S-91239A138 M4 x 6 mm ISO 7380 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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
- Exceptional tensile strength of 140,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
- High durability and wear resistance due to Rockwell C32 hardness, maintaining integrity under repeated stress.
- Secure and efficient installation with a 2.5 mm hex drive and button head design, allowing for high torque application and a low-profile finish.
- Wide compatibility and easy assembly with a fully threaded M4 coarse pitch (0.7 mm) and Class 6g thread fit, ensuring quick fastening in various materials.
- Compliance with international standards including ISO 7380, providing assurance of quality and interchangeability in global projects.
- Environmentally safe usage as it meets RoHS 3 and REACH regulations, supporting sustainable and compliant manufacturing processes.
Professional Applications & Engineering Value
This M4 button head screw is engineered for high-strength industrial applications where reliability is critical. Made from black-oxide alloy steel, it offers enhanced corrosion resistance, making it ideal for machinery, automotive assemblies, and outdoor equipment exposed to moisture and chemicals. The fully threaded metric coarse pitch design ensures rapid installation and strong holding power in metals and plastics, reducing assembly time and vibration loosening risks. With a Class 10.9 strength grade and hex drive, it provides superior clamping force for heavy-duty fastening, solving common issues like strip-out and fatigue in dynamic environments. Its rounded head profile adds a sleek, low-profile finish, perfect for applications where space and safety are concerns.
Specification Summary & Compliance
This fastener features precise metric threading with a Class 6g thread fit for consistent engagement and M4 x 0.7 mm coarse pitch dimensions. It adheres to ISO 7380 manufacturing standards, ensuring dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for use in various industries.
