S-90236A135 M4 x 20 mm ISO 14581 Alloy Steel Torx Flat Head Screws
Alloy Steel Torx Flat 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-plated alloy steel construction for extended service life in demanding environments
- Enhanced torque transmission and reduced cam-out with T20 Torx drive for reliable installation and maintenance
- Exceptional mechanical strength with Class 8.8 rating and Rockwell C22 hardness for high-stress applications
- Optimized thread engagement with fully threaded coarse 0.7mm pitch design for faster assembly and secure fastening
- Precise flush mounting with standard 90° flat head profile for clean, professional finishes
- Reliable dimensional accuracy with Class 6h thread fit ensuring consistent performance and interchangeability
- Comprehensive compliance assurance meeting international ISO 14581 standards and environmental regulations
Professional Applications & Engineering Value
These M4 flat head screws deliver exceptional engineering value through their zinc-plated alloy steel construction and Torx T20 drive system. The combination of Class 8.8 strength rating and Rockwell C22 hardness provides reliable performance in high-vibration applications where fastener integrity is critical. The fully threaded coarse pitch design ensures rapid installation and superior holding power in materials ranging from metals to engineered plastics. The standard flat head profile with 90° countersink angle enables seamless surface integration, making these metric screws ideal for precision assemblies in automotive, machinery, and electronic enclosures where both aesthetic finish and structural reliability are paramount.
Specification Summary & Compliance
This fastener features precise Class 6h thread fit tolerance with M4 x 0.7mm coarse thread pitch and 20mm length. Manufactured to ISO 14581 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand thread direction and fully threaded design ensure consistent performance across industrial applications while maintaining strict quality control standards.
