whats he reason for some wheel bolt manufacturers to make the tapered
end of the bolts as a seperate section ,bit like a washer if i may .
here are pics to show what the funk i am on about .
STANDARD RENAULT BOLT



SEPERATE TAPER BIT


i got 2 theories on this one ;
1- seperate taper bit is made to prevent wheel bolt coming loose somehow .
2- simply for ease of mass production , i.e : they make 1 type bolt body
and stick tapered ,radius,flat ends to them .

DISCUSS YALL :P