Hex Head Plastic Screws – Wide Range of Variants for Industrial Application
Our range of hex head plastic screws includes a broad spectrum of standardized and application-specific solutions. These plastic hex head screws are based on common standards such as DIN 933 / ISO 4017 (fully threaded) and DIN 931 / ISO 4014 (partially threaded), ensuring easy integration into existing designs.
Our hex head plastic screws are available in lengths from 3 to 150 mm and with metric thread sizes from M2 to M24, making them suitable for both delicate connections (e.g. in precision engineering or electronic components) and larger assemblies in mechanical and plant engineering. Depending on the application, these plastic hex head screws can be supplied with full thread or partial thread to ensure optimal fastening performance. Standard colors include natural nylon, black (PA), white (PTFE), and grey (PVC).
In addition, numerous variants of hex head plastic screws are available, including flanged hex head screws with an integrated washer (diameters from 9.0 to 19.5 mm). These improve load distribution and protect sensitive surfaces. For special requirements and flexible assembly, hex head plastic screws with an additional drive are also available, for example slotted or internal Torx (6-lobe).
In addition to standard designs, our range also includes self-locking hex head plastic screws (Plastilockscrews), which reduce unintentional loosening caused by vibrations and eliminate the need for additional locking elements. This makes Bülte hex head plastic screws a versatile, standards-compliant solution for a wide variety of technical requirements and applications.
Hex Head Plastic Screws vs. Metal Screws – When Plastic Is the Better Choice
Hex head plastic screws are the ideal solution when conventional metal screws reach their limits. They offer key advantages in applications where corrosion resistance, electrical insulation, and low weight are critical factors. Thanks to compliance with DIN 933 / ISO 4017 and DIN 931 / ISO 4014, these plastic hex head screws can be used as a direct alternative to metal screws—while providing enhanced functional performance. Below is an overview of the key differences:
| Criterion | Hex Head Plastic Screws | Metal Screws |
|---|---|---|
| Corrosion Resistance | Rust-free, corrosion-resistant | Prone to corrosion and rust |
| Weight | Lightweight plastic material | Heavier metal construction |
| Electrical Conductivity | Non-conductive, electrically insulating | Electrically conductive |
| Chemical Resistance | High resistance (depending on plastic material) | Limited chemical resistance |
| Mechanical Strength | Lower strength than metal screws | High mechanical strength |
Choosing the Right Material for Hex Head Plastic Screws
Hex head plastic screws from Bülte are available in a wide range of materials, allowing optimal selection for specific applications. The material of a plastic hex head screw is crucial in determining its performance under mechanical load, temperature, and chemical exposure.
Nylon (PA) hex head screws are the most widely used option. These plastic hex head screws offer an excellent combination of strength, toughness, and wear resistance, making them ideal for general-purpose applications in mechanical engineering, electrical systems, and equipment manufacturing. These durable nylon screws and bolts are the best choice when no special chemical or thermal resistance is required.
Hex head screws made of polypropylene (PP) are designed for use in chemically aggressive environments. These plastic hex head screws provide high resistance to acids, alkalis, and moisture, making them ideal for the chemical industry, plant engineering, and damp environments.
PVC hex head screws offer a cost-effective solution with reliable chemical resistance. These plastic hex head screws are particularly suitable for applications where budget considerations are important without compromising essential performance.
For high-performance requirements, hex head screws made from high-performance plastics such as PEEK or PTFE (Teflon) are available. These premium plastic hex head screws deliver exceptional temperature resistance, mechanical strength, and durability, making them suitable for extreme conditions in industries such as medical technology and advanced engineering.
The Bülte product range also includes transparent hex head screws made of polycarbonate (PC), as well as versions made from glass fiber reinforced plastic (GFRP). Upon request, hex head plastic screws are also available in polyethylene (PE) and polyacetal (POM). For outdoor applications requiring high UV and weather resistance, PVDF hex head screws are the recommended solution.
Are you looking for durable, lightweight, electrically insulating plastic hex head screws? Contact us to find the perfect solution for your industrial application.
Hex Head Plastic Screws – Non-Conductive, Corrosion-Resistant & Reliable
Our hex head plastic screws are non-conductive and electrically insulating, making them ideal for applications in electrical engineering and electronics. They effectively prevent short circuits and ensure safe, reliable fastening of components and housings. In addition, plastic hex head screws offer excellent corrosion resistance, making them the perfect choice for use in humid, aggressive, or outdoor environments. Unlike metal fasteners, theydo not rust and maintain their performance even under continuous exposure to water, moisture, or chemicals.
Electronics and Electrical Engineering
- Fastening of housings and circuit boards
- Prevention of short circuits thanks to electrical insulation
Chemically Demanding Environments
- Ideal for plant engineering and laboratory equipment
- Use of corrosion-resistant hex head plastic screws in aggressive media
Outdoor and Humid Environments
- No rust formation under weather exposure
- Perfect for outdoor applications
Lightweight Engineering, Model Making & Automotive
- Ideal for interior components
- Lightweight plastic fasteners instead of metal parts
Mechanical Engineering (low-load applications)
- Fastening of covers and protective elements
- Housing assemblies
Food Industry and Medical Technology
- Suitable for metal-free constructions
- Meet hygiene and cleaning requirements
FAQ: Hex Head Plastic Screws
What are the advantages of hex head plastic screws?
Hex head plastic screws are corrosion-resistant, lightweight, and electrically insulating. They also offer excellent chemical resistance and are ideal for applications where metal screws reach their limits.
What materials are available for hex head plastic screws?
Hex head plastic screws are available in materials such as nylon (PA/polyamide), PP (polypropylene), PVC, POM, PC (polycarbonate), PVDF, and PEEK. The material determines key properties like strength, chemical resistance, and temperature performance.
Are hex head plastic screws available in standard sizes?
Hex head plastic screws are available according to common standards such as DIN 933 / ISO 4017 (fully threaded) and DIN 931 / ISO 4014 (partially threaded). They cover metric sizes from M2 to M24 and can be used as a direct alternative to metal screws.
What should be considered when installing hex head plastic screws?
When installing hex head plastic screws, it is important to apply the correct torque, as plastic screws are more sensitive to overloading than metal screws. It is also recommended to use matching plastic washers and nylon nuts for optimal performance.
Can hex head plastic screws replace metal screws?
Hex head plastic screws can replace metal screws in many applications, especially in non-load-bearing connections. They are particularly suitable where low weight, corrosion resistance, or electrical insulation is required.
Are hex head plastic screws suitable for outdoor use?
Hex head plastic screws are generally suitable for outdoor applications as they do not rust. For high UV resistance, materials such as PVDF, PTFE, PEEK, or specially UV-stabilized plastics are recommended.