S-90379A106 M8 x 35 mm JIS B 1180 JIS Medium-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments
• High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
• Class 8.8 strength grade provides dependable mechanical properties for critical fastening applications
• Rockwell C21 hardness offers excellent wear resistance and durability
• Coarse 1.25mm pitch threading enables quick installation and reduced cross-threading risks
• External hex drive design allows for high torque application with standard tools
• Full threading along 35mm length maximizes grip and load distribution across the entire fastener

Professional Applications & Engineering Value

These M8 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and zinc yellow-chromate plating, specifically designed to address common industrial challenges. The combination of 110,000 psi tensile strength and Rockwell C21 hardness ensures reliable performance in heavy machinery, structural assemblies, and equipment manufacturing where vibration resistance and load-bearing capacity are critical. The metric coarse thread with 1.25mm pitch facilitates rapid assembly while minimizing installation errors, while the external hex drive accommodates high-torque applications with standard tools. These fully threaded fasteners provide uniform stress distribution across the entire 35mm length, making them ideal for demanding applications in construction, automotive, and industrial equipment where consistent clamping force and corrosion protection are essential.

Specification Summary & Compliance

These metric hex head screws feature precise M8 x 1.25mm coarse thread with Class 6g tolerance for consistent fit and performance. The fasteners are manufactured to meet JIS B 1180 specifications and comply with industry standards for dimensional accuracy and mechanical properties. The 35mm length and fully threaded design ensure proper engagement in various material thicknesses. The zinc yellow-chromate plating provides environmental protection while maintaining compliance with industrial surface treatment requirements for corrosion resistance.