S-98164A542 1/2"-13 x 1 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 and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Precision thread engagement through Class 3A thread fit and UNC coarse threading ensures reliable fastening performance
- Optimized installation efficiency with 5/16" hex drive and fully threaded design for quick, secure assembly
- Enhanced durability with rounded button head profile that resists stripping and provides clean aesthetic finish
- Regulatory compliance assurance meeting ASME B18.3 specifications and international RoHS 3/REACH standards
- Versatile 1-3/4" length accommodates various material thicknesses while maintaining structural integrity
Professional Applications & Engineering Value
These 316 Stainless Steel rounded head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threading and Class 3A thread fit provides superior vibration resistance in machinery, automotive, and marine applications, while the passivated finish significantly enhances protection against chemical exposure and saltwater environments. The hex drive design ensures high torque transmission during installation, reducing the risk of fastener failure in high-stress assemblies. Engineered for structural applications requiring 70,000 psi tensile strength, these fully threaded fasteners maintain joint integrity in critical connections subject to dynamic loads and temperature variations.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit precision and UNC 1/2"-13 coarse threading. The 316 Stainless Steel construction with passivated finish provides optimal corrosion protection, while mechanical properties include 70,000 psi tensile strength and Rockwell B55 hardness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for global industrial applications.
