I bought these to fix my music equipment into a studio rack - and if you've ever had to use these type of fixings before, you'll know it can be a real struggle to squeeze the back fixing into the rack.
Not so with these. The washer was housed in a fixing which, for some unknown reason was easier to get in and out of my racks than any other I had come across before - brilliant!
But not so brilliant - because unlike the type of nuts music equipment is usually fixed into racks with (small & tidy bolts that sit neatly inside the rack ears of my equipment) these screw heads are big, ugly cumbersome things that practically spill over the edge of the rack ears on my equipment.
This makes it hard for kit to fit neatly into my racks and I think looks pretty ugly - it does fit, but it takes a lot of wiggling to make sure the bolts don't interfere with each other.
However, there is one last bit of good news. The screws come with little plastic washers (not pictured here) that fit between the screw head and your equipment, protecting it from 'Rack rash'. Nice!
So overall - these are acceptable. They're good quality, it's just the screws are too big in my opinion. You won't have a problem, they will work - they'll just look a bit ugly, so they get 3 stars instead of 5.