DPAccessories LCM3B1CCOCH05020 20 Chrome Lug Nuts for 1970-1985 Buick Chevy Oldsmobile Pontiac 371674 611-248 Wheel Lug Nut FITS: The factory aluminum wheels on Buick (1975-1985) Chevrolet (1971-1981) Oldsmobile (1973-1981) and Pontiac (1970-1981). Commonly used on OEM snowflake wheels. REPLACES: General Motors (GM) factory part number 371674 and Dorman part numbers 9-100016.1 611-248.1 and 611-248. SPECS: 7/16"-20 Thread - One-Piece OEM Style - Mag/Shank Seat - 3/4" Hex FEATURES: A solid one piece construction with triple chrome plating to prevent rust and corrosion. Manufactured with heat treated steel for protection against rust and corrosion. INCLUDES: 20 chrome OEM style mag seat lug nuts for GM vehicles factory aluminum wheels shipped in our in our signature premium packaging.