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Thumb Screws Male – PlastometMetal Screws with Plastic Overmoulding
What Are the Advantages of Plastic Screws?
When lightweight, corrosion-resistant, and electrically insulating fastening solutions are required, plastic screws are a proven alternative to traditional metal screws. They are widely used in applications that demand precise and reliable fastening without the disadvantages of metallic materials, such as rust, conductivity, or excessive weight. Here are the key advantages of using plastic fasteners over metal alternatives:
Weight Reduction
Plastic screws are significantly lighter than metal screws, making them an ideal solution for applications where weight reduction is essential, such as in the aerospace and automotive industries. Their low weight also simplifies transportation, handling, and storage.
Electrical Insulation
Plastic is a highly effective electrical insulator. Plastic screws are therefore commonly used in electrical and electronic applications where reliable insulation is required to prevent short circuits and electromagnetic interference.
Strength and Temperature Resistance
Modern plastic screws offer excellent mechanical strength and can withstand demanding operating conditions, including low temperatures. Depending on the material, high-performance plastic screws made from PTFE (Teflon), PEEK, or PVDF can also resist temperatures above 100°C. Reinforced plastics with glass fibers provide even greater strength and durability.
Corrosion and Chemical Resistance
Unlike metal fasteners, plastic screws do not rust or oxidize. Depending on the selected material, they also offer excellent resistance to many corrosive chemicals, making them suitable for harsh environments and chemical applications.
Vibration and Noise Reduction
Plastic materials naturally absorb vibration and reduce noise caused by friction, making plastic screws an excellent choice for applications requiring quieter operation and improved vibration damping.
Low-Friction Performance
Many engineering plastics feature naturally low-friction properties, helping to reduce wear in moving assemblies, improve operational efficiency, and extend the service life of components.
Design Flexibility
Plastic screws can be manufactured in a wide variety of shapes, head types, thread designs, and sizes, offering maximum flexibility for application-specific requirements and custom projects.
Fast Production
Plastic screws are primarily manufactured using the injection molding process. This production method enables the precise, fast, and cost-effective manufacturing of large quantities while maintaining consistently high quality.
Recyclability
Many plastics used in the production of fasteners are recyclable. This allows plastic screws to support more resource-efficient and sustainable manufacturing processes while reducing material waste.
All these properties make Bülte plastic screws especially popular in industry and construction, as well as in the medical sector, food industry, automotive industry, aerospace industry, and furniture manufacturing. They are also highly valued by many tradespeople such as electricians, plumbers, and carpenters who rely on quality screws Made in Germany and the reliability of Bülte fastening solutions.
Plastic Screws Made from Nylon, PVC, PTFE, PEEK and Other Materials
Nylon Screws (Polyamide, PA)
Nylon screws, also known as polyamide (PA) screws, are characterized by their high strength, good wear resistance and excellent electrical insulation properties. Injection-molded nylon screws are widely used in mechanical engineering, electrical applications and wherever corrosion-free fastening solutions are required.
PVC Screws
PVC screws provide good resistance to many chemicals and offer excellent electrical insulation properties. They are frequently used in the electrical industry, plant engineering and corrosive environments.
Polycarbonate Screws (PC)
Polycarbonate screws combine high impact resistance and dimensional stability. Transparent plastic screws made from polycarbonate are particularly suitable for visible applications, housings and technical components with demanding aesthetic and mechanical requirements.
PEEK Screws
PEEK screws are among the highest-performance plastic screws available. They offer exceptional strength, high temperature resistance and excellent chemical resistance, making them suitable for aerospace, medical technology and demanding industrial applications.
PTFE Screws (Teflon)
PTFE screws offer outstanding chemical resistance, very low friction and excellent temperature resistance. Teflon screws are ideal for applications in the chemical, pharmaceutical and food industries, as well as for use with aggressive media.
Glass-Fibre Reinforced Nylon Screws (PA-GF)
Glass-fibre reinforced nylon screws offer significantly higher strength and stiffness compared to standard nylon screws. Glass-filled nylon screws are ideal for demanding applications requiring lightweight, corrosion-resistant and mechanically durable plastic fasteners.
Polypropylene screws (PP)
Polypropylene screws are valued for their excellent chemical resistance and low weight. Injection-molded PP screws are commonly used in the chemical industry, water treatment systems and laboratory equipment where corrosion-resistant fastening elements are required.
Polyethylene Screws (PE)
Polyethylene screws are characterized by their excellent chemical resistance, low moisture absorption and good electrical insulation properties. PE screws are widely used in the chemical industry, water treatment systems and applications requiring corrosion-free plastic fasteners.
