Finding the right screw

[Gep]

Hi all, I'm trying to find the right screw to attach my speaker to a speaker stand.
I have the details (see image) but at the nearby hardware store they are pretty useless.
First they gave me one screw (M5 I believe) which is too small. Then another one (M6 I believe) which is slightly too big.
Is there a website where I can buy the right screws?
Many thanks!

 

[HERTS P&D]

Where you being for the past 9 years?

Andy

 

[JobAndKnock]

Probably looking for a good screw, Andy. I mean who doesn't?

If an M5 is too small and an M6 is too big would this be a non-metric screw such as BSW (Whitworth) or BA (Armstrong)?

 

[scbk]

Most hardware stores don't do much in the way of imperial bolts, but a local nut/bolt/fixings supplier would, or ebay.

First one that came up on ebay, not that you need stainless:
https://www.ebay.co.uk/itm/1-4-5-16-3-8-1-2-UNC-HEX-SET-SCREWS-A2-STAINLESS-STEEL-FULLY-THREADED-BOLTS/112409679690?_trkparms=ispr=1&hash=item1a2c23974a:g0wAAOSwKytZG3T8&amdata=enc:AQAFAAACcBaobrjLl8XobRIiIML1V4Imu%2Fn%2BzU5L90Z278x5ickkAgU0umhwUTmgTFbE5cu7zYbpuAHZKv2WEMHJy%2B1NBdOAHWAuYET%2FE0bF5ili69bIw3twdKlvhxoEOc9wlM3V5C5DEI80e6PSIpOkglH5Ecmj8rCDSwCFetXIeTwfAh9shZVLUJ8Jjx622%2FDiel7ef0qlfn9%2BeysgRmRWXAWOrR9lKVGyM94z6psPMR1sSUwsNBXwWbi7bo%2BBfIupF%2BUSvYIqwGilTms3yp5A4wTpjj%2BBfpTsRjbuK5HoAuq3AeSi3%2FH8I2YlQ3K96grIbh6r03XFLzqFPVgBIhk5wiJgNkl%2BRGELy9GTfnKDwivtv9NQPFMYbLSXVQuUwem7ToTqQgPiR5ct7f0433ds%2BLbNhHdev%2F%2FIBOh0fJqfNhvAE5ozKGY9v9Z08vMz1ArfXYgzugZNgXAu7P6pkSTuHxvAHoW49GfSzv%2BQ0BKIvXtlBlVlNC0ypFAOiDMA0yPEvFpHSXkGzxAFQBORkE68YMeuN89oYMtnf%2BkAl%2B53OQpbN%2BMsbYMkKitNYqHnIrIR14RJz6CmcPWL57neGqeTvl1mICsmkMZCdhXNVVMqwSmag2sOoaKmtiXVavj4%2FF0MeeryfgrielS0lQXKzMKGEC02NFDhfMIr57V9DOXomEtNNHa7ajm%2FXOldPHwHyR2%2FUO%2BNhN2CjJadyP7oXAHdpGW6QL%2BRNStUTpEc7D2sd4op7n0UAdKx0yNdJsaOYCoYtLqZ4qozD%2BfFRpIoeZhII4mv3ygx0306GsgIbDusZ356Fuh7hsDLgXaA4EKKZsc%2FaiwVrg%3D%3D|cksum:112409679690605ec673afd242f893f501b4df397dde|ampidL_CLK|clp:2334524

 

[JohnD]

edit

see below

 

[JohnD]

Ah, if your document is correct, it is

https://www.diynot.com/diy/attachments/musiccast20wallmountscrewhole-png.230823/

diameter quarter-inch

TPI 20

So probably 1/4" UNC

see here

probably American.

And you need a screw not a bolt

here you are

https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=1/4"+unc+screw+hex&_sacat=0&LH_TitleDesc=0&rt=nc&LH_PrefLoc=1

that was easy.

 

[ETAF]

the spec says a 1/4" 20 Thread bolt
https://www.accu.co.uk/en/imperial-...LChh2YTQyxUz3wh8c8IzZP0Tkwos_gUMaAijBEALw_wcB
https://www.amazon.co.uk/NICEYRIG-I...read+bolt&qid=1618736936&s=electronics&sr=1-2

 

[JohnD]

the spec says a 1/4" 20 Thread bolt

You're right

On careful reading, it even says UNC

If all else fails, read the instructions, eh?

 

[Gep]

Thanks guys, that was extremely useful. I was focusing on the hole specifications, didn't notice the screw specifications...

 

[foxhole]

You could just use a standard bolt in the wall mount bracket and lock it in with a nut.