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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, 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 – 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, 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 high-performance materials such as PA (nylon), PP, PE, POM, PEEK, PTFE, and rigid PVC.
Explore the Bülte Plastic Screws CollectionTo ensure dimensional accuracy, interchangeability, and secure fastening, 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 chesse head screws.
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 drive types for plastic screws are diverse and mirror the classic variations of metal screws.
Slotted
A simple drive where a slot is located in the screw head, operated with a flathead screwdriver.
Phillips
This variant offers better guidance for the screwdriver and reduces the risk of slipping
Allen
Very precise and ideal for applications where space for the drive is limited.
6-Lobe / Torx
Thanks to their 6-point star-shaped (internal hexalobular) drive, these plastic screws ensure optimal torque transmission while minimizing wear.
Pozidriv
Pozidriv is an enhanced version of the Phillips drive, designed to allow even greater torque transmission.
Coin slot
Screws can be easily installed and removed using a coin or a flat-head screwdriver.
Plastic Screws with Fine Thread
In applications where high precision, controlled preload and secure connections are important, fine thread plastic screws are the first choice. Thanks to their lower thread pitch, they offer precise adjustment options and better force distribution than standard threads.
Plastic 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 NowPlastic Screws with Washer - Flange Screws
Washer head 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 plastic 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 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 screws in other thread sizes and dimensions.
FAQ Plastic Screws
What do the designations S16, S17, S18, etc. mean for screws?
"S" refers to the width across flats of hexagon screws. S19 therefore means that the screw has a hexagon head that is tightened with a 19 mm wrench.
Where can plastic screws with fine thread be purchased?
One supplier of plastic screws with fine thread is Bülte. The range includes hexagon screws DIN 933 with fine thread as well as cylindrical screws DIN 84 and flat head screws DIN 85. Here you will find an overview of the standard available fine thread plastic screws. Other sizes and screw types are available on request.
What distinguishes Bülte from a conventional screw wholesaler or fastener retailer?
Bülte is not a normal screw wholesaler or retailer. The company develops its own fasteners, including screws, nuts, washers, spacers and bushings. While traditional screw retailers mainly sell standard metal screws from various manufacturers, Bülte specialises in plastic fasteners and sees itself as a partner to industry. Plastic screws and related products are sold to industrial customers worldwide. In addition, customised screws and other fasteners are produced according to drawings. Bülte supports its customers from product selection and development to the production of tailor-made screws.
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.