S-97763A285 5/16"-18 x 1 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments.
• Superior tensile strength of 70,000 psi ensures reliable performance under high-stress applications.
• Precise Class 3A thread fit provides excellent engagement and vibration resistance in assemblies.
• Easy installation and removal with a 3/16" hex drive and fully threaded coarse UNC design.
• Durable rounded button head offers a low-profile, aesthetically pleasing finish with reduced snagging.
• Consistent hardness at Rockwell B55 maintains structural integrity and prevents stripping.
• Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH for safe, standardized use.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these Black-Oxide 18-8 Stainless Steel Rounded Head Screws address critical challenges like corrosion, vibration loosening, and assembly efficiency. The coarse UNC threading and Class 3A fit ensure quick, secure fastening in metals and plastics, reducing installation time while enhancing joint reliability. With a hex drive and fully threaded design, they provide uniform clamping force, making them ideal for machinery, automotive, and construction applications where durability and compliance with ASME B18.3 standards are paramount. The black-oxide finish adds an extra layer of protection against wear and environmental exposure, extending service life in tough conditions.

Specification Summary & Compliance

This screw meets precise dimensional tolerances, including a Class 3A thread fit and UNC coarse thread spacing for consistent performance. It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial use.