S-91781A158 6-32 x 1 3/4" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Precision thread engagement with Class 2A fit and fully threaded UNC coarse threads for secure fastening and vibration resistance
• Optimal flush mounting thanks to the standard flat head profile and 82° countersink angle for smooth surface finishes
• Reliable industrial compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH regulations for safe, standardized use
• Easy installation and removal with slotted drive design, simplifying maintenance in tight spaces
• Versatile coarse threading (6-32 UNC) providing quick assembly and reduced cross-threading risks in various materials

Professional Applications & Engineering Value

Engineered for industrial durability, these 6-32 UNC flat head screws in 18-8 Stainless Steel address critical challenges like corrosion, high stress, and regulatory compliance. The passivated finish enhances surface protection against oxidation and chemical exposure, making them ideal for machinery, electrical enclosures, and outdoor equipment. With fully threaded coarse UNC design and Class 2A thread fit, they ensure rapid installation and consistent clamp load in metals, plastics, and composites. The 82° countersink angle and flat head profile enable seamless integration into countersunk holes, preventing protrusions in automated systems and precision assemblies. By combining 80,000 psi tensile strength with standardized dimensions per ASME B18.6.3, these screws reduce failure risks and maintenance downtime in manufacturing, aerospace, and automotive sectors.

Specification Summary & Compliance

This screw features a 6-32 UNC coarse thread with Class 2A tolerance for precise fit, and is fully threaded for uniform load distribution. It adheres to ASME B18.6.3 dimensional standards, ensuring interchangeability and performance consistency. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances for safe industrial and commercial use.