S-91310A543 M8 x 50 mm ISO 4017, DIN 933 High-Strength Metric Class 10.9 Steel Hex Head Screws
High-Strength Metric Class 10.9 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
- Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress industrial applications
- Superior wear resistance thanks to Rockwell C32 hardness, ensuring extended service life in demanding environments
- Maximum grip and holding power through fully threaded design that distributes stress evenly along the entire bolt length
- Precise installation and removal with external hex drive and standard 13mm head width for common tool compatibility
- Consistent thread engagement with Class 6g tolerance metric coarse threads that resist vibration loosening
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
- Global interoperability through ISO 4017 (DIN 933) certification ensuring compatibility with international equipment
Professional Applications & Engineering Value
These Class 10.9 steel hex head screws deliver critical reliability for heavy machinery assembly, structural steel connections, and industrial equipment manufacturing. The M8 coarse thread with 1.25mm pitch provides excellent resistance to vibration-induced loosening while maintaining rapid installation times. The fully threaded metric bolt design ensures maximum thread engagement throughout the entire 50mm length, distributing clamp load evenly to prevent joint failure. Engineered with Rockwell C32 hardness, these fasteners withstand extreme mechanical stress and environmental exposure in construction, automotive, and manufacturing applications where high tensile strength and dimensional precision are non-negotiable requirements.
Specification Summary & Compliance
This M8 x 1.25 x 50mm hex head screw features Class 6g thread fit tolerance with right-hand metric coarse threading. Manufactured to ISO 4017 (DIN 933) specifications with external hex drive and standardized head dimensions (13mm width, 5.3mm height). The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets while maintaining the mechanical properties required for Class 10.9 strength grade applications.
