S-91802A081 2-56 x 1/2" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration.
• Class 2A thread fit provides consistent, smooth assembly and reduces cross-threading risks.
• Phillips No. 1 drive offers secure tool engagement and efficient installation with standard drivers.
• Fully threaded 1/2" length maximizes grip and holding power across the entire fastener.
• Oval head design combines a low-profile finish with effective countersinking for flush mounting.
• Compliance with ASME B18.6.3, RoHS, and REACH guarantees quality, safety, and environmental standards.

Professional Applications & Engineering Value

This 2-56 UNC oval head Phillips flat head screw is engineered to address critical challenges in precision assemblies, such as machinery, electronics, and automotive components. The passivated 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, extending service life in demanding conditions. With a coarse thread spacing and Class 2A thread fit, it ensures quick, reliable fastening without stripping, while the oval head profile allows for a sleek, flush finish that minimizes protrusion. Ideal for applications requiring high tensile strength and consistent performance, this screw reduces maintenance needs and enhances structural integrity in industrial settings.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, with a 1/2" length and fully threaded design for uniform load distribution. It meets ASME B18.6.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.