I ordered the wrong length locking header bolts for my install and already cut the package so can't return them. These are part number BPP-200-076 on summit. I got them today and only removed one from the package, realized my header flange was too thick for the bolts and i have to get the longer ones. These are are 3/8-16 and 3/4 long under the head.

They sell for $47, I'll take $40 shipped.