S-90729A566 M8 x 20 mm Stainless Steel Hex Drive Flat Head Screws
Stainless 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
- Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Secure and efficient installation through 5mm hex drive design, preventing cam-out during high-torque applications
- Precision thread engagement with Class 6g thread fit ensuring consistent fastening and vibration resistance
- Optimized head design featuring undercut flat head profile and 100° countersink angle for flush mounting and reduced stress concentration
- Full-threaded construction providing maximum grip length and uniform stress distribution across the entire fastener
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these M8 metric flat head screws address critical challenges in machinery assembly, structural frameworks, and marine equipment. The 316 Stainless Steel material delivers exceptional corrosion resistance against chlorides and chemical exposure, while the passivated finish enhances surface durability. The hex drive configuration ensures reliable torque transmission without stripping, particularly valuable in confined spaces. With coarse thread spacing and Class 6g thread fit, these fasteners maintain clamping force under vibration, making them ideal for high-stress environments where joint integrity is paramount. The undercut flat head design minimizes protrusion while distributing load efficiently.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 6g thread fit tolerance and head diameter tolerance of -0.127 to 0.127 mm. Features fully threaded M8 x 1.25mm coarse pitch configuration with right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international manufacturing standards for hazardous substance restrictions.
