S-97646A253 5/16"-18 x 5/8" 18-8 Stainless Steel Serrated-Flange Hex Head Screws
18-8 Stainless Steel Serrated-Flange 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
- High tensile strength of 100,000 psi ensures reliable performance under heavy loads and vibration
- Secure anti-loosening performance through integrated serrations and flange design that enhances locking without separate washers
- Precise Class 2A thread fit guarantees smooth assembly and consistent engagement in UNC coarse thread applications
- Optimized external hex drive allows for high-torque installation with standard tools, reducing installation time
- Full threading along the 5/8" length provides maximum grip and adjustability in various material thicknesses
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw delivers critical reliability in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The 18-8 Stainless Steel material inherently resists oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. Its flange design with serrations eliminates the need for additional lock washers, reducing parts count and assembly errors while maintaining clamp load under dynamic stresses. The coarse UNC thread and Class 2A fit ensure quick, secure fastening in metals and plastics, minimizing cross-threading risks. Engineered for high tensile strength (100,000 psi) and Rockwell B100 hardness, this screw withstands repetitive loads and vibrations in construction, automotive, and heavy machinery assemblies, providing long-term operational integrity.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent dimensional accuracy. Manufacturing complies with material and threading specifications for inch-system fasteners. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial components.
