S-91263A421 M2.5 x 5 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive 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
- Exceptional strength and reliability with Class 12.9 rating and 170,000 psi tensile strength, ideal for high-stress applications
- Superior corrosion resistance provided by zinc-plated alloy steel construction, extending service life in harsh environments
- Precise installation and removal enabled by 1.5mm hex drive design, ensuring secure fastening without stripping
- Optimal flush mounting with standard 90° countersink flat head profile for smooth surface finishes
- Enhanced thread engagement through coarse threading and Class 5g6g fit, reducing cross-threading risks
- Maximum material contact with fully threaded design, distributing load evenly along the entire screw length
- Regulatory compliance assurance meeting DIN 7991, RoHS 3, and REACH standards for global market acceptance
Professional Applications & Engineering Value
These M2.5 flat head screws deliver critical performance in demanding industrial settings where fastener failure is not an option. The zinc-plated alloy steel construction provides excellent corrosion protection while maintaining the Rockwell C39 hardness required for repeated disassembly in maintenance-heavy equipment. The fully threaded metric design with coarse 0.45mm pitch ensures rapid installation and superior holding power in metals, plastics, and composite materials. Engineered to DIN 7991 specifications, these hex drive screws solve common challenges in automotive assemblies, machinery manufacturing, and electronic enclosures where space constraints demand low-profile flat head fasteners with uncompromising strength.
Specification Summary & Compliance
This M2.5 x 0.45mm screw features Class 5g6g thread fit per ISO metric standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing complies with DIN 7991 specifications for flat head screws with 90° countersink angle. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial components.
