S-92949A714 1/2"-13 x 1 1/4" 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 for extended service life in harsh environments
- Exceptional load-bearing capability with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Precise torque transmission through 5/16" hex drive design, ensuring secure fastening without stripping
- Reliable thread engagement with Class 3A thread fit and UNC coarse threads for vibration resistance and quick assembly
- Full threading coverage along the 1-1/4" length provides maximum grip and uniform stress distribution
- Industry-standard compliance with ASME B18.3 specifications for guaranteed interchangeability and performance
- Environmental responsibility through RoHS 3 and REACH compliance, meeting strict regulatory requirements
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 1/2"-13 UNC rounded head screws solve critical fastening challenges where corrosion resistance and high tensile strength are paramount. The 18-8 stainless steel material combined with passivated finish creates a protective barrier against chemical exposure and atmospheric corrosion, making them ideal for marine, chemical processing, and outdoor infrastructure. The Class 3A thread fit ensures precise mating with corresponding nuts and tapped holes, minimizing backlash in vibrating machinery. With fully threaded design and coarse UNC threads, these screws provide rapid installation and superior holding power in structural assemblies, equipment manufacturing, and maintenance operations where reliability cannot be compromised.
Specification Summary & Compliance
This rounded head screw features precise Class 3A thread fit according to UNC standards with 1/2"-13 thread size and coarse thread spacing. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety, ensuring environmental responsibility in industrial supply chains.
