S-91280A278 M6 x 90 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Durability: Class 8.8 steel construction with 110,000 psi tensile strength ensures reliable performance in demanding industrial environments.
• Superior Corrosion Resistance: Black steel material provides enhanced protection against rust and wear, extending service life.
• Optimized Thread Design: M6 coarse thread with 1 mm pitch and Class 6g fit offers quick assembly and secure fastening with reduced cross-threading risk.
• Versatile Fastening Solution: Partially threaded design with 18 mm minimum thread length allows flexibility for both threaded and unthreaded applications.
• Easy Installation & Maintenance: External hex head with 10 mm width enables standard wrench access for straightforward tightening and removal.
• International Standard Compliance: ISO 4014 (DIN 931) certification guarantees dimensional accuracy and interchangeability across global projects.
• Environmental Responsibility: RoHS 3 and REACH compliance ensures safe usage without hazardous substances, meeting modern regulatory requirements.

Professional Applications & Engineering Value

Engineered for industrial machinery, structural frameworks, and equipment assembly, these M6 hex head screws deliver critical reliability where vibration resistance and load-bearing capacity are paramount. The Class 8.8 steel composition provides consistent high tensile strength (110,000 psi) and Rockwell C21 hardness, preventing deformation under stress. The partially threaded configuration with coarse metric threading ensures optimal grip in both metallic and composite materials, reducing loosening in dynamic applications. Black surface treatment enhances corrosion protection in humid or outdoor settings, while the external hex drive facilitates efficient installation with common tools, minimizing assembly time and maintenance costs in manufacturing, automotive, and construction sectors.

Specification Summary & Compliance

This M6 x 1 mm metric screw maintains precise Class 6g thread fit and ISO 4014 (DIN 931) dimensional standards, ensuring consistent performance across batches. Manufacturing adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, verifying absence of restricted substances. The 90 mm length with 18 mm minimum thread length provides versatile application coverage, backed by documented Class 8.8 mechanical properties for quality assurance in technical procurement.