From the top
The new Groove Skate hardware, great and they slide so easily, but rubbish if you want to slide on the mast without removing the screws.
Then the old groove skate hardware, very good, but still not great for leaving in the mast and sliding back in place but can be done with these
Moses 128 hardware, basic to say the least, and will not fit the skate, but the best for leaving on the mast and sliding back on the board
Lastly these are the original hardware button nuts for the Moses masts and these make great T nuts for any type of track, just grind down 2 edges to fit the track and set up as shown in the photo, cheap and easy if you have the spares.
And why do we not get given stainless washers for any of these fixings? The large ones in the photo are what I use and are available on eBay, or Lidl type stores in the tools aisle
if its just 8mm bolts you want then I bought loads off ebay, if you look closely in the box on the left there are 8mm bolts which i sprayed yellow for another job, but they are the best as not only are they allen head but they have a wide flange button head, so do not need any washers.
https://www.ebay.co.uk/itm/M3-M4-M5-M6- ... 75rEiKaIFw