S-91263A433 M3 x 20 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 durability with Class 12.9 alloy steel construction, ensuring reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
- High tensile strength of 170,000 psi and Rockwell C39 hardness for maximum load-bearing capacity and resistance to deformation
- Precise Class 5g6g thread fit and coarse threading for easier, faster installation and secure fastening
- Convenient 2mm hex drive and standard 90° countersink angle for flush mounting and straightforward tool engagement
- Full threading along the 20mm length ensures maximum grip and uniform stress distribution across the fastened materials
- Compliance with DIN 7991 standards guarantees consistent quality, dimensional accuracy, and interchangeability
Professional Applications & Engineering Value
Engineered for high-stress environments, these M3 flat head screws are ideal for machinery, automotive assemblies, and heavy-duty equipment where failure is not an option. The Class 12.9 alloy steel core provides exceptional resistance to shear and tensile forces, while the zinc plating offers reliable protection against corrosion, reducing maintenance needs. The coarse metric thread with a 0.5mm pitch ensures quick installation and robust holding power in metals and composites. With a fully threaded design and standard flat head profile, these screws deliver uniform clamping force and sit flush with surfaces, making them perfect for applications requiring a smooth finish and reliable long-term performance.
Specification Summary & Compliance
This fastener adheres to DIN 7991 specifications, ensuring precise dimensional control and a Class 5g6g thread fit for consistent performance. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for industrial use worldwide.
