S-91772A520 6-40 x 5/8" 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 heavy loads and vibration.
• Fine UNF thread design provides enhanced grip and secure fastening in precision assemblies.
• Fully threaded shank allows for maximum engagement and consistent clamping force along the entire length.
• Class 2A thread fit guarantees easy assembly and interchangeability with standard UNF nuts and components.
• Phillips No. 2 drive offers efficient installation with common tools, reducing assembly time.
• Compliance with ASME B18.6.3, RoHS, and REACH ensures quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This 6-40 UNF fine thread pan head screw is engineered for demanding applications where precision and durability are critical. Made from passivated 18-8 stainless steel, it resists corrosion in moist or chemical-exposed settings, reducing maintenance costs and downtime. The fine thread and Class 2A fit deliver tight, secure connections in machinery, electronics, and automotive assemblies, preventing loosening under stress. With a fully threaded design and Phillips drive, it simplifies installation in tight spaces, enhancing efficiency in production lines. Ideal for industrial fastening, this screw meets rigorous standards, ensuring long-term reliability in OEM and MRO operations.

Specification Summary & Compliance

This screw features a 6-40 UNF fine thread with Class 2A tolerance for precise fit, and is manufactured to ASME B18.6.3 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.