S-91772A522 6-40 x 1" 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
• Enhanced thread engagement through fine UNF threading and Class 2A fit, ensuring vibration-resistant, secure fastening
• High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding applications
• Optimized drive efficiency with Phillips No. 2 drive, enabling quick installation and reduced assembly time
• Full threading along the 1" length maximizes grip and distribution of clamping force
• Compliant with ASME B18.6.3 and environmental regulations (RoHS 3, REACH), ensuring quality and safety standards
• Rounded pan head design offers a low-profile, smooth finish that minimizes snagging and improves aesthetics

Professional Applications & Engineering Value

These 6-40 UNF fine thread pan head screws are precision-engineered from passivated 18-8 stainless steel to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The fine thread design and Class 2A thread fit provide excellent resistance to shock and dynamic loads, making them suitable for machinery, electronics, and automotive components where reliability is critical. The fully threaded shank and Phillips drive facilitate consistent torque application, reducing the risk of strip-out and ensuring long-term fastening integrity in corrosion-prone settings.

Specification Summary & Compliance

This product adheres to ASME B18.6.3 specifications, with a Class 2A thread fit for precise dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The screws feature a UNF fine thread (6-40 size), right-hand thread direction, and are manufactured to deliver consistent performance in industrial fastening applications.