Car Battery Terminals: What Size Nut, Bolt, and Wrench Do You Need?
The positive battery terminal usually has a nut size of 3/8”. The negative terminal often uses a 5/16” nut. Common thread sizes are 5/16”-18 and 3/8”-16. Use a 10mm or 12mm socket for loosening. Check for corrosion on the terminals before removal. You can find replacement nuts at a hardware store. For wrench selection, a … Read more