S-91280A085 M8 x 30 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Class 8.8 strength rating and 110,000 psi tensile strength for reliable performance in demanding applications
• Enhanced corrosion resistance through black oxide surface treatment that provides durable protection in industrial environments
• Optimal thread engagement with coarse 1.25mm pitch and Class 6g fit ensuring secure fastening and vibration resistance
• Easy installation and removal thanks to the external hex drive design that accommodates standard wrenches and tools
• Full-threaded design provides maximum grip length and uniform stress distribution along the entire fastener
• Consistent dimensional accuracy meeting ISO 4017 DIN 933 specifications for reliable interchangeability
• Environmental compliance with RoHS 3 and REACH regulations for safe use across various industries

Professional Applications & Engineering Value

These M8 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and precise metric coarse threading. The combination of 110,000 psi tensile strength and Rockwell C21 hardness ensures they withstand heavy loads and repetitive stress in industrial machinery, construction frameworks, and equipment assembly. The fully threaded design with 1.25mm coarse pitch provides superior resistance to vibration loosening, while the black oxide finish offers enhanced corrosion protection in challenging environments. These external hex drive fasteners are engineered to solve common industrial challenges including joint integrity, maintenance accessibility, and long-term durability requirements across manufacturing, automotive, and structural applications.

Specification Summary & Compliance

This M8 x 1.25 x 30mm hex head screw features precise Class 6g thread fit tolerance and right-hand metric coarse threading manufactured to ISO 4017 DIN 933 standards. The fastener maintains dimensional accuracy with 13mm head width and 5.4mm head height specifications. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors while meeting international quality and performance benchmarks for steel fasteners in professional applications.