Square Nut ZP

Product Introduction

• Standard Name: Square Nut.

• Common Names: Galvanized Square Nut, Square Cap Nut.

• Product Definition: A square-shaped internal thread fastener with an electrogalvanized surface finish. Its square structure facilitates installation using wrenches from multiple angles and effectively prevents rotation through shape-fit engagement in grooves or confined spaces, serving as a traditional and practical anti-rotation design.

Key Features of Square Nut ZP

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

  suitable for indoor or slightly damp environments.

• Square Design: The quadrilateral shape facilitates insertion into channels or passages (such as U-beams),

  preventing rotation and improving anti-loosening performance.

• Material and Strength: Commonly made of carbon steel, with medium strength; precision internal threads

  conforming to standards such as DIN 557 and ASME B18.2.2.

• Various Sizes: Diameters M4-M24, standard thickness, commonly used for roof bolts or structural

  fastening.

• Advantages: Reliable anti-rotation, economical, easy to install, but not suitable for high torque

  applications.

Working Principle

• Threaded Fit: The internal thread matches the external thread of the bolt, generating axial clamping force

  through rotation.

• Anti-Rotation Fixing: The square edges are inserted into channels or materials to prevent the nut from

  rotating with the bolt, facilitating unilateral installation.

• Load Distribution: Evenly transmits tensile force; the zinc coating reduces friction and provides corrosion

  protection.

• Installation Control: Tighten bolts after embedding to ensure stability; the principle involves mechanical

  locking and friction.

Product Applications:

• Roofing and Construction: Used with roof bolts to secure corrugated sheets or metal roofs; embedded in

  the channel to prevent rotation.

• Steel Structures: Used for U-beam or C-channel connections, providing reliable fixation.

• Machinery: Assemble brackets or frames; the square design fits channel systems.

• Automotive and DIY: Secure body parts or home projects; economical and practical.

• Industrial Fixing: Pipe supports or guardrail installation; zinc plating ensures moderate corrosion

  resistance.