S-91781A102 0-80 x 1" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term durability in harsh environments.
• Reliable high-strength performance offering 80,000 psi tensile strength and Rockwell B80 hardness for secure, vibration-resistant assemblies.
• Precise thread engagement with Class 2A thread fit and UNF fine threading, providing superior holding power and reduced risk of cross-threading.
• Flush, low-profile installation thanks to the standard flat head with 82° countersink angle, ideal for applications requiring a smooth surface finish.
• Broad industry compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH regulations for safe, standardized use.
• Full-threaded design for maximum grip along the entire 1" length, enhancing load distribution and connection integrity.
• Easy manual installation with a simple slotted drive, allowing for quick adjustments and maintenance without specialized tools.

Professional Applications & Engineering Value

These 0-80 UNF flat head slotted screws are engineered for precision-driven industries where reliability and material integrity are critical. Made from 18-8 stainless steel with a passivated finish, they resist oxidation and chemical exposure, making them ideal for electronics, aerospace, and medical equipment assemblies. The fine thread and Class 2A fit ensure tight, secure fastening in thin materials, reducing the risk of stripping. The flat head design with an 82° countersink angle allows for seamless integration into machined surfaces, preventing protrusions that could interfere with moving parts. Fully threaded and right-hand oriented, these screws provide consistent clamping force, addressing common issues like loosening under dynamic loads and simplifying maintenance in compact, high-stress environments.

Specification Summary & Compliance

This product adheres to ASME B18.6.3 standards, with precise Class 2A thread fit and UNF fine threading (0-80 size). Dimensions include a 1" length, 0.06" thread diameter, and standard flat head profile. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory acceptance for industrial and commercial use.