S-91280A881 M20 x 30 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 of 110,000 psi ensures reliable performance in heavy-duty applications
- Class 8.8 strength grade provides excellent load-bearing capacity for structural and machinery assemblies
- Rockwell C21 hardness offers enhanced durability and resistance to deformation under stress
- M20 coarse thread design enables faster installation and better vibration resistance in construction applications
- Fully threaded shank delivers maximum grip length and uniform clamping force distribution
- External hex drive compatibility allows for standard tooling and efficient installation procedures
Professional Applications & Engineering Value
These M20 hex head screws are engineered to address critical challenges in industrial fastening applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with zinc plating creates a robust fastener that withstands corrosive environments while maintaining 110,000 psi tensile strength. The coarse thread pitch of 2.5mm ensures rapid assembly in construction, machinery, and heavy equipment applications, reducing installation time while providing superior holding power. The fully threaded design offers consistent engagement throughout the fastener length, making them ideal for applications requiring maximum thread contact and uniform stress distribution across joined components.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerance with right-hand metric coarse threading, these screws ensure consistent performance and interchangeability. Compliance with ISO 4017, DIN 933, and SAE J1199 standards guarantees dimensional accuracy and mechanical properties. The fasteners are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