PVDF Screws
PVDF screws offer outstanding resistance to UV radiation, chemicals and weathering. These high-performance plastic screws produced by injection molding are particularly suitable for demanding applications in the chemical industry, environmental engineering and outdoor installations..
Plastic Screws – Overview
Bülte plastic screws are versatile fastening elements used in a wide range of industries. Our plastic screws are available in various plastic materials. Use the table below to get an initial overview of our extensive standard range of plastic screws.
| Types and standards | Sizes | Material | Other features / variants | Colours |
|---|---|---|---|---|
| Hex head screws ~ DIN 933 / ISO 4017 | M2—M24 | Nylon, PA-GF, PC, PP, rigid PVC, PTFE (Teflon), PEEK (others on request) | fully threaded, fine thread; slotted | natural, white, black, grey, transparent |
| Hex head screws ~ DIN 931 | M3—M12 | Nylon, PP (others on request) | partially threaded | natural, black |
| Washer-faced hex head screws | M4—M12 | Nylon (others on request) | fully threaded, slotted or 6-lobe drive | natural |
| Self-locking hex head screws Plastilockscrew® | M5—M12 | Nylon (others on request) | screw similar to DIN 933 / ISO 4017 with conical tip, thread locking | natural |
| Countersunk screws ~ DIN 963 / ISO 2009, DIN 964, DIN 965 and DIN 7991 | M3—M12 | Nylon (others on request) | slotted, Phillips or hex socket; raised countersunk head | natural |
| Hex socket head screws ~ DIN 912 / ISO 4762 with hex socket | M3—M20 | Nylon, PEEK (others on request) | also available as a washer-faced screw | natural |
| Pan head screws ~ DIN 964 with countersunk head or ISO 7380 | M3—M12 | Nylon (others on request) | slotted or 6-lobe drive | natural |
| Carriage bolts ~ DIN 603 | M5—M12 | Nylon (others on request) | round head bolt with square neck | natural |
| Screws with coin slot | M4—M12 | Nylon (others on request) | large flat head | natural |
| Flat head screws | M4—M12 | Nylon (others on request) | cylindrical with slot or round head with Phillips recess (NFE 25-129) | natural |
Are you looking for a plastic screw in a different size or made from another material?
Please contact us! We will also be happy to advise you on custom solutions according to drawings by phone at +49 2591 9194-0 or by email at info@bulte.com.
Plastic Screws with M2 to M24 Threads
Reliable, lightweight, and corrosion-resistant
At Bülte, plastic screws are available in common metric thread sizes from M2 to M24 with hex head, pan head, countersunk head or cheese head, covering a wide range of applications – from precision engineering to robust industrial assemblies.
Plastic screws provide a reliable, lightweight, and corrosion-resistant fastening solution and are widely used in mechanical engineering, electrical engineering, medical technology, as well as in the automotive and chemical industries. Depending on the application requirements, our plastic screws are manufactured from nylon (PA), PP, POM, PVDF and rigid PVC, or high-performance materials such as PEEK and PTFE (Teflon).
Explore the Bülte Plastic Screws CollectionTo ensure interchangeability and dimensional accuracy, Bülte plastic screws are manufactured according to common DIN and ISO standards such as DIN 933 / ISO 4017 hex head screws, DIN 912 / ISO 4762 hex socket head screws or DIN 84 / ISO 1207 cheese head screws, and thus ensure a perfect fit.
At Bülte, you will find not only plastic screws in various thread sizes and with different drive types, but also matching
Drive Options for Plastic Screws
The various drive types available for plastic screws correspond to the most common drive systems used for metal fasteners, providing reliable installation and compatibility across a wide range of applications.
Slotted Screws
Slotted plastic screws feature a single slot in the screw head and are designed for use with a flat-head screwdriver.
Phillips Screws
Phillips screws (PH), also known as cross-head screws, provide improved screwdriver guidance and help reduce the risk of slipping during installation.
Allen Screws (Hex Socket)
Allen Screws, or hex socket screws, allow precise tightening and are ideal for applications with limited installation space.
Torx Screws (6-Lobe)
Torx screws, also known as 6-lobe screws, feature a six-point star-shaped drive that ensures optimal torque transmission while minimizing tool wear.
Pozidriv Screws (PZ)
Pozidriv screws (PZ) are an enhanced version of the Phillips drive and are designed to provide even greater torque transmission and improved installation performance.
Coin Slot Screws
Coin Slot Screws can be easily installed and removed using a coin or a flat-head screwdriver, making them ideal for applications requiring quick access and tool-free adjustment.
