Contact Spring Washer Size 14 mm Thickness 2.4 mm NF25511 Standard | AOBSCO

The Contact Spring Washer serrated type is produced by AOBSCO following the NF25511 standard. Made from high-quality spring steel, it features a ribbed conical top surface providing 360-degree locking force beneath screw heads or nuts to prevent loosening from torque, pressure, and vibration. This washer is essential for reliable fastening in construction materials and building supplies across Saudi Arabia.

• Size: 14 mm
• Thickness: 2.4 mm
• Outer diameter (d2): 30 mm
• Height (h) from highest to lowest point: 3.7 mm
• Ribbed conical top surface for enhanced locking force
• Standard: NF25511
• Material: High-quality spring steel
• Prevents loosening under torque, pressure, and vibration