S-91781A842 10-32 x 3" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Superior holding power and fatigue resistance from a high 80,000 psi tensile strength and Rockwell B80 hardness.
• Precise and secure fastening with a Class 2A thread fit and fine UNF thread spacing, minimizing the risk of loosening under vibration.
• Efficient flush mounting enabled by the standard flat head profile and 82° countersink angle for a clean, professional finish.
• Reliable mechanical performance guaranteed by compliance with the rigorous ASME B18.6.3 manufacturing standard.
• Easy installation and adjustment with a standard slotted drive and right-hand thread direction.
• Safe for sensitive applications as it is fully compliant with RoHS 3 and REACH environmental regulations.

Professional Applications & Engineering Value

This 10-32 UNF flat head screw is engineered to solve critical challenges in industrial assembly and machinery. The 18-8 stainless steel material, enhanced by a passivated finish, provides outstanding resistance to oxidation and chemical exposure, making it ideal for applications in marine, chemical processing, and food-grade equipment where corrosion is a primary concern. The partially threaded design and fine thread spacing ensure maximum grip and vibration resistance in precision components, from electronic enclosures to automotive assemblies. Its flat head with an 82° countersink angle allows for a seamless, flush fit, preventing snagging and improving safety. By combining high tensile strength with strict dimensional standards, this screw delivers reliable performance in demanding industrial and engineering environments, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a 10-32 UNF thread with a Class 2A thread fit for precise tolerance, a 3" length with a minimum thread length of 1 1/2", and a standard flat head profile. It is manufactured in accordance with ASME B18.6.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to international standards.