S-90550A430 8-32 x 5/8" ASME B18.3, ASTM F879, MIL-DTL-18240 Venting Stainless Steel Hex-Drive Flat Head Screws
Venting 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 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
- Precise Class 3A thread fit for secure, vibration-resistant assemblies and reduced risk of loosening
- Vented design prevents pressure buildup and allows for easy installation in sealed applications
- 82° countersink angle provides a flush, professional finish that minimizes protrusion and snagging hazards
- Hex drive compatibility with 3/32" tools enables high-torque installation and removal without cam-out
- Full UNC coarse threading ensures faster assembly and superior holding power in various materials
- Comprehensive compliance with ASME, ASTM, and military standards guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
These 8-32 UNC flat head screws deliver exceptional performance in demanding industrial environments where corrosion resistance and precise fit are critical. The 18-8 Stainless Steel composition withstands moisture, chemicals, and temperature variations, making them ideal for aerospace components, electronic enclosures, and machinery assemblies. The vented screw design eliminates air pressure differentials during installation, preventing seal damage in pressurized systems. With Class 3A thread fit and hex drive configuration, these fasteners maintain clamping force under vibration while allowing high-torque installation in confined spaces. The 82° countersink creates seamless surface transitions for applications requiring aerodynamic profiles or clean aesthetic finishes.
Specification Summary & Compliance
This 5/8" flat head screw features 8-32 UNC coarse threads with Class 3A precision fit for superior dimensional accuracy. Manufacturing complies with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring consistent performance across industrial applications. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for hazardous substance restrictions.
