(Topic ID: 264071)

Switch stack machine screws

By jasonspoint28

1 year ago


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  • 17 posts
  • 8 Pinsiders participating
  • Latest reply 1 year ago by jasonspoint28
  • Topic is favorited by 1 Pinsider

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#1 1 year ago

Hey guys, I was tightening up some switch stack screws on Sky Jump and found one that was stripped. Does anyone know what size these are? They look like they have a finer thread than a 6-32, maybe a 6-40, or 5-40?

I’m putting in an order for PBR soon and would like to know what I’m looking for before contacting them. Thanks.

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#2 1 year ago

Some are 5-40, some are 4-40, and some are 3-48. Take your screw to the hardware store and compare to screws they have there.

#3 1 year ago

deleted, not relevant

#4 1 year ago

Thanks Howard. I tried that at Menards and didn’t find a match. I could give Fastenal a try on Monday, maybe Fleet Farm?

#5 1 year ago

ace hardware in your town

#6 1 year ago

Post a picture of the relay. If I have one like it I'll tell you the screw size.

#7 1 year ago

I always forget about Ace, I’ll give them a try.

#8 1 year ago

Probably #5-40 round head machine screws

#9 1 year ago

Thanks guys. Here’s where the stripped screw is from, the switch bank for the 1-7 rollovers. Sorry about how dirty it is, I’m not good at cleaning the inside of these things. Please don’t repost this in the “horror pics” thread.

I would like to invest in getting an assortment of hardware to have on hand for cases such as this. Any suggestions on what I should stock up on?

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#10 1 year ago

Those look like 5-40 which my local Ace Hardware carries in various lengths.

#11 1 year ago

Most of them I've encountered are 5-40. If you can't find them locally, Grainger carries some in various lengths

#12 1 year ago

Looks like 5-40 is the winner and Ace is the place. Thanks for all of your input. I’ll venture out to Ace today while I’m still allowed to leave the house.

#13 1 year ago

If in doubt, buy ones that are longer than needed. You can cut them down but you can't make them longer. Not ideal but works in a pinch. Another trick when cutting them is to screw a nut on the fastener and run it all the way down. Then after cutting, remove the nut to clean up any burr on the cut end.

#15 1 year ago

At Ace you'll find them in those slide out drawers above the regular hardware bins.

#16 1 year ago

Another option is to acquire a couple used units as parts donors (ie., steppers, score motors). I have good luck finding them on eBay.

I scavenge switch stack screws/nuts (like you’re looking for), plus switchblades, springs, Bakelite switch spacers, and various other hard to find parts from them.

Alex

#17 1 year ago

Thanks for all the help everyone. Here’s the start to my hardware collection. Mostly from Ace, but I did find some at Menards and there’s a few from PBR.

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