S-98164A418 1/2"-13 x 2" 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 from 316 stainless steel construction, ideal for harsh chemical and marine environments
- Enhanced thread engagement with Class 3A fit and UNC coarse threads for reliable fastening in high-vibration applications
- High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial loads
- Secure installation with 5/16" hex drive providing positive torque transmission and reduced cam-out risk
- Durable surface protection through passivated finish that enhances corrosion resistance and extends service life
- Full threading capability allowing complete engagement along the entire 2" length for maximum holding power
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These 316 stainless steel rounded head screws deliver exceptional performance in corrosive environments where fastener failure is not an option. The combination of marine-grade 316 stainless steel and passivated finish provides superior protection against chloride-induced stress corrosion cracking, making them ideal for chemical processing equipment, marine hardware, and food processing applications. The UNC coarse thread profile with Class 3A fit ensures rapid installation and reliable performance in high-vibration industrial machinery, while the button head design offers a low-profile appearance with excellent bearing surface. These fully threaded screws maintain consistent 70,000 psi tensile strength throughout the fastener length, providing engineers with predictable performance in critical assembly applications.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC 1/2"-13 coarse thread specifications. These rounded head screws comply with ASME B18.3 dimensional requirements and maintain Rockwell B55 hardness with 70,000 psi tensile strength. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring suitability for global industrial applications with strict material restrictions.
