This sounds extreme but MS 21042 nuts weigh half what AN365 nuts weigh. 0.03 oz vs 0.08 o for 10-32. Thats the best my scale gets. Cost at Spruce is $.32 vs $.09 for 10-32. I have an old can of them and use them when clearance is an issue. Here I needed a bit of help on my rudder pedal attach. But if you use 100 10-32 stop nuts it would save you 3 lbs for $23, so maybe its not all that dumb.