S-94444A112 5/16"-18 x 1 1/2" 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 Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable load-bearing capacity for demanding applications
- Rockwell B70 hardness provides excellent wear resistance and long-term durability
- External hex drive design allows for easy installation and removal with standard tools
- Class 2A thread fit guarantees precise, consistent engagement while maintaining assembly efficiency
- Coarse UNC threading enables faster installation and better performance in vibration-prone settings
- Compliance with ASME B18.2.1 ensures dimensional accuracy and interchangeability
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 5/16"-18 UNC hex head screws deliver exceptional performance where corrosion resistance and structural integrity are paramount. The Black-Oxide 18-8 Stainless Steel construction provides enhanced protection against oxidation and chemical exposure, making them ideal for marine, chemical processing, and outdoor infrastructure projects. The partially threaded design combined with coarse UNC threading ensures secure fastening in materials prone to vibration loosening, while the external hex drive facilitates quick installation with standard wrenches. These screws effectively address common engineering challenges including galvanic corrosion, thread stripping, and maintenance accessibility in confined spaces.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features precise Class 2A thread fit with coarse thread spacing, manufactured to ASME B18.2.1 specifications for dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a minimum thread length of 7/8" and overall length of 1-1/2", these screws maintain consistent performance within the specified inch system measurements and mechanical properties.
