession and trade - someone should know….

View attachment 91652View attachment 91653View attachment 91654View attachment 91655

Here you go:

JONES STEPHENS 4 in. Pipe Size x 1-7/8 in. Height Mechanical Test Plug with Galvanized Steel Flanges for Cast Iron and Plastic Pipe T31004 - The Home Depot

4 In. Test Plug T31-004

www.homedepot.com

$2.79 at your local HD.