S-91280A348 M6 x 55 mm ISO 4014, DIN 931, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced Durability: Zinc plating provides excellent corrosion resistance, extending service life in harsh industrial environments.
• High Tensile Strength: Class 8.8 steel construction with 110,000 psi tensile strength ensures reliable performance under heavy loads and stress.
• Precision Threading: Class 6h thread fit and M6x1 mm coarse thread design offer secure, vibration-resistant connections with easy installation.
• Optimized Drive Efficiency: External hex drive and 10 mm head width allow for high torque application and quick assembly with standard tools.
• Versatile Partial Threading: 18 mm minimum thread length on a 55 mm shank provides flexibility for applications requiring both clamped and unthreaded sections.
• Material Hardness: Rockwell C21 hardness ensures high wear resistance and maintains thread integrity during repeated use.
• Global Compliance: Meets ISO 4014, DIN 931, and SAE J1199 standards, ensuring interchangeability and reliability in international projects.

Professional Applications & Engineering Value

This M6 hex head screw is engineered to address critical challenges in industrial assembly and machinery. The Class 8.8 steel material and 110,000 psi tensile strength provide exceptional load-bearing capacity, preventing failure in high-stress applications such as automotive frames, construction equipment, and heavy machinery. The zinc-plated finish combats corrosion in outdoor or humid environments, reducing maintenance costs and downtime. With a coarse thread pitch of 1 mm and partial threading, it ensures rapid installation and secure fastening in materials where full threading is unnecessary, optimizing both time and material use. Compliance with ISO 4014 and DIN 931 standards guarantees consistent quality and compatibility, making it a trusted choice for engineers requiring reliable metric fasteners.

Specification Summary & Compliance

This fastener features precise Class 6h thread fit per ISO metric standards, ensuring dimensional accuracy for secure assemblies. It is manufactured in accordance with ISO 4014, DIN 931, and SAE J1199 specifications, providing reliable performance in mechanical applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global supply chains.