need header bolts for my iron v-10, 5/16"x18 1" long but have to have a 3/8" six sided hex (for clearance). contacted two websites to no avail. trucks in shop waiting on the bolts....help a brother out!
Or Hedman part 9006. 5/16-18 X 1 Hedder Bolts- ZINC PLATED (16 Pack)
"This section contains the same quality hedder and collector bolts we put into every set of Hedman Hedders. Even the best designed headers may provide practically zero bolt clearance. But, with Hedman's smaller 3/8" wrench size, these hedder bolts have a smaller head than atandard header bolts, providing more clearance for installation , tighening or removal."