Enhance the security and stability of your bolted joints with these premium M4 Nylon Insert Self-Lock Nuts. Crafted from high-quality aluminum alloy with a durable anodized royal blue finish, these lock nuts are designed to resist loosening caused by vibrations, making them an excellent replacement for standard nuts in various hardware, automotive, home, and outdoor applications. Key Features: · Premium Aluminum Alloy Construction: Ensures exceptional strength and durability while maintaining a lightweight design. · Nylon Insert Locking Mechanism: Provides reliable resistance against vibration-induced loosening, maintaining a secure hold in dynamic environments. · Vibration-Resistant: Ideal for applications where stability and reliability are critical, effectively preventing bolts from loosening over time. · Easy to Use: Designed for simple and fast tightening or loosening, saving you time and effort during installation or maintenance. · Anodized Surface Treatment: Enhances corrosion resistance and wear protection, extending the lifespan of the nuts. · Convenient Pack of 10: Includes ten M4 size lock nuts, perfect for a variety of projects and repairs. Specifications: · Material: Aluminum Alloy with Nylon Insert · Surface Treatment: Anodized · Size: M4 · Color: Royal Blue · Quantity: 10pcs per pack Package Includes: · 10 x M4 Nylon Insert Self-Lock Nuts These M4 Nylon Insert Self-Lock Nuts offer durable and reliable fastening solutions, combining the strength of aluminum alloy with the security of a nylon locking feature. Perfect for hardware, automotive, and home applications, they ensure your fittings remain tight and secure under vibration and heavy use.