S-91280A884 M20 x 45 mm ISO 4017, DIN 933, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance: Zinc plating provides excellent protection against rust and environmental degradation, extending service life in demanding conditions.
• High Tensile Strength for Demanding Applications: Class 8.8 strength grade and 110,000 psi tensile strength ensure reliable performance under high stress and load.
• Robust Hardness and Durability: Rockwell C21 hardness offers excellent resistance to wear and deformation, maintaining fastener integrity.
• Optimized for Efficient Assembly: External hex drive and fully threaded M20 x 2.5mm coarse thread design allow for quick installation and secure fastening.
• Guaranteed Dimensional Precision: Class 6h thread fit ensures consistent, accurate mating with nuts and tapped holes, reducing assembly issues.
• Comprehensive Standard Compliance: Meets ISO 4017, DIN 933, and SAE J1199 specifications, ensuring interchangeability and reliability in global applications.
• Environmentally Responsible Manufacturing: RoHS 3 and REACH compliance confirms the use of safe, regulated materials for sustainable operations.

Professional Applications & Engineering Value

This M20 hex head screw is engineered to address critical challenges in industrial fastening, where failure due to vibration, high loads, or corrosion can lead to costly downtime. The Class 8.8 steel construction and zinc plating work in tandem to provide a solution that resists shear forces and environmental exposure, making it ideal for machinery, structural frameworks, and heavy-duty equipment assembly. Its fully threaded metric coarse thread (M20 x 2.5mm) with a right-hand thread direction ensures deep engagement and high clamp load distribution, while the external hex drive facilitates easy installation with common tools, streamlining production and maintenance processes in sectors like automotive, construction, and manufacturing.

Specification Summary & Compliance

This fastener features a metric M20 x 2.5mm coarse thread with a Class 6h thread fit for precision. It is manufactured in compliance with ISO 4017, DIN 933, and SAE J1199 standards, ensuring dimensional accuracy and performance reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.