Product Name
Leister 100.270 THREAD FORMING SCREW M3 X 6
Brief Description
The Leister 100.270 Thread Forming Screw M3 x 6 is a specialized fastener designed to create its own mating threads in a pre-drilled or punched pilot hole by displacing and compressing the material, rather than cutting it. This self-forming action eliminates the need for pre-tapping and results in a secure, vibration-resistant joint. As a Leister branded product, it is often used as a replacement part or accessory within Leister's extensive range of hot air tools and plastic welding equipment.
Popular Applications & Uses
- Assembling plastic components in electronic enclosures and automotive parts.- Fastening in thin sheet metal applications, such as HVAC systems and ductwork.- Securing parts in various general manufacturing assemblies where a strong, vibration-resistant connection is crucial.- Used in household appliances for securing plastic parts.- Fastening components in plastic welding and process heat equipment, consistent with Leister's product ecosystem.- Applications requiring secure fastening in wood, plastic, or sheet metal materials without existing threads.
Industries that Commonly Use It
- **General Manufacturing:** For a wide array of product assembly needs.- **Plastic Fabrication:** Ideal for creating strong, reliable fixings in thermoplastic materials.- **Automotive Service/Repair:** Used in the assembly of automotive components.- **Construction/Building Services:** As a component in tools or assemblies for roofing, flooring, and civil engineering applications where Leister products are utilized.- **LED/Electronics:** For securing components in electronic enclosures, circuit boards, and cable management systems.- **Metal Fabrication:** Suitable for fastening in sheet metal and ductile metals like aluminum, brass, and zinc.- **Distributers & Resellers:** Companies like Perigee Direct distribute these fasteners as replacement parts and industrial supplies.
Special and Unique Features
- **Thread-Forming Action:** Creates its own threads by displacing material, eliminating the need for pre-tapped holes and reducing assembly steps.- **Vibration Resistance:** Forms a tight, play-free fit with the mating threads, providing excellent resistance to loosening from vibration.- **No Chip Generation:** Unlike thread-cutting screws, it compresses material rather than removing it, preventing the creation of chips or swarf that could contaminate sensitive assemblies.- **Trilobular Shape (Common):** Many thread-forming screws, including alternatives, feature a trilobular cross-section that facilitates thread forming and provides areas of relief to prevent cracking.- **Reusable:** These screws can often be removed and replaced without stripping or damaging the formed threads.
Key Properties
- **Type:** Thread Forming Screw (also known as Thread Rolling Screw), a type of self-tapping screw.- **Size:** M3 x 6mm (Metric).- **Material Compatibility:** Primarily designed for plastics, sheet metal, and wood; also suitable for ductile metals.- **Installation:** Requires a pre-drilled pilot hole; can be driven with standard or powered screwdrivers.- **Holding Power:** Provides superior holding power compared to some other fasteners due to the intimate contact with the formed threads.- **Reduced Stress:** Designed for minimal stress and low installation torque in plastic materials.
Surface Compatibility
- **Plastics:** Excellent compatibility with various thermoplastics, engineering resins, and some thermoset plastics.- **Sheet Metal:** Highly effective in thin sheet metal applications.- **Wood:** Can be used in wooden assemblies.- **Ductile Metals:** Suitable for softer metals such as aluminum, brass, bronze, magnesium, and zinc castings. Not recommended for grey iron, malleable iron, or steel castings where thread-cutting screws are preferred.
Known backups / known substitutes
- **Plastite® Alternative Screws:** Trilobular thread-forming screws specifically designed for plastic and thermoplastic applications.- **Taptite® Alternative Screws:** Trilobular thread-rolling screws designed for ductile metals.- **EJOT® PT® Alternative Screws:** Thread-forming screws with sharp threads for easy penetration into plastic.- **Self-Tapping Screws (Thread Cutting):** While also self-tapping, these cut and remove material, potentially generating swarf and offering less vibration resistance than thread-forming screws.- **Machine Screws:** Require a pre-tapped hole or a nut for fastening, which adds complexity and parts.
Comparison Note
Thread forming screws like the Leister 100.270 offer distinct advantages over traditional machine screws and thread-cutting self-tapping screws, particularly in applications where material integrity, vibration resistance, and assembly efficiency are critical. They eliminate the need for costly tapping operations and secondary locking elements, providing a stronger, play-free joint by compressing rather than removing material. While thread-cutting screws remove material and can generate chips, thread-forming screws displace it, making them ideal for sensitive environments. For optimal performance, selecting the correct point style and ensuring appropriate pilot hole dimensions for the specific material is essential.
