Spa mirror flange set screw

[triumph76]

I think I'm venting more than I am asking a question.

I removed my mirrors to add a touch of epoxy to keep the glass from falling out and to give the assembly a coat of paint. The hex key hole had become stripped in one of the base set screws. Fortunately, I was able to get the set screw out before I used up my weeks allotment of 'sh&*s' and 'goll d#@mits'.

Looking for a replacement at the hardware store, I narrowed down the size to a 1/2" - 20 x 3/8". Of course they did not have what I needed. A trip to Fastenal was next where they confirmed the size from the damaged screw. I ordered two right away at $ 1.25 each.

With the new set screw I was able to get about two to three turns into the mirror base before there was resistance. I stopped before I damaged the threads or cracked the base.

I know I can purchase what I need from a vendor of these mirrors, but you'll use a little imagination to get to the price. It is what it is.

Again, venting in the form of a question. Is the size of the set screw that specific to the mirror assembly?

Thanks!
Andy

[SteveG]

Did the damaged set screw orc up the threads in the base? Run a 1/2X20 bottoming tap up the base (if you don't one it might be cheaper to buy a new base).
My go to when I don't have the correct tap is to take a comparable bolt and cut 3 or 4 slots up the bolt with a Dremel cut off wheel to make a clean out tap.

Steve

[pacratt]

1/2-20 Bottoming Tap
$8.87 Amazon, $9.20 Home Depot
Just a couple examples from Bing Search.
Glenn

[Bob Wright]

dumb question; are you sure it's not metric?

From google search...

Are M10 and 3/8 the same?


That said, they are very close, the 3/8" bolt is about 0.019" smaller and the pitch's are very close so the 3/8 -16 bolt will thread in the 10mm x 1.5 but the 10 x 1.5 bolt will not fit the 3/8

the M12 1.75 is closest to 1/2" bolt

[Speed Sport Engineering]

dumb question; are you sure it's not metric?

From google search...

Are M10 and 3/8 the same?


That said, they are very close, the 3/8" bolt is about 0.019" smaller and the pitch's are very close so the 3/8 -16 bolt will thread in the 10mm x 1.5 but the 10 x 1.5 bolt will not fit the 3/8

the M12 1.75 is closest to 1/2" bolt

Spoken like you own a VanDiemen.

[triumph76]

Thanks to all for the input.
It may very well be metric. Fastenal is down the street and I'll have them check it again with a thread guage. It would be very close match.

I will reluctantly spend the $ 25.00(w/shipping) for the piece if necessary, but naturally will feel like I got screwed(that was intentional). I'll report back with the result.

Thanks!

[Fred Michael]

Been wrong before but I have a hard time believing that anything SPA would not be metric