Machine Screw Pan Head ZP

Product Introduction

• Standard Name: Pan Head Machine Screw, Zinc Plated.

• Common Chinese Names: Zinc-Plated Pan Head Machine Screw, Flat Pan Head Machine Screw.

• Product Definition: A precision screw featuring a low, rounded dome head (pan head) designed for use with nuts or pre-threaded holes. The pan head design provides an effective bearing surface for tooling and applies pressure. The surface undergoes zinc plating (ZP) treatment, offering economical basic rust protection suitable for most indoor or dry general industrial environments.

Machine Screw Pan Head ZP Key Features

• Pan Head Design: The slightly curved cylindrical head provides a large pressure surface and an

  aesthetically pleasing appearance. Its slightly protruding surface facilitates torque application.

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

  and making it suitable for indoor or mildly humid environments.

• Drive Type: Commonly Phillips or slotted screwdrivers for easy screwdriver operation and to prevent

  slippage.

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

  conforming to standards such as DIN 7985 and ISO 1580.

• Advantages: Uniform pressure distribution, economical and practical, easy to install, but not suitable for

  highly corrosive environments or applications requiring flush surfaces.

Working Principle

• Threaded Fit: The precision thread matches the nut or internal threaded hole, generating axial clamping

  force through rotation.

• Head Pressure Distribution: The pan head provides a wide contact surface, evenly distributing pressure

  and preventing material deformation.

• Preload Generation: When torque is applied, the zinc plating reduces friction, improves efficiency, and

  provides corrosion protection.

• Installation Control: Precise force is applied using a screwdriver, preventing overtightening and damage

  to components; the principle involves friction and mechanical interlocking.

Product Applications

• Electronics and Electrical Appliances: Secures panels, housings, or circuit boards, providing an

  aesthetically pleasing finish.

• Mechanical Manufacturing: Assembles instrument, machine tool, or equipment components, ensuring

  even pressure distribution.

• Automotive and Aerospace: Secures interior trim or lightweight components; zinc plating is suitable for

  indoor environments.

• Furniture and Woodworking: Connects metal fittings or sheet metal, offering economical and practicality.

• DIY and Repair: Universal fasteners for everyday projects; readily available and reliable.