This precision-engineered Brass Cap with an integrated M3x5 screw is designed for secure and aesthetically pleasing assembly in lighting fixtures. The 12x7mm cap provides a clean, finished look, while the corrosion-resistant brass construction ensures long-term reliability and excellent electrical conductivity for grounding applications. It is an essential component for professional-grade luminaire manufacturing.
Material: High-Quality Brass (CuZn39Pb3)
Finish: Natural Polish, suitable for plating
Thread: Integrated M3x5mm Machine Screw
Cap Dimensions: 12mm (Diameter) x 7mm (Height)
Primary Use: Electrical Connection & Terminal Protection in Lighting
Terminal Connection Points: Securing and insulating wire terminals within junction boxes of lamps and pendants.
Grounding Screw Caps: Providing a reliable and conductive point for grounding connections in metal light fixtures.
Decorative & Functional Fastening: Used in final assembly to cover and fasten components on sconces, chandeliers, and outdoor lighting.
| Specification | Value / Description |
|---|---|
| Product Type | Cap with Integrated Screw |
| Base Material | Brass (Lead-Free optional) |
| Cap Dimensions | Ø12mm x 7mm (Height) |
| Integrated Screw | M3 x 5mm (Thread Diameter x Length) |
| Finish | Natural Brass (Polished) |
| Key Property | Excellent Electrical Conductivity, Corrosion Resistance |
Superior Conductivity: Brass offers excellent electrical conductivity, making it ideal for critical electrical connections and grounding, enhancing fixture safety.
Corrosion Resistance: Inherently resistant to oxidation and rust, ensuring long-term performance and maintaining appearance, even in humid indoor environments.
Machinability & Strength: The brass alloy provides an optimal balance, allowing for precise manufacturing of the M3 thread while maintaining the mechanical strength required for repeated tightening.
Aesthetic Versatility: The natural polished finish serves as a perfect base for various final platings (e.g., nickel, chrome, antique bronze) to match any lighting design theme.
Customer Service
With over 20 years of dedication to the lighting and hardware industry, we provide a professional and reliable supply of lighting fixture parts.Our commitment to quality and excellence is validated by international certifications, ensuring that our products meet the highest global standards for performance and safety.




Q1. Can I have a sample order for the product?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A: 3-5 days for Sample preparing ,8-10 working days for mass production.
Q3. How do you ship the goods and how long does it take to arrive?
A: Ship by DHL, UPS, FedEx or TNT. It takes 3-5 days to arrive. Airline and sea shipping also optional.