Save up to an additional 20% with Bulk Pricing! ITEM DESCRIPTION: New factory OEM body bolts. Replacement for GM Part# 11503812. Sold as a set of (25). These are the EXACT bolts that are used on the assembly line, not generic hardware. Fastener Specifications: Grade: 9.8Thread: M6-1.00 (Metric)Length: 16 mmHead: 10 mm with indented hex with a 18.5 mm loose barbed washerFinish: Gold zinc plated * Also available in black Gold zinc plated (not painted) so the finish will last. These are largely used on GM 1978+ cars and 1988+ full size trucks. Most, but not all, converted to both metric and standard in 1978 and full metric in 1981. DISCLAIMER: DUE TO MID YEAR PRODUCTION CHANGES AND CUSTOM APPLICATIONS, IT IS NEARLY IMPOSSIBLE TO ACCURATELY LIST EVERY COMPATIBLE MATCH CORRECTLY DUE TO THOUSANDS OF MODELS AND VARIOUS OPTION COMBINATIONS. WE STRONGLY URGE YOU TO VERIFY THE SIZES OF YOUR EXISTING HARDWARE PRIOR TO PURCHASING TO AVOID RETURN SHIPPING CHARGES IN CASE THEY ARE NOT EXACTLY WHAT YOU NEED. IF YOU ARE UNSURE, PLEASE DO NOT PURCHASE AND CONTACT US FIRST.