What is this bolt style called?

[mr2mike]

Thin head with a serrated underside to grab into aluminum.

[Projek01]

Looks like a crimp on stud style:

http://www.directindustry.com/prod/psm-international-ltd/crimp-on-studs-56102-572238.html

[jacky4566]

Here ya go.

Self-Clinching Studs (https://www.fastenal.com/web/products/fasteners/riveting-self-clinching-products/self-clinching-studs/_/Navigation?term=&termca=&termpx=&sortby=webrank&sortdir=descending&searchmode=productSearch&filterByVendingMachine=&r=~|categoryl1:%22600000%20Fasteners%22|~%20~|categoryl2:%22600191%20Riveting%209and%20Self-Clinching%20Products%22|~%20~|categoryl3:%22604559%20Self-Clinching%20Studs%22|~)

[Thaco]

the clincher, lol

[mr2mike]

edit.

Clincher... thanks.
Found some on McMaster.
Thaco... guess what'll be at the border for you.

Thanks.

[Thaco]

Originally posted by mr2mike
edit.

Clincher... thanks.
Found some on McMaster.
Thaco... guess what'll be at the border for you.

Thanks. a few clinchers, lol.. that's awesome!!