S-91400A906 5/16"-18 x 1 1/2" FF-S-92, QQ-P-35, MS51957-100 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 in demanding applications
• Fully threaded UNC coarse spacing provides faster installation and improved grip in various materials
• Class 2A thread fit guarantees consistent, precise engagement for reduced assembly issues
• Rounded pan head with Phillips drive offers a low-profile, secure fastening solution with easy tool access
• Compliance with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-100 ensures adherence to rigorous industrial standards
• RoHS 3 and REACH certification supports environmental regulations and safe usage in global markets

Professional Applications & Engineering Value

This 5/16"-18 x 1-1/2" passivated 18-8 stainless steel rounded head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress conditions. The passivated surface treatment enhances durability by forming a protective layer that resists oxidation and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. With its fully threaded UNC coarse spacing and Class 2A thread fit, it ensures quick, secure fastening in metals, plastics, and composites, reducing installation time and maintenance needs. The Phillips drive and rounded pan head design provide a flush finish, minimizing snagging in automated assembly lines. Ideal for machinery, electrical enclosures, and structural frameworks, this screw delivers long-term reliability and cost savings by preventing fastener failure and downtime.

Specification Summary & Compliance

This screw features precise UNC thread with Class 2A fit for consistent dimensional accuracy and coarse spacing to enhance grip. It meets Fed. Spec. FF-S-92, QQ-P-35, and MS51957-100 manufacturing standards, ensuring quality and interchangeability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.