Our product range includes a wide variety of plastic screw drive types and screw head styles to meet diverse fastening requirements. In addition to standard options such as hex head screws, hex socket screws, slotted screws, Phillips screws, Pozidriv screws, and 6-lobe screws, Bülte also offers wing screws and knurled screws designed for easy hand tightening without tools. Furthermore, we have developed innovative screw heads that combine multiple drive systems, providing enhanced flexibility and compatibility during assembly.
Nylon Screws with Fine Thread
In applications where high precision, controlled preload and secure connections are important, fine thread nylon screws are the first choice. Thanks to their lower thread pitch, they offer precise adjustment options and better force distribution than standard threads.
Nylon screws with fine threads also offer advantages in thin-walled components and small assemblies with limited space, as well as in screw connections that are exposed to high vibration loads. Typical areas of application are electrical engineering, electronics, precision engineering and lightweight construction.
We are happy to offer fine-thread screws made from other plastics or in other sizes on request.
Custom Plastic Screws Made to Drawing
All our plastic screws are available in a wide range of thread diameters, lengths, and materials to meet the specific requirements of your applications. We are also happy to support fully custom projects and develop the right plastic screws, plastic washers, plastic spacers or nylon dowel pins for your assembly.
In our online catalogue, you can conveniently browse our complete range of plastic screws, plastic parts, and fastening elements, filter products by head type, length, diameter, material, and more, and request a quotation online. Our expert team will gladly advise you on selecting the right plastic screws and fastening elements for your application or provide you with samples.
Contact Us NowNylon Screws with Washer - Flange Screws
Washer head plastic screws for efficient assembly
Bülte plastic screws with integrated washer or flange, also known as washer head screws or flange screws, combine a high-quality plastic or nylon screw with a washer or flange that is permanently connected to the screw. As an efficient alternative to pre-assembled screws, these fastening solutions simplify handling, reduce assembly time, and eliminate the risk of missing or incorrectly positioned washers during installation.
Thanks to their defined bearing surface, these nylon screws with washer ensure optimized load distribution and help protect the component surface. Users also benefit from the material-specific advantages of these nylon fasteners: they are lightweight, durable, electrically insulating, and corrosion-resistant, making them ideal for a wide range of industrial applications.
At Bülte, you will find high-quality flange head nylon screws with different drive types and head styles, including:
- Hex flange nylon screws M4–M12, available with different washer diameters and hex head heights
- Hex socket nylon screws with washer M6–M12
- Knurled washer face thumb screws M4–M6 made of nylon, additional slotted drive
- Wing screws with washer – see also Wing Screw Type A and Wing Screw Type D
Upon request, we also offer flange nylon screws in other thread sizes and dimensions.
Frequently Asked Questions About Plastic Screws
Which plastics are used to manufacture plastic screws?
Plastic screws are commonly manufactured from PA (Nylon), PP, PE, POM, PVC, PTFE (Teflon), PVDF and PEEK. Depending on the material, plastic fasteners offer different levels of strength, temperature resistance, chemical resistance and electrical insulation.
Can plastic screws be manufactured to custom specifications?
Yes, plastic screws can be manufactured according to customer drawings and specifications. Custom dimensions, thread sizes, head styles, materials and colours are available for application-specific requirements.
Which plastic screws are suitable for electrical applications?
Plastic screws are ideal for electrical and electronic applications because they are electrically insulating and non-conductive. They help prevent short circuits, electrical interference and galvanic corrosion.
Which plastic screws offer high chemical resistance?
Plastic screws made from PTFE (Teflon), PVDF and PEEK offer excellent chemical resistance. These materials are suitable for applications involving acids, alkalis, solvents and other aggressive chemicals.
Are plastic screws UV resistant?
The UV resistance of plastic screws depends on the material. PVDF, PEEK and PTFE (Teflon) provide excellent UV resistance, while PA and PP generally require UV stabilizers for long-term outdoor use.
What do designations such as S16, S17 or S18 mean for plastic screws?
The designation "S" refers to the wrench size of a hex head screw. For example, an S19 plastic screw is designed to be tightened with a 19 mm wrench.
Are plastic screws strong enough for industrial applications?
Plastic screws provide sufficient strength for many industrial applications involving moderate loads. For highly loaded or safety-critical connections, metal screws are generally recommended.
Are plastic screws available with fine threads?
Yes, plastic screws with fine threads are available. They are particularly suitable for precision applications and assemblies that require improved vibration resistance. An overview of available plastic screws with fine threads can be found here.
Other Fasteners from the Bülte Range
Bülte also offers matching nuts and washers in various designs, thread sizes and standards for the respective plastic screws, as well as other fasteners and technical plastic parts for a wide range of industrial applications.