S-91772A503 2-56 x 1/16" ASME B18.6.3 Stainless Steel Pan Head Phillips 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 70,000 psi ensures reliable performance under mechanical stress
• Fully threaded design provides maximum grip and uniform load distribution
• Class 2A thread fit guarantees consistent assembly and interchangeability
• Phillips drive with No. 1 size enables efficient installation using standard tools
• Pan head profile offers a low-profile, rounded finish for secure fastening
• Compliance with ASME B18.6.3 ensures adherence to recognized engineering standards

Professional Applications & Engineering Value

This 2-56 UNC pan head machine screw is engineered to address critical fastening challenges in precision assemblies. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for electronics, instrumentation, and machinery where environmental durability is essential. The coarse UNC thread and fully threaded design facilitate quick installation and robust holding power in thin materials, reducing the risk of stripping. With a Phillips drive and rounded pan head, it ensures smooth, flush mounting without protruding edges, enhancing safety and aesthetics in compact applications.

Specification Summary & Compliance

This screw features a 2-56 UNC thread with Class 2A fit for precise dimensional accuracy and a 1/16" length. It conforms to ASME B18.6.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.