S-91290A193 M4 x 50 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Strength & Durability: Class 12.9 rating and 170,000 PSI tensile strength ensure reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Superior Corrosion Resistance: Black-oxide coating on alloy steel provides enhanced protection against rust and wear, extending service life in harsh industrial environments.
• Precision Fit & Easy Installation: Class 5g6g thread fit and standard hex socket drive (3mm) allow for accurate, secure tightening with standard tools, minimizing assembly time.
• High Load-Bearing Capacity: Rockwell C37 hardness and fully threaded M4x0.7mm coarse thread design offer excellent vibration resistance and uniform stress distribution.
• Global Standard Compliance: Manufactured to DIN 912/ISO 4762 specifications, ensuring interchangeability and reliability in international engineering projects.
• Environmental & Regulatory Safety: RoHS 3 and REACH compliance guarantees that these screws meet strict environmental standards, suitable for eco-conscious industries.
• Versatile Fastening Solution: Right-hand coarse threads and 50mm length make them ideal for a wide range of applications, from machinery to automotive assemblies.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these M4 socket head cap screws combine black-oxide alloy steel with a Class 12.9 strength rating to address critical challenges like vibration loosening and high tensile loads. The fully threaded coarse pitch (0.7mm) design ensures maximum grip and fatigue resistance, while the hex socket drive facilitates precise torque application in confined spaces. Commonly used in heavy machinery, automotive systems, and precision equipment, these screws deliver long-term reliability by minimizing corrosion and maintaining thread integrity under dynamic stresses, backed by DIN 912/ISO 4762 standards for consistent quality.

Specification Summary & Compliance

This product adheres to precise metric thread specifications with a Class 5g6g tolerance for accurate fit. It meets DIN 912 (identical to ISO 4762) manufacturing standards, ensuring dimensional consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, making it suitable for global industrial use where safety and environmental standards are prioritized.