S-90696A221 7/16"-20 x 4 1/2" ASME B18.3 18-8 Stainless Steel Socket Head Screws
18-8 Stainless Steel Socket 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, ideal for harsh industrial environments
- Exceptional mechanical strength offering 70,000 PSI tensile strength and Rockwell B70 hardness for reliable, heavy-duty performance
- Precise, secure fastening with Class 3A thread fit and UNF fine threads, minimizing loosening under vibration
- Easy installation and removal using a standard 3/8" hex drive, reducing assembly time and tool wear
- Optimized load distribution from the partially threaded design, enhancing joint integrity in critical applications
- Long-term reliability backed by compliance with ASME B18.3, ensuring dimensional accuracy and interchangeability
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory standards
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 18-8 Stainless Steel Socket Head Cap Screw addresses common challenges like corrosion, vibration-induced loosening, and high-stress fatigue. The 7/16"-20 UNF fine thread and Class 3A thread fit provide superior clamping force and resistance to dynamic loads, making it ideal for machinery, automotive assemblies, and precision equipment. The socket head design with a 3/8" hex drive allows for compact installations in confined spaces, while the partially threaded shank ensures optimal stress distribution. With a 70,000 PSI tensile strength and compliance with ASME B18.3, it delivers consistent performance in heavy-duty applications, reducing maintenance downtime and enhancing operational safety.
Specification Summary & Compliance
This screw features a Class 3A thread fit per UNF standards, ensuring tight tolerances and reliable engagement. It meets ASME B18.3 specifications for dimensional accuracy and is manufactured in accordance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, affirming its suitability for regulated industrial and international markets.
