S-91771A848 0-80 x 3/32" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Precise flush mounting thanks to the flat head with 82° countersink angle and undercut profile, providing a clean, secure fit in countersunk holes.
• High mechanical strength delivering 70,000 psi tensile strength and Rockwell B80 hardness for dependable performance under load.
• Fine thread engagement with UNF Class 2A thread fit, offering excellent vibration resistance and secure fastening in precision applications.
• Efficient installation using the Phillips No. 0 drive, reducing cam-out risks and speeding up assembly processes.
• Full threading along the 3/32" length ensures maximum grip and uniform stress distribution in thin materials.
• Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH, guaranteeing safety and environmental standards for global supply chains.

Professional Applications & Engineering Value

This 0-80 UNF flat head screw is engineered to address critical challenges in precision assembly, such as minimizing protrusion in tight spaces while maintaining high clamping force. The passivated 18-8 stainless steel material combats corrosion in humid or chemical-exposed settings, extending service life in electronics, aerospace, and medical devices. Its fine UNF threads and Class 2A fit provide superior resistance to loosening under vibration, a common issue in machinery and automotive components. The flat head with undercut profile ensures a seamless finish, reducing snagging risks and improving aesthetics in consumer products. Ideal for applications demanding high tensile strength and regulatory adherence, this screw delivers reliability where failure is not an option.

Specification Summary & Compliance

This screw features a 0-80 UNF fine thread with Class 2A thread fit for precise dimensional accuracy, ensuring consistent performance in threaded holes. Manufactured in compliance with ASME B18.6.3 specifications, it guarantees interchangeability and quality. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and health regulations for hazardous substances.