S-91239A152 M4 x 20 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 durability with Class 10.9 strength grade and Rockwell C32 hardness for reliable performance in demanding applications
- Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in various environments
- Precise installation control with 2.5mm hex drive design ensuring secure fastening and reduced tool slippage
- Optimized thread engagement through Class 6g thread fit and coarse 0.7mm pitch for quick assembly and vibration resistance
- Space-saving profile with low-profile button head design (2.2mm height) ideal for confined spaces and flush mounting requirements
- Maximum holding power with 140,000 psi tensile strength and full threading along the 20mm length for uniform load distribution
- Global compliance assurance meeting ISO 7380 standards with RoHS 3 and REACH environmental regulations
Professional Applications & Engineering Value
These M4 button head screws deliver critical engineering advantages in industrial applications where space constraints and corrosion resistance are paramount. The black-oxide alloy steel construction provides superior protection against environmental degradation while maintaining the Class 10.9 strength rating essential for high-stress assemblies. The combination of fully threaded M4 x 0.7mm coarse pitch threading with Class 6g tolerance ensures rapid installation and reliable performance in vibrating environments. The low-profile rounded head design with 2.5mm hex drive offers optimal torque transmission while maintaining a flush surface finish, making these metric screws ideal for machinery, automotive components, and electronic enclosures where both structural integrity and aesthetic considerations matter.
Specification Summary & Compliance
This fastener maintains Class 6g thread fit per metric standards with precise M4 x 0.7mm coarse pitch threading. Manufacturing complies with ISO 7380 specifications for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe use across global markets. The Class 10.9 strength rating corresponds to 140,000 psi tensile strength with Rockwell C32 hardness verification.
