Speaker fixing screws and t-nuts

[Mr. Foxen]

So, what size is good? seems the holes in my 18" cab are slightly different, meaured OK, in practice not so much (metric vs. imperial I bet). Also, amo doing overtime to cover the cab I bought on Saturdays, so I need to buy online and not see what I'm getting, so someone let me know. Existing screws are an inch and a quarter long.

[stevie]

M6 is best, but won't fit the holes in every speaker. M5 will normally fit. I believe Screwfix is cheaper than most for t-nuts and bolts. It might not be too expensive to order some of both sizes - your delivery charge will probably cost you more than the nuts and bolts.