S-91280A152 M4 x 40 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
- Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
- High tensile strength of 110,000 PSI ensures reliable performance under heavy loads and vibration, reducing failure risks
- Class 8.8 strength grade provides excellent durability and load-bearing capacity for demanding applications
- Coarse 0.7mm pitch threading allows for faster assembly and better grip in softer materials, improving installation efficiency
- Fully threaded design offers consistent clamping force along the entire length for secure fastening
- External hex drive and hex head enable easy installation with standard tools, minimizing assembly time
- Rockwell C21 hardness maintains thread integrity and resistance to wear during repeated use
Professional Applications & Engineering Value
This M4 hex head screw is engineered to address critical fastening challenges in industrial settings where vibration, heavy loads, and environmental exposure are common. The Class 8.8 steel construction combined with zinc plating delivers robust corrosion resistance, making it ideal for machinery, automotive assemblies, and structural frameworks. The coarse metric thread (0.7mm pitch) ensures quick installation and reliable holding power in various materials, while the fully threaded design distributes stress evenly, preventing loosening under dynamic conditions. Its compliance with ISO 4017 and DIN 933 standards guarantees dimensional accuracy and interchangeability, streamlining procurement and maintenance processes for B2B buyers.
Specification Summary & Compliance
This fastener features a Class 6h thread fit for precise engagement and meets ISO 4017 and DIN 933 specifications for dimensional consistency. It adheres to ISO 898 mechanical properties and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory alignment for global industrial use.
