S-92210A456 5/8"-18 x 1 1/4" ASME B18.3 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 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh industrial environments
- High tensile strength of 70,000 psi and Rockwell B55 hardness for reliable performance in demanding applications
- Precise Class 3A thread fit enables secure, vibration-resistant connections with minimal risk of loosening
- 82° countersink angle and flat head design provides flush mounting for clean, professional finishes
- 3/8" hex drive allows for high-torque installation and easy removal with standard tools
- Fully threaded design maximizes grip length and load distribution across the entire fastener
- Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental responsibility
Professional Applications & Engineering Value
These 5/8"-18 UNF flat head screws deliver exceptional engineering value where precision, strength, and corrosion resistance are critical. The combination of 18-8 stainless steel material and passivated finish provides superior protection against rust and chemical exposure, making them ideal for marine, chemical processing, and food equipment applications. The fine UNF thread spacing and Class 3A thread fit ensure tight, secure fastening in high-vibration environments, while the 82° countersink angle creates seamless, flush installations in machinery, structural components, and precision equipment. The hex drive design enables high-torque installation without slippage, reducing assembly time and improving workplace efficiency.
Specification Summary & Compliance
This flat head screw features precision 5/8"-18 UNF threading with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 specifications, it ensures consistent quality and interchangeability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components. With 70,000 psi tensile strength and Rockwell B55 hardness, it delivers reliable mechanical performance across demanding applications.
