20262 Nut, 3/8-16 Hex Serrated Flange, Grade 5, Zinc Plated

Nut, 3/8-16 Hex Serrated Flange, Grade 5, Zinc Plated. For attaching side exhaust to headers. These are free-spinning until they come up tight which makes them much easier to install than deformed thread all metal locknuts. Since there is no nylon they are suitable for use in the hot exhaust system. Price is for 1. Order 8 per car.