S-91280A285 M8 x 75 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 8.8 steel construction providing reliable performance in demanding environments
• Superior load-bearing capacity thanks to 110,000 psi tensile strength and Rockwell C21 hardness rating
• Optimized thread engagement through partially threaded design with 22mm minimum thread length for secure fastening
• Easy installation and removal with standard external hex drive and 13mm head width for common tool compatibility
• Reliable metric performance with M8 coarse thread (1.25mm pitch) ensuring proper fit and vibration resistance
• Industry-standard compliance meeting ISO 4014 specifications for consistent quality and interchangeability
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance for sustainable operations

Professional Applications & Engineering Value

This M8 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and ISO 4014 compliance, making it ideal for structural applications requiring reliable fastening under stress. The partially threaded design with 22mm minimum thread length provides optimal clamp load distribution while preventing thread damage during assembly. The coarse metric thread (M8x1.25) ensures rapid installation and superior vibration resistance in machinery, equipment frames, and structural steel connections. The external hex drive with 13mm head width accommodates standard tools for efficient maintenance in industrial settings, while the black finish offers basic corrosion protection for indoor applications. This fastener solves critical engineering challenges by combining high tensile strength (110,000 psi) with precise Class 6g thread fit for consistent performance in manufacturing, construction, and heavy equipment applications.

Specification Summary & Compliance

This hex head screw features precise Class 6g thread fit according to ISO metric standards, ensuring proper engagement and load distribution. The fastener maintains dimensional accuracy per ISO 4014 specifications (equivalent to DIN 931) with M8x1.25 coarse threading and 75mm overall length. Manufacturing compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and chemical safety. The Class 8.8 strength rating guarantees consistent mechanical properties, supported by Rockwell C21 hardness testing, for reliable performance in industrial fastening applications requiring standardized metric components.