Heavy-Duty Jack Nuts with Screws - This jack car metal screw set includes durable jack nuts with screws designed for secure fastening in thin metal and hollow wall applications, including license plate installation and vehicle body panels. Ideal for License Plate & Auto Use - Perfect for installing license plates on cars, trucks, and trailers. These metal jack nuts expand firmly behind the surface, providing strong grip without stripping or loosening over time. Hollow Wall & Thin Metal Fixing - Engineered for hollow wall iron skin line and sheet metal surfaces, these jack nuts offer reliable anchoring where traditional nuts and bolts are not suitable. Multiple Sizes Included - Available in M4-20, M4-25, M5-25, and M6-25, this metal nut assortment meets various installation needs for automotive, signage, billboards, and general hardware projects. ️ Durable Metal Construction - Made from high-quality metal, these metal nuts deliver long-lasting performance for indoor and outdoor applications, ensuring secure and stable installations. Jack Car Metal Screw, 2026 Jack Nuts with Screws for Installation License Plates, Hollow Wall Iron Skin Line, Billboards M4-20, M4-25, M5-25, M6-25 Metal Nut Color: Silver Material: Metal Specification: M4 Package Contents: 100 pcs * Jack Car Metal Screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.