5mm x 25mm Polyfix 30° Thread Profile - T20 Torx Pan Head Screws - Stainless Steel - (A2) Description
The 5mm x 25mm Polyfix 30° Thread Profile - T20 Torx Pan Head Screws - Stainless Steel - (A2) has the following features:
- Drive Size: T20
- Natural Finish
- Head Diameter (D): 8.2 mm
- Head Length (H): 2.9 mm
- Length (L): 25 mm
- Manufacturing Standard: Not Standardised
- Stainless Steel - (A2)
- Stainless Steel Material Family
- System of Measurement: Metric
- Thread Profile: 30 Degrees
- Thread Size: 5 mm
Discover more about the 30° Thread Profile Torx Pan Head Screws range.
30° thread profile torx pan head self-tapping screws are precision self-tapping fasteners for plastic, engineered specifically for modern manufacturing and prototyping. They are defined by a unique combination of features: a high-torque Torx drive for reliable installation, a low-profile pan head for a clean surface finish and a specialised 30° thread profile.
This acute thread angle is the screw's key innovation. Unlike standard 60° threads, which displace material outwards, this 30° profile is designed to slice cleanly through thermoplastics and 3D printed components. This action forms a secure, reliable thread without causing the material to bulge, split or delaminate along layer lines, a common failure point in plastic assemblies.
How 30° Thread Profile Torx Pan Head Self-Tapping Screws Work
The functionality of these 30° thread profile torx pan head self-tapping screws centres on managing material stress. When driven into a pilot hole, the 30° thread angle cuts into the plastic, displacing significantly less material than conventional self-tapping screws. This action dramatically reduces the radial stress on the hole's wall, which is crucial for maintaining the structural integrity of plastic bosses and 3D printed parts.
The Torx drive enhances this precision, allowing for high torque transmission without the risk of cam-out. This ensures the screw is driven efficiently, creating a vibration-resistant joint.
In practice, an R&D team assembling a new prototype with a 3D-printed housing can utilise these screws to fasten components directly into the printed parts. The screws will tap into the material, forming strong threads without splitting the delicate layer lines, resulting in a robust, reliable and test-ready assembly far faster than traditional tapping methods.
Materials 30° Thread Profile Torx Pan Head Self-Tapping Screws Are Made From
Accu’s range of 30° thread profile torx pan head self-tapping screws are manufactured from high-quality materials, selected for performance and reliability:
- Stainless Steel - A2: Provides excellent corrosion resistance and durability, making it ideal for prototypes or end-use parts that may be exposed to moisture or environmental factors.
- Steel - (1022): A strong and cost-effective carbon steel, perfect for general-purpose internal applications where high strength and reliable fastening are the primary goals.
Sizes and Types of 30° Thread Profile Torx Pan Head Self-Tapping Screws Available
Our selection offers a comprehensive range to support projects of all sizes, from initial prototyping to full-scale production runs. Our offering includes thread sizes from 2.2mm to 6mm and lengths from 5mm to 30mm, accommodating various component depths and load requirements.
To meet specific functional and aesthetic needs, our Steel screws are available with a protective bright zinc plating or a sleek black zinc plating. Our A2 stainless steel screws are offered in their natural, untreated finish or with a non-reflective, AccuBlack finish.
FAQs
Q: What is the main benefit of using 30° thread profile screws in plastics?
A: The 30° thread profile is designed to minimise radial stress during installation. It slices into the plastic rather than forcing it apart, which prevents cracking, splitting or bulging, especially in 3D printed parts or thin-walled plastic bosses.
Q: Why use a Torx drive on these self-tapping screws?
A: The Torx drive system provides superior engagement between the driver and the screw head. This allows for higher installation torque without the risk of "cam-out," which can damage the screw, the driver bit or the component itself. This is critical for achieving consistent and reliable clamping force in precision assemblies.
Q: Are these screws suitable for 3D printed parts?
A: Yes, they are ideal for 3D prints. Their ability to cut threads without splitting layer lines makes them a go-to choice for engineers and innovators creating functional prototypes and end-use printed components.
