Flat Washer ZP

Product Introduction

• Standard Name: Flat Washer (Zinc Plated).

• Common Names: Zinc-Plated Flat Washer, Electrogalvanized Washer, ZP Washer.

• Product Definition: A thin, circular ring-shaped standard fastener with a central hole, featuring an electrogalvanized (ZP) surface treatment. Its primary functions include distributing pressure from bolts or nuts on connected surfaces to prevent crushing, providing basic corrosion protection, and enabling adjustment of assembly clearances.

Flat Washer ZP Key Features

• Zinc Plated (ZP): Provides basic rust protection and a bright silver metallic sheen, enhancing corrosion

  resistance, suitable for indoor or mildly humid environments.

• Flat Ring Design: Circular flat plate structure with an inner hole matching the bolt diameter and a larger

  outer diameter, providing a uniform bearing surface and preventing nut/head embedding.

• Material and Strength: Commonly made of carbon steel, standard thickness; conforms to DIN 125,

  ASME B18.22.1, and other standards. • Various Specifications: Inner diameter M3-M48 (or #4-2"),

  various outer diameters and thicknesses (e.g., USS/SAE standards).

• Advantages: Distributes load, protects surfaces, economical and practical, easy to install.

Working Principle

• Placement: Placed below the nut/bolt head to increase the contact area.

• Pressure Distribution: When torque is applied, it evenly distributes clamping force, preventing material

  deformation or nut embedding.

• Surface Protection: Isolates the nut/head, preventing scratches or corrosion transfer; the zinc plating

  provides mild corrosion protection.

• Auxiliary Anti-Loosening: Used in conjunction with spring washers to enhance stability; the principle

  involves increased area and even friction.

Product Applications

• Machinery Manufacturing: Secures equipment parts, brackets, or covers, protecting surfaces.

• Construction Engineering: Secures steel structures or pipes, evenly distributing load.

• Automotive and Electronics: Assembles car bodies or shells; zinc plating is suitable for indoor

  environments.

• Furniture and DIY: Economical and practical for home assembly or repair.

• Industrial Equipment: Enhances stability as a standard component in production lines or warehouse

  structures.