S-91280A550 M8 x 60 mm ISO 4014, DIN 931, 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 tensile strength with Class 8.8 rating (110,000 psi) ensures reliable performance in demanding applications
- Enhanced corrosion resistance through zinc plating extends service life in various environmental conditions
- Optimized partial threading provides superior grip and clamping force while reducing material usage
- Precise metric threading (M8 x 1.25mm coarse) ensures compatibility with standard metric components
- External hex drive design allows for high-torque installation with common tools
- Right-hand thread orientation facilitates standard installation procedures
- Multiple international certifications guarantee quality and regulatory compliance
Professional Applications & Engineering Value
This M8 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and zinc plated finish, specifically designed to address industrial fastening challenges. The partially threaded design concentrates strength where needed most, preventing thread damage during installation while maintaining structural integrity. The coarse metric threading (1.25mm pitch) ensures quick assembly and disassembly in maintenance-heavy environments, while the external hex drive accommodates high-torque applications without stripping. Ideal for machinery, equipment assembly, and structural frameworks, this fastener provides reliable performance in automotive, manufacturing, and construction sectors where high tensile strength and corrosion resistance are critical for long-term reliability.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerances with 60mm length and 22mm minimum thread length. Complies with international standards including ISO 4014, DIN 931, and SAE J1199. Meets regulatory requirements for RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. The Rockwell C21 hardness rating ensures consistent performance under mechanical stress while maintaining the specified 110,000 psi tensile strength.
