S-93190A303 1/4"-28 x 5/8" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws
Super-Corrosion-Resistant 316 Stainless Steel Hex 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, ideal for harsh environments and chemical exposure
- Exceptional tensile strength rated at 70,000 psi for reliable performance under high-stress industrial loads
- Precise Class 2A thread fit ensures smooth installation and secure fastening with minimal risk of cross-threading
- Fully threaded design provides maximum grip and holding power across the entire 5/8" length
- External hex drive allows for high-torque application with standard tools, reducing installation time
- Fine UNF thread pattern offers improved vibration resistance and superior clamping force in dynamic applications
- Comprehensive compliance with ASME B18.2.1 standards and environmental regulations for guaranteed quality and safety
Professional Applications & Engineering Value
These 1/4"-28 UNF hex head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The 316 stainless steel composition provides exceptional protection against chloride-induced stress corrosion cracking, making these fine thread fasteners ideal for marine equipment, chemical processing plants, and food processing machinery. The fully threaded design combined with Class 2A thread fit ensures uniform stress distribution and eliminates weak points that can compromise joint integrity. With 70,000 psi tensile strength and Rockwell B70 hardness, these external hex drive screws maintain clamping force under extreme vibration and thermal cycling, solving common fastener failure points in heavy machinery, structural assemblies, and precision equipment applications.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit per UNF standards with 1/4"-28 fine threading and right-hand direction. Manufacturing complies with ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
