S-91294A518 M20 x 50 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
- Exceptional tensile strength of 120,000 psi from Class 10.9 alloy steel for reliable load-bearing capacity
- Optimized fastening efficiency with 12mm hex drive providing maximum torque transfer and slip resistance
- Precision threading with Class 6g fit and 2.5mm coarse pitch for quick installation and vibration resistance
- Full thread engagement along the 50mm length ensures uniform stress distribution and superior holding power
- Standardized flat head profile with 90° countersink for seamless flush mounting in predrilled applications
- Regulatory compliance with DIN 7991/ISO 10642 standards for guaranteed dimensional accuracy and performance
Professional Applications & Engineering Value
Engineered for high-stress industrial applications, these M20 flat head screws deliver critical performance where fastener failure is not an option. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining Rockwell C32 hardness for exceptional wear resistance. The fully threaded right-hand design with 2.5mm coarse pitch enables rapid installation in structural steel, heavy machinery, and automotive assemblies, while the 12mm hex drive prevents tool slippage during high-torque applications. The standardized 90° countersink angle ensures perfect flush mounting in countersunk holes, making these metric screws ideal for applications requiring smooth surface finishes and reliable vibration resistance.
Specification Summary & Compliance
Manufactured to DIN 7991/ISO 10642 specifications with Class 6g thread fit tolerance for precision engagement. The Class 10.9 strength grade guarantees consistent mechanical properties, while compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety. The 36mm head diameter and 8.5mm head height maintain dimensional integrity per international metric screw standards.
