S-91280A777 M14 x 25 mm ISO 4017, DIN 933, 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
- Exceptional load-bearing capacity with 110,000 psi tensile strength and Class 8.8 rating for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
- Optimized installation efficiency through external hex drive design and coarse M14x2mm threading for faster assembly
- Consistent mechanical properties with Rockwell C21 hardness ensuring dimensional stability under stress
- Full-thread engagement along the entire 25mm length for maximum grip and distribution of clamping forces
- Precision manufacturing to Class 6h thread fit standards, guaranteeing secure fastening and vibration resistance
- Regulatory compliance assurance meeting ISO 4017, DIN 933, RoHS 3, and REACH standards for global project acceptance
Professional Applications & Engineering Value
These M14 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where fastener failure is not an option. The Class 8.8 steel construction provides the necessary structural integrity for machinery assembly, construction frameworks, and equipment manufacturing, while the zinc plating offers essential protection against environmental degradation. The coarse metric threading (M14x2mm) ensures rapid installation and superior resistance to vibrational loosening in dynamic load conditions. With full threading along the entire 25mm length, these fasteners maximize surface contact for enhanced load distribution, making them ideal for applications requiring consistent clamping force across joined components.
Specification Summary & Compliance
Manufactured to ISO 4017 and DIN 933 standards with Class 6h thread fit precision. These metric hex head screws feature M14x2mm coarse threading, 25mm length, and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The Class 8.8 strength grade corresponds to 110,000 psi tensile strength and Rockwell C21 hardness specifications.
