S-91735A397 1/4"-28 x 3/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel material, ideal for harsh environments including marine and chemical applications.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and mechanical stress.
• Passivated finish enhances durability and provides an extra layer of protection against rust and oxidation.
• Precise Class 2A thread fit with UNF fine threading for secure, vibration-resistant fastening in critical assemblies.
• Fully threaded design allows for maximum grip and uniform load distribution along the entire length.
• Rockwell B85 hardness offers excellent wear resistance and long-term reliability in repetitive use scenarios.
• Compliant with ASME B18.6.3, RoHS 3, and REACH ensuring adherence to industry standards and environmental safety regulations.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 stainless steel pan head Phillips screws with UNF fine thread provide exceptional resistance to corrosion, making them ideal for marine equipment, chemical processing plants, and outdoor infrastructure. The passivated finish and Class 2A thread fit minimize the risk of seizing and galling, ensuring smooth installation and reliable performance in high-vibration environments. With a robust 80,000 psi tensile strength and fully threaded design, they deliver consistent clamping force and prevent loosening, reducing maintenance needs and downtime in machinery, electronics, and automotive assemblies.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 2A tolerance for precise fit, and is manufactured in compliance with ASME B18.6.3 standards. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability.