There are softer and harder screws and tools available.
And if the chain line is right, then there is very little lateral stress for the sprocket. Which means that the screw heads don't have to take much load to keep the sprocket in place. If tightened with the right torque and care and screws and tools with sufficient quality, then the probability to round the screw heads is marginal.
The OP wrote about the snapped spindle of his bike and now the story is about a former cog...
I didn't throw this different story in the thread.
I'm teetotal for many years.
E.
The mounting bolts are also from Velosolo:
https://www.velosolo.co.uk/shopdisc.html
M5 Grade 12.9 High-tensile Steel Hex Head Cog/Disc Bolts
And Mister EckyH, it's not about "lateral stress" but about tensioning/untensioning bolts force, if heads break off then the hub is lost, due to the steel threaded part sitting stuck in the alu of the hub's IS brake disc.
You say you didn't throw that story here, but it's
you that throw the discussion about it.
Same for my mentioning of dealer using hammer and chisel to get the driveside part of HollowTech2 out, some people here even started talking about me on another forum. Go figure haha.
I made here some statements about Shimano's Hollow Technology 2, with the Light Religion ment to cheat in racing as its motivation, and some users here started to talk about whatever related to me, instead of relevant arguments.
That's not my problem. My initial statement was that a human leg powered axle should NEVER break. That risk should be zero. Because all what is needed is to take into account the max force a human leg can deliver, put a reserve, and done.
But in order to cheat in competition, by decreasing weight of bicycle, the latters industry started to cut material (and thus weight), going therein as far as risking axle and crank breaks.
If it was for competition / to win a sec on a mile / to keep up with a rest, fine, one with plenty bucks can just throw away a bike after its single ride as to not risk fatigue breaks.
But making a standard of it, for everybody, I say no. For all but those racers, the weight "saved" is not worth the risk/cost.