S-91280A544 M8 x 45 mm ISO 4017, DIN 933, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
- High tensile strength (110,000 PSI) and Class 8.8 rating for reliable performance in heavy-duty applications
- Precise Class 6h thread fit ensures smooth installation and secure fastening with minimal play
- Fully threaded M8 coarse pitch (1.25mm) design provides maximum grip and load distribution
- External hex drive and hex head allow for easy installation with standard tools and high torque application
- Compliance with ISO 4017, DIN 933, and SAE J1199 guarantees consistent quality and international interoperability
- RoHS 3 and REACH compliant for environmentally responsible and safe usage in regulated industries
Professional Applications & Engineering Value
This M8 hex head screw delivers exceptional engineering value in demanding industrial settings where fastener failure is not an option. The Class 8.8 steel construction provides a robust solution for machinery assembly, structural frameworks, and automotive components, offering reliable clamping force under high vibration and dynamic loads. The zinc plated finish effectively combats oxidation and chemical exposure, making it ideal for outdoor equipment, manufacturing plants, and marine applications. With its fully threaded metric coarse design and external hex drive, it ensures rapid installation and consistent performance in automated production lines. Engineers specify this fastener for critical joints in construction, heavy equipment, and transportation systems where ISO 4017/DIN 933 compliance and predictable mechanical behavior are paramount.
Specification Summary & Compliance
This hex head screw features M8 x 1.25mm coarse threads with Class 6h thread fit tolerance per metric standards, ensuring precise engagement. It is manufactured to meet ISO 4017, DIN 933, and SAE J1199 dimensional and mechanical specifications, providing a tensile strength of 110,000 PSI and Rockwell C21 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial markets.
