These aluminum alloy countersunk cup washers are designed for RC car assembly, modification and decorative upgrades. CNC machined from lightweight aluminum alloy and finished with anodizing, they offer a clean appearance while helping protect the mounting surface around the screw head.
The cup-shaped countersunk design provides a neat, finished look when used with compatible M3 or M4 screws. The washer helps distribute pressure around the fastening point and can also enhance the appearance of chassis plates, body panels, brackets and other visible RC components.
Available in multiple anodized colors, these washers are suitable for customizing RC cars, trucks, crawlers and other model vehicles. Different colors can be matched with other aluminum upgrade parts to create a more coordinated appearance.
Key Features: CNC-machined aluminum alloy construction, lightweight design, anodized surface finish, M3 and M4 size options, multiple color choices, decorative and protective function, and suitability for
| Product Name | Aluminum Alloy Countersunk Cup Washers for RC Cars |
| Product Type | Countersunk Cup Washer / Screw Finishing Washer |
| Material | Aluminum Alloy |
| Manufacturing Process | CNC Machined |
| Surface Finish | Anodized |
| Available Sizes | M3 / M4 |
| M3 D Diameter | 3 mm |
| M3 F Diameter | 9.7 mm |
| M3 L Height | 3.5 mm |
| M3 B Diameter | 6.9 mm |
| M3 A Diameter | 5.75 mm |
| M4 D Diameter | 4 mm |
| M4 F Diameter | 11.85 mm |
| M4 L Height | 4.45 mm |
| M4 B Diameter | 8.5 mm |
| M4 A Diameter | 7.4 mm |
| Color Options | Blue, Gold, Black, Silver, Orange, Green, Sky Blue, Wine Red, Pink, Titanium Gray, Royal Blue, Purple and Other Colors |
| Design | Countersunk / Cup-Shaped |
| Compatible Screws | M3 or M4 Socket Head Screws |
| Feature | Lightweight |
| Feature | CNC Precision Machined |
| Feature | Decorative and Protective |
| Feature | Corrosion-Resistant Anodized Finish |
| Application | RC Cars, RC Trucks, RC Crawlers and Other RC Model Vehicles |
| Typical Use | Body Panels, Chassis, Brackets and General RC Upgrade Parts |
| Unit | mm |
