S-91280A154 M4 x 50 mm ISO 4014, DIN 931, 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 demanding industrial environments
- High tensile strength of 110,000 psi and Class 8.8 rating for reliable performance under heavy loads
- Precise Rockwell C21 hardness ensures excellent durability and resistance to wear
- Partially threaded design with 13mm thread length for secure fastening and reduced weight
- External hex drive and hex head allow for easy installation with standard tools
- Coarse metric thread (M4 x 0.7mm) provides quick assembly and strong holding power
- Compliance with ISO 4014/DIN 931 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This M4 hex head screw is engineered from Class 8.8 steel to deliver exceptional mechanical properties, making it ideal for machinery, automotive assemblies, and structural frameworks where vibration resistance and load-bearing capacity are critical. The zinc plated finish effectively combats rust and corrosion, reducing maintenance costs in humid or outdoor settings. Its partially threaded configuration with a coarse metric thread ensures rapid installation and reliable clamping force, while the external hex drive facilitates straightforward tightening with common wrenches. By meeting ISO 4014 and DIN 931 specifications, it offers consistent performance and compatibility in global industrial applications, minimizing downtime and ensuring operational safety.
Specification Summary & Compliance
This fastener adheres to ISO 4014 and DIN 931 standards, with a Class 6h thread fit for precise dimensional accuracy. It is manufactured from steel with a zinc plated finish, right-hand coarse thread (M4 x 0.7mm pitch), and a length of 50 mm. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for various industrial uses.
