S-91773A580 5/16"-18 x 5/8" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round Head Phillips 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
- High tensile strength of 100,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B100 hardness provides superior durability and resistance to wear over repeated use
- Class 2A thread fit with UNC coarse threading enables quick assembly and secure fastening in various materials
- Fully threaded design offers maximum grip and holding power across the entire 5/8" length
- No. 3 Phillips drive with rounded head allows for efficient installation and a clean, finished appearance
- Compliance with ASME B18.6.3, RoHS, and REACH guarantees quality, safety, and environmental responsibility
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 5/16"-18 UNC Rounded Head Phillips Screws deliver critical performance where corrosion resistance and mechanical strength are paramount. The 18-8 Stainless Steel material, enhanced by a passivated finish, significantly extends service life in moist or chemically aggressive environments, reducing maintenance costs and downtime. The coarse UNC thread and Class 2A fit ensure rapid, reliable installation in metals, plastics, and composites, minimizing cross-threading risks. With a fully threaded shank and high tensile strength, they provide uniform clamping force and vibration resistance in machinery, automotive assemblies, and structural frameworks, making them a trusted choice for engineers prioritizing longevity and compliance with ASME B18.6.3 standards.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with a diameter of 0.313" and coarse thread spacing for optimal engagement. Manufacturing adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.
