Designed for deep-set fastening, these M4 extended flat head screws in 304 stainless steel are perfect for switch sockets and thick wooden assemblies. The countersunk head ensures a seamless finish, while the self-tapping design allows for quick installation without pilot holes. Available in lengths from 70mm to 200mm for versatile project needs. Features and Benefits
- Extended Flat Head (Countersunk) - Enables deep, secure fastening in thick materials while maintaining a clean, flush surface.
- 304 Stainless Steel Material - Offers excellent rust resistance and durability for both indoor and general outdoor applications.
- Self-Tapping Design - Cuts its own thread into wood and soft materials, streamlining the installation process and reducing tool requirements.
- Wide Length Range (70-200mm) - Provides the perfect fastener for projects of varying material thicknesses and depth requirements. Applications
- Installing electrical switch sockets and outlet boxes securely into wooden studs or panels.
- Joining thick wooden beams, posts, or planks in furniture making and construction.
- Fastening metal brackets or hardware to wooden frames where a non-protruding head is critical.
Material: 304 Stainless Steel. Application: Switch Socket, Wood. Diameter: M4. Head Type: Extended Flat Head (Countersunk). Length Range: 70-200 mm. Product Type: Self-tapping Screw. Thread Type: Self-tapping. Head Diameter: Approx. 8mm (standard for M4 countersunk). Length Range: 70mm to 200mm. Thread Size: M4. Material: 304 Stainless Steel (A2). Application: Switch sockets, wood fixtures, electrical boxes. Corrosion Resistance: Good (resistant to atmospheric corrosion). Drive Style: Assumed Phillips (from typical design). Finish: Natural stainless steel. Head Angle: 82° or 90° countersink. Head Type: Extended Flat Head (Countersunk). Point Type: Sharp self-tapping point. Shank Type: Fully threaded. Tensile Strength: Approx. 700 MPa (A2-70). Thread Pitch: 0.7mm (standard M4 coarse pitch). Thread Type: Self-tapping (for wood/soft materials). Q: What are the exact specifications for the M4 extended flat head screws? A: These are M4 diameter self-tapping screws with a countersunk flat head. They are available in extended lengths ranging from 70mm to 200mm. The screws are manufactured from 304 stainless steel and are designed for applications requiring a deeper reach with a flush finish.. Q: What is the quality and durability of the 304 stainless steel used? A: 304 stainless steel is a widely used, general-purpose grade known for good corrosion resistance and strength. It provides reliable durability for most indoor applications and many outdoor environments, making these screws a solid choice for woodworking, switch socket installation, and furniture assembly.. Q: Are these screws compatible with standard switch sockets and wooden frames? A: Yes, these M4 countersunk screws are specifically mentioned as suitable for securing switch sockets and for use in wooden materials. Their extended length range allows them to accommodate thicker wooden frames or panels where a standard screw would be too short.. Q: Do these screws come with any product warranty? A: Warranty details depend on the seller. Customers should review the specific terms provided at the point of purchase for information covering material or manufacturing defects. Direct inquiries to the seller are recommended for clarification.. Q: Why are these extended flat head screws considered a good value? A: These screws offer value by providing long lengths in a durable 304 stainless steel construction, which are often harder to find than standard sizes. Their specific design for switch sockets and deep wood fastening makes them a cost-effective, specialized solution for electrical and carpentry projects..