S-91783A084 2-56 x 3/4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• High tensile strength of 100,000 psi ensures reliable, long-lasting fastening under demanding mechanical loads
• Rockwell B100 hardness provides excellent durability and wear resistance for repeated assembly/disassembly cycles
• Class 2A thread fit with UNC coarse threading enables quick installation and secure engagement in various materials
• Fully threaded design offers maximum grip length and uniform stress distribution along the entire fastener
• Slotted drive with rounded head profile allows for straightforward installation using standard tools while providing a finished appearance
• Comprehensive regulatory compliance including ASME B18.6.3 standards and environmental certifications for global applications

Professional Applications & Engineering Value

These 2-56 UNC rounded head slotted screws deliver critical performance advantages in precision assembly applications where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition, enhanced by passivated surface treatment, effectively resists oxidation and chemical degradation in manufacturing environments, electrical enclosures, and marine applications. The coarse UNC thread pattern with Class 2A fit ensures rapid installation while maintaining secure fastening in metals, plastics, and composite materials. The combination of 100,000 psi tensile strength and fully threaded design provides uniform clamping force distribution, preventing joint failure in vibration-prone equipment and machinery where consistent performance is essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This fastener maintains precise Class 2A thread fit tolerance per UNC standards with right-hand threading direction. Manