S-91263A861 M2.5 x 6 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 tensile strength with Class 10.9 rating (120,000 psi) ensures reliable performance in high-stress industrial applications.
- Superior corrosion resistance from zinc-plated alloy steel construction, extending service life in harsh environments.
- High hardness (Rockwell C32) provides excellent wear resistance and reduces thread deformation during installation.
- Coarse 0.45mm pitch threading enables faster assembly and better vibration resistance compared to fine-thread alternatives.
- 90° countersink angle and flat head design delivers flush mounting for streamlined surfaces and improved aesthetics.
- 1.5mm hex drive compatibility allows secure tool engagement and prevents stripping during high-torque applications.
- Full threading along 6mm length ensures maximum grip strength and uniform load distribution across joined materials.
Professional Applications & Engineering Value
This M2.5 metric flat head screw addresses critical engineering challenges in precision assembly where space constraints and material integrity are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for automotive components, electrical enclosures, and machinery subjected to environmental exposure. With its Class 10.9 strength rating and coarse thread pitch, it maintains clamping force under vibration while the 90° countersink creates seamless interfaces in sheet metal and plastic assemblies. The fully threaded design and hex drive ensure consistent installation torque across production runs, reducing assembly errors in high-volume manufacturing environments.
Specification Summary & Compliance
Manufactured to DIN 7991 specifications with Class 6g thread fit tolerance for precision mating components. The fastener maintains metric M2.5 x 0.45mm coarse thread dimensions with 6mm length and right-hand threading. Compliance certifications include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) for environmental safety standards in industrial applications.
