30-Piece 3/8-16, 5/16-18 Interior | Exterior | Engine Bay | Chassis | Body Bolts Hardware (FITS: Classic Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac, GMC Trucks, GM A, B, C, D, E, F, G Body Cars)
- Quantity: 10 GM Part# 3986997 Grade: 9.8 Thread: 3/8-16 (standard) Length: 1" Head: 9/16" Indented Hex Head with 1" Outside Diameter Loose Washer Finish: Black Phosphate
- Quantity: 10 GM Part# 3846202 Grade: 9.8 Thread: 5/16-18 (standard) Length: 1" Head: 1/2" Indented Hex Head with 7/8" Outside Diameter Loose Washer Finish: Black Phosphate
- Quantity: 10 GM Part# 3960314 Grade: 9.8 Thread: 5/16-18 (standard) Length: 13/16" Head: 1/2" Indented Hex with 21/32" Outside Diameter Fixed Washer Finish: Black Phosphate