S-92949A598 5/16"-24 x 5/8" ASME B18.3 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Precise thread engagement with Class 3A UNF fine threading ensuring reliable, vibration-resistant fastening in critical applications
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for durable, long-lasting performance
- Efficient installation with 3/16" hex drive and rounded button head design allowing easy access in confined spaces
- Full thread coverage across the entire 5/8" length providing maximum grip and load distribution
- Regulatory compliance meeting ASME B18.3 standards and environmental regulations (RoHS 3, REACH) for global industrial use
- Right-hand thread direction ensuring standard installation compatibility across various equipment and machinery
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw with 5/16"-24 UNF fine threading addresses critical engineering challenges in industrial settings where corrosion resistance and vibration resistance are paramount. The Class 3A thread fit provides exceptional dimensional accuracy for precision assemblies in machinery, automotive, and electronic enclosures. The combination of 70,000 psi tensile strength and passivated finish ensures reliable performance in demanding environments while the hex drive and button head profile facilitate quick installation in space-constrained applications. These fully threaded screws maintain consistent clamping force across the entire engagement length, preventing loosening under dynamic loads.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread fit tolerances with 5/16"-24 UNF fine threading and right-hand thread direction. Complies with ASME B18.3 standards for dimensional consistency and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The passivated finish on 18-8 stainless steel provides enhanced surface protection while maintaining the material's inherent corrosion resistance.
