This Iron Hex Nut SW27x5 M20x1 is a precision-engineered, hot-dip galvanized fastener designed for robust and reliable connections in lighting fixture assembly. Its standard hexagonal shape allows for easy installation with common tools, while the durable zinc coating provides excellent corrosion resistance, ensuring long-term structural integrity and a consistent metallic finish in various lighting applications.
Material: Standard Iron with Hot-Dip Galvanized Finish
Thread Type: Metric Fine Thread (M20x1)
Dimensions: Hex Width (Across Flats) 27mm, Height/Thickness 5mm.
Primary Function: Securing and fastening components in lighting structures.
Industry Application: Ideal for pendant lights, chandeliers, industrial lighting, and outdoor fixture assembly.
Used to securely join threaded rods, pipes, or bolts within the internal framework of chandeliers and pendant lights.
Essential for assembling and adjusting the height or position of components in modular lighting systems.
Commonly applied in the assembly of outdoor and landscape lighting fixtures where corrosion resistance is crucial.
| Specification Category | Detail |
|---|---|
| Product Type | Hex Nut |
| Material | Iron (Steel) |
| Finish/Color | Hot-Dip Galvanized (Metallic Grey-Silver) |
| Thread Size | M20 x 1 (Metric, 20mm diameter, 1mm pitch) |
| Hex Width (Across Flats) | 27 mm |
| Height / Thickness | 5 mm |
| Standards | General industrial fastener standards. |
Enhanced Corrosion Protection: The hot-dip galvanized coating offers superior resistance to rust and tarnishing, which is critical for maintaining appearance and strength in both indoor and outdoor lighting environments.
Secure Fastening: The M20x1 fine thread provides a tighter and more precise fit compared to coarse threads, reducing the risk of loosening due to vibration, which is common in suspended or adjustable fixtures.
Industry Compatibility: Designed to metric (M20) specifications, ensuring compatibility with internationally sourced rods, bolts, and components commonly used in global lighting manufacturing.
Durability: Made from standard iron/steel, it offers high tensile strength, ensuring a reliable and permanent connection point for critical load-bearing joints in lighting structures.
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.