S-91400A112 4-40 x 7/16" FF-S-92, QQ-P-35, MS51957-16 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 80,000 psi ensures reliable performance under heavy loads and vibration
• Fully threaded design provides maximum grip and uniform stress distribution across the entire length
• Class 2A thread fit with UNC coarse threading offers easy assembly and excellent resistance to loosening
• Rounded pan head with Phillips drive delivers secure installation and a clean, finished appearance
• Compliance with multiple industry standards including Fed. Spec. FF-S-92 and MS51957-16 guarantees consistent quality
• RoHS 3 and REACH compliant for environmentally responsible and safe usage in regulated industries

Professional Applications & Engineering Value

This 4-40 UNC rounded pan head Phillips screw in passivated 18-8 stainless steel addresses critical engineering challenges in industrial assembly. The coarse UNC threading combined with Class 2A thread fit ensures rapid installation and vibration resistance in machinery, electronics, and automotive applications. The fully threaded design maximizes holding power across the entire 7/16" length, preventing joint failure in high-stress environments. With its 80,000 psi tensile strength and corrosion-resistant passivated finish, it delivers long-term reliability in humid or chemically exposed settings, reducing maintenance costs and downtime for B2B operations.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards with a 4-40 thread size and coarse thread spacing. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-16 specifications. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.