Every bolt and nut on my brad hemis are 12 point. Actually there are no bolts on my hemis, all studs except for the 12 point rod bolts. Every bolt and nut are 12 points on my dragster chassis, some are titanium. Many racing/aircraft fasteners are cut down for clearance and mostly light weight.

Many are aircraft grade like some in this picture and are a one time use. I got a buddy who works at GE aircraft engines and gave me piles of trick fasteners.