I am looking for a bolt that is approx. 1/2" or 3/8" long x 1/4-20 thread but the head looks like a rivit. I want to know what they are called and where to buy them
no, no square shoulder they are not carrage bolts , i have herd them called huck bolts. that bare metal rpu called the a-bomber has them all over it
Rogue did a bare metal rpu a couple years ago,using bolts like you describe. He called them "locker bolts",used to bolt storage lockers together. Unfortunately,his supply got depleted,and the source dried up.
http://www.portlandbolt.com/products/****onhead.html Those are called ****on Head Bolts. Click on the above link.
it sounds as tho you are looking for a security fastner either a hex or square hole with a small dowel type in center. You live in CA so check for a fastenal fastener wharehouse as said before www.mcmaster.com is good
i'll second the "locker bolt" name, don't know if that official though. the ones he is looking for are not ****on head or security bolts, they have nothing on the head but a smooth dome, and are serrated under the head to grip the piece you are bolting to keep from turning.
Looks like the same ones I found but a different place. http://www.langequip.com/Merchant2/merchant.mv?Screen=CTGY&Category_Code=LPR-LHH