Here at Corvette Stainless Steel Brakes Inc. we have manufactured 100% correct caliper bridge bolts. Bolts have the correct bolt head "S" markings which were forged on 1967-82 caliper bridge bolts.  These bolts are used to bolt the two caliper halves together.  

• Front bolt dimensions are 9/16-18 x 2 1/2" 
• Rear bolt dimensions are 7/16"-20 x 2 1/2"
• Grade 8 
• Plated with Phosphate black just like the original 1967-82 Corvette bridge bolts
• Bolts can also be used on all 1965-82 Corvette calipers