S-92198A689 5/16"-18 x 1 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex Head 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 for long-lasting performance in harsh environments
- High tensile strength of 80,000 PSI ensures reliable fastening under heavy loads and vibration
- External hex drive design provides secure tool engagement and efficient installation with standard wrenches
- Class 2A thread fit with UNC coarse threading delivers consistent engagement and reduces cross-threading risks
- Partially threaded shank design allows for precise clamping force control in assembled components
- Rockwell B70 hardness rating maintains thread integrity and prevents stripping during repeated use
- Full compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 5/16"-18 UNC hex head screw delivers exceptional engineering value through its optimized material selection and mechanical properties. The 18-8 stainless steel composition provides excellent corrosion resistance, making it ideal for applications in chemical processing, marine environments, and food processing equipment where moisture resistance is critical. The coarse UNC threading combined with Class 2A thread fit ensures rapid assembly and reliable performance in high-vibration industrial machinery, construction equipment, and automotive assemblies. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening while the external hex drive accommodates standard industrial tools for efficient maintenance and installation procedures.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 5/16"-18 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.2.1 specifications ensuring dimensional accuracy and mechanical reliability. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations for environmental safety and restricted substance control, making it suitable for global industrial applications requiring certified components.
