Cross recess pan head screw

Understanding the Pan Head Geometry

The "Pan Head" is characterized by a slightlydomed top with a flat bearing surface underneath. It is taller than a countersunk head but lower than a round head, offering a practical compromise. This shape is designed to sit on top of the material (not flush), providing a visible but unobtrusive fastening point. The wide head diameter prevents the screw from pulling through thin sheet materials.

The Cross Recess (Phillips) Drive

The cross recess, commonly known as the Phillips drive, is engineered for high-speed automated assembly. Unlike a slotted screw, the cruciform shape allows the driver bit to engage quickly without needing precise alignment. Additionally, the Phillips design has a built-in "cam-out" feature—when torque exceeds a certain level, the bit will slip out of the recess, reducing the risk of over-tightening and stripping the screw head.

Material and Finish Options

We offer cross recess pan head screws in several material and surface treatment combinations to suit your application:

Grade 4.8 Carbon Steel (White Zinc)

The standard choice for general-purpose fastening. Offers adequate strength for light-duty applications with a bright, corrosion-resistant finish suitable for indoor use.

Grade 4.8 Carbon Steel (Black Zinc)

Provides the same mechanical properties as white zinc but with a darker aesthetic. Often preferred for electronics and equipment where a non-reflective finish is desired.

Grade 8.8 Carbon Steel (White Zinc)

A high-tensile option for applications requiring greater clamping force. Suitable for automotive and machinery where vibration resistance is important.

Stainless Steel (A2/A4)

The premium choice for outdoor, marine, or food-grade applications. Offers inherent corrosion resistance without relying on a plated coating.

Quality Assurance

We ensure consistent quality across all material grades. An EN 10204 3.1 Material Certificate is available upon request to verify the chemical composition of your batch. Please note that third-party inspection services require an additional fee.

Common Applications

Cross recess pan head screws are ubiquitous in modern industry:

• Consumer Electronics: Securing plastic housings on TVs, computers, and appliances.
• Electrical Panels: Fastening terminal covers and junction boxes.
• Automotive Interiors: Attaching trim panels and dashboard components.
• HVAC Systems: Assembling ductwork and ventilation covers.

Frequently Asked Questions

What is the difference between Phillips and Pozidriv?

While both are cross-shaped drives, they are not interchangeable. Phillips has a simple cross pattern, while Pozidriv has additional smaller ribs between the main cross arms. Using a Phillips driver on a Pozidriv screw (or vice versa) will result in poor engagement and likely strip the head. Our screws use the standard Phillips (cross recess) drive.

Whydo Phillips screws "cam out"?

The Phillips drive was intentionally designed to allow the driver bit to slip out of the recess when a certain torque is reached. This was originally a feature to prevent over-tightening in early automated assembly lines. While it can be frustrating for manual work, it protects the screw and the workpiece from damage.

When should I choose a pan head over a countersunk head?

Choose a pan head when you do not need a flush surface and want maximum bearing area. Pan heads are better for thin materials (like sheet metal or plastic) because the wide head won't pull through. Countersunk heads are only suitable when you have enough material thickness to machine a conical recess.