S-91781A165 1-72 x 3/16" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional tensile strength of 80,000 PSI ensures reliable fastening under high-stress conditions
• Precise Class 2A thread fit guarantees smooth installation and secure connections in fine-thread applications
• Standard 82° countersink angle allows for flush mounting in precision assemblies
• Full threading provides maximum grip and uniform load distribution along the entire length
• Rockwell B80 hardness offers excellent durability and resistance to wear
• Compliance with ASME B18.6.3 ensures consistent quality and interchangeability

Professional Applications & Engineering Value

These 1-72 UNF flat head slotted screws are engineered for precision applications where reliability is critical. The 18-8 stainless steel material combined with a passivated finish provides outstanding resistance to corrosion and oxidation, making them suitable for electronics, aerospace, and medical equipment. The fine UNF threads and Class 2A fit ensure tight, vibration-resistant connections in assemblies requiring exact tolerances. Their fully threaded design and 82° flat head profile enable seamless countersinking, reducing protrusion and improving aerodynamics or aesthetics in finished products.

Specification Summary & Compliance

This screw meets ASME B18.6.3 specifications, with a Class 2A thread fit for consistent dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets. The UNF fine thread and precise 3/16" length adhere to industrial standards for reliable performance.