S-91280A971 M20 x 75 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 load-bearing capacity with Class 8.8 strength rating and 110,000 psi tensile strength for demanding industrial applications
- Enhanced corrosion resistance through zinc plating, extending service life in harsh environments
- Optimized thread engagement with M20 coarse (2.5mm pitch) threads providing faster assembly and reduced cross-threading risk
- Reliable mechanical performance backed by Rockwell C21 hardness for consistent durability under stress
- Secure external hex drive design enables high torque application with standard tools
- Versatile partial threading allows for both clamping and alignment functions in structural applications
- Global compliance assurance meeting ISO 4014, DIN 931, and SAE J1199 standards for international project compatibility
Professional Applications & Engineering Value
This M20 hex head screw delivers critical engineering solutions for heavy-duty fastening challenges. The Class 8.8 steel construction provides reliable performance in structural applications where vibration resistance and load distribution are paramount. The zinc plated finish significantly enhances corrosion protection in industrial environments, while the coarse metric threading (2.5mm pitch) ensures rapid installation and superior grip in various materials. The partially threaded design offers precise clamping control, making it ideal for machinery assembly, construction frameworks, and equipment manufacturing where both alignment and secure fastening are required. With its external hex drive and standardized dimensions, this fastener integrates seamlessly into existing maintenance protocols and tool systems.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerances with M20 x 2.5mm coarse thread specification and 75mm length (46mm minimum thread length). Fully compliant with ISO 4014, DIN 931, and SAE J1199 manufacturing standards. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
