3.5mm x 25mm Polyfix 30° Thread Profile - Phillips Pan Head Screws - Stainless Steel - (A2) Description
The 3.5mm x 25mm Polyfix 30° Thread Profile - Phillips Pan Head Screws - Stainless Steel - (A2) has the following features:
- Drive Size: PH2
- Natural Finish
- Head Diameter (D): 6.5 mm
- Head Length (H): 2.55 mm
- Length (L): 25 mm
- Stainless Steel - (A2)
- Stainless Steel Material Family
- System of Measurement: Metric
- Thread Profile: 30 Degrees
- Thread Size: 3.5 mm
Discover more about the 30° Thread Profile Phillips Pan Head Screws range.
30° thread profile phillips pan head self-tapping screws are precision-engineered fasteners designed for modern manufacturing and assembly involving plastics.
Their design integrates three key features: the specialist 30° thread profile for minimising radial pressure, the globally recognised phillips drive for accessibility, and a classic pan head. This pan head features a slightly domed top and a flat bearing surface, offering a clean, functional finish and reliable clamping for a wide variety of applications.
How 30° Thread Profile Phillips Pan Head Self-Tapping Screws Work
These components are specifically created to address the challenges of fastening plastic components. As self-tapping screws, they cut their own mating threads into a pre-drilled pilot hole, creating a secure and precise join.
The key to their performance is the 30° thread. This sharp, acute angle displaces less material as it's driven, dramatically reducing the hoop stress that typically causes plastic bosses and thin walls to crack or split. This makes them perfect for delicate assemblies.
An engineer designing an automotive dashboard assembly needs to secure a custom-moulded plastic trim piece to the main structural housing. By using these screws, they can achieve a tight, vibration-resistant fit without risking cosmetic and structural damage to the plastic component. The pan head provides a clean, professional finish and a solid clamping surface.
Materials 30° Thread Profile Phillips Pan Head Self-Tapping Screws Are Made From
To suit a variety of applications and environments, Accu supplies these specialist screws in several material and finish combinations:
- Steel (1022 Grade): A robust and economical choice, offered with a bright Zinc Plated finish for corrosion protection or a black zinc plated finish for a dark, aesthetic appearance.
- A2 Stainless Steel: Delivers superior corrosion and oxidation resistance, making it essential for components that may be exposed to moisture or other elements. This is available in a natural, untreated finish or with our matte AccuBlack finish.
Sizes and Types of 30° Thread Profile Phillips Pan Head Self-Tapping Screws Available
Our range is precision-manufactured to support projects of all scales, from rapid 3D printing prototypes to full-scale production. These components are available in thread sizes from 2.2mm to 6mm and lengths from 5mm up to 35mm. All components in this category feature the specialist 30° thread profile, a Phillips drive, and a pan head.
FAQs
Q: Why is a 30° thread profile better for use with plastics?
A: The 30° thread profile is designed to cut into plastic with minimal radial force. This significantly reduces the stress on the material, preventing the plastic boss or housing from cracking, which is a common failure point with standard 60° threads.
Q: What is the advantage of a pan head?
A: A pan head is a very common head type with a flat underside and a slightly domed top. It provides a good bearing surface for general-purpose applications and is known for its clean, functional appearance.
Q: Do I need a pilot hole for these screws?
A: For optimal performance, a pilot hole must be drilled into the plastic component first. The diameter of this hole is critical and will vary based on the screw size and the type of plastic being used. The self-tapping screw then forms its own threads within this hole.
