S-91280A292 M8 x 140 mm ISO 4014, DIN 931 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
- Exceptional load-bearing capacity with 110,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance from black steel construction, extending service life in harsh industrial environments
- Optimized torque transmission through external hex drive and 13mm head width for secure installation
- Precision thread engagement with Class 6g fit and coarse 1.25mm pitch ensuring vibration-resistant connections
- Enhanced structural integrity from Rockwell C21 hardness, maintaining dimensional stability under stress
- Versatile partial threading (28mm min) allowing both clamping and alignment functions in assembly
- Global compliance assurance meeting international ISO 4014 standards for consistent quality and interchangeability
Professional Applications & Engineering Value
This M8 hex head screw delivers critical engineering solutions for industrial assembly challenges. The Class 8.8 steel construction provides optimal strength-to-weight ratio, while the coarse thread design with 1.25mm pitch prevents cross-threading during high-volume installation. The partially threaded configuration offers dual functionality: the threaded section secures components with 28mm minimum engagement, while the smooth shank maintains alignment in clearance holes. The external hex drive enables high-torque installation with standard tools, making it ideal for machinery, structural steel connections, and heavy equipment manufacturing where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
Manufactured to ISO 4014 (DIN 931) specifications with Class 6g thread tolerance ensuring precise fit. The metric coarse thread (M8 x 1.25mm) follows standardized dimensions for global compatibility. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety. The Class 8.8 strength rating and Rockwell C21 hardness verify mechanical performance meets international fastener standards for industrial applications.
