S-98164A529 5/16"-24 x 3/4" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 chemical and marine environments
- Precise thread engagement through Class 3A thread fit, ensuring reliable fastening in critical assemblies
- Enhanced durability with 70,000 psi tensile strength and Rockwell B55 hardness for long-term performance
- Optimized drive efficiency with hex drive design providing secure tool engagement and reduced cam-out risk
- Maximum thread coverage through full threading along the 3/4" length for versatile installation depth
- Improved surface protection with passivated finish increasing corrosion resistance and extending service life
- Regulatory compliance meeting ASME B18.3 standards and environmental directives including RoHS 3 and REACH
Professional Applications & Engineering Value
These 316 stainless steel rounded head screws deliver exceptional performance in demanding industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of UNF fine threading and Class 3A thread fit provides superior vibration resistance in machinery, automotive, and marine equipment. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these hex drive screws ideal for chemical processing plants, offshore installations, and food processing equipment where exposure to corrosive agents is common. The fully threaded design allows for maximum adjustment flexibility while maintaining consistent clamping force across the entire fastener length.
Specification Summary & Compliance
This 5/16"-24 UNF screw features precision Class 3A thread fit with fine thread spacing for optimal engagement. Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The fastener maintains dimensional accuracy throughout production, ensuring consistent performance in industrial applications requiring reliable rounded head screws with exacting thread standards.
