S-91280A223 M5 x 8 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
• High tensile strength of 110,000 psi ensures reliable, vibration-resistant fastening for critical applications
• Class 8.8 strength grade provides dependable performance under high mechanical stress and load conditions
• Fully threaded coarse pitch design enables faster installation and improved grip in various materials
• Precision Class 6h thread fit guarantees consistent engagement and reduces cross-threading risks
• External hex drive with 8mm head width offers secure tool engagement for high-torque applications
• Compliance with ISO 4017, DIN 933, and ISO 898 standards ensures international quality and interchangeability

Professional Applications & Engineering Value

These M5 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and zinc plating finish, specifically designed to address common industrial challenges. The fully threaded metric coarse pitch configuration (0.8mm pitch) provides superior holding power in machinery assembly, automotive components, and structural frameworks where vibration resistance is critical. The external hex drive design accommodates standard tools for efficient installation in confined spaces, while the Rockwell C21 hardness maintains thread integrity during repeated disassembly. Ideal for manufacturing equipment, electrical enclosures, and heavy-duty fixtures, these industrial screws prevent loosening under dynamic loads, reducing maintenance downtime and ensuring long-term operational reliability.

Specification Summary & Compliance

This M5 x 0.8mm hex head screw features precision Class 6h thread fit according to ISO metric standards, ensuring dimensional accuracy and compatibility. Manufacturing complies with ISO 4017, DIN 933, and ISO 898 specifications for mechanical properties and dimensional requirements. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substances. With 8mm length and right-hand thread direction, these fasteners maintain consistent performance across industrial applications requiring metric coarse thread components.