S-95942A115 M4 x 8 mm Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments.
• Superior mechanical strength with 80,000 PSI tensile strength and Rockwell B85 hardness for reliable, long-lasting performance.
• Secure and efficient installation via a 2.5 mm hex drive, providing excellent torque transfer and reducing the risk of stripping.
• Reliable left-hand threading designed for specific applications where reverse rotation is required to prevent loosening.
• Precise Class 6g thread fit ensures consistent engagement and smooth assembly in metric coarse thread applications.
• Fully threaded design offers maximum grip and holding power along the entire 8 mm length.
• Compliant with major regulations including RoHS 3 and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M4 left-hand metric hex button head screw is engineered to address critical challenges in machinery and equipment where standard right-hand threads may loosen under specific rotational forces. The 18-8 stainless steel provides excellent resistance to rust and corrosion, making it suitable for demanding environments such as automotive assemblies, conveyor systems, and outdoor machinery. Its coarse thread pitch of 0.7 mm and Class 6g thread fit ensure quick assembly and reliable performance, even in high-vibration settings. The rounded button head with a hex drive offers a low-profile, secure fastening solution that minimizes protrusion and enhances safety. This screw is ideal for applications requiring left-hand threaded fasteners to maintain tension in rotating components, providing a dependable and durable connection that reduces maintenance needs and downtime.

Specification Summary & Compliance

This screw adheres to metric thread standards with an M4 x 0.7 mm coarse thread and a Class 6g thread fit for precise dimensional accuracy. It is manufactured from 18-8 stainless steel, fully threaded, and features a rounded button head with a 2.5 mm hex drive. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and meets international environmental and safety standards.