S-91772A575 1/4"-28 x 3" 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
• Rockwell B70 hardness provides excellent durability and resistance to wear
• Class 2A thread fit offers consistent, precise assembly with standard UNF fine threads
• Phillips No. 3 drive enables efficient installation with common tools, reducing assembly time
• Partial threading design allows for optimal clamping force and secure fastening in various materials
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This 1/4"-28 x 3" passivated 18-8 stainless steel rounded head screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The passivated surface treatment enhances the inherent corrosion resistance of 18-8 stainless steel, extending service life in applications like machinery assembly, electrical enclosures, and outdoor equipment. Its UNF fine thread and Class 2A fit provide secure, vibration-resistant connections, reducing the risk of loosening over time. The partially threaded design ensures effective grip and load distribution, making it suitable for fastening components where precise tension control is critical. With a Phillips drive for easy installation, this screw streamlines maintenance and reduces downtime in industrial applications, offering a reliable solution for demanding environments.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 2A thread fit for precise dimensional accuracy and ease of assembly. It is manufactured in compliance with ASME B18.6.3 standards, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for industrial use.