The Stainless Steel Contact Lock Washer NFE 25-511 is a specialized locking washer designed to secure fasteners in high-vibration and dynamic applications. Featuring a contact/curved spring profile, it provides axial tension and frictional resistance to prevent loosening of bolts and nuts.
Manufactured from SS304 (A2) and SS316 (A4) stainless steel, NFE 25-511 washers deliver excellent corrosion resistance, durability, and mechanical strength, making them suitable for automotive, industrial machinery, construction, and marine applications.
📏 Type: Contact Lock Washer / Curved Lock Washer
🔘 Design: Curved or contact-type washer providing spring tension and friction
⚙ Material Grades: SS304 (A2), SS316 (A4)
💪 Strength Class: High tensile stainless steel – prevents loosening under vibration
🌊 Corrosion Resistance: Excellent – suitable for indoor, outdoor & marine environments
🛠 Function: Provides axial tension and prevents fastener loosening
📦 Size Range: M3 – M20 (custom sizes available)
| Specification | Details |
|---|---|
| Product Type | Contact Lock Washer / NFE 25-511 |
| Material | Stainless Steel SS304 (A2) / SS316 (A4) |
| Design Feature | Curved spring washer providing tension and frictional resistance |
| Surface Finish | Natural / Passivated |
| Applications | Automotive, Industrial Machinery, Construction, Marine Equipment |
✔ Preventing Loosening of Bolts in Vibrating Assemblies
✔ Automotive Engine, Transmission & Chassis Fastening
✔ Industrial Machinery & Equipment
✔ Construction & Structural Installations
✔ Electrical Panels & Mechanical Assemblies
✔ Marine & Offshore Equipment
✨ Anti-Loosening – maintains bolt tension under vibration and dynamic loads
✨ Precision Engineered – consistent curvature ensures reliable performance
✨ High Corrosion Resistance – ideal for harsh and marine environments
✨ Durable & Long-Lasting – premium SS304 / SS316 stainless steel
✨ Easy Installation – compatible with standard bolts and nuts
✨ Versatile Sizes – accommodates M3 to M20 fasteners
