NV+ hard drive tray screws replacement

Per information in another thread, they are 120 degree. I've successfully used 82 degree undercut 6-32 x 3/16 screws. They stick above the tray a bit, but have sufficient clearance. A standard 82 degree didn't engage well with the countersink. The undercut doesn't really engage with it properly, but it engages in a larger radius than the standard, so holds better. If I was willing to drill the holes a bit bigger, they'd have been a little more flush. The head on the 82 degree undercut is thinner than a 100 degree, so I suspect it's the better choice. I have no idea if the Dell 82 degree are undercut or standard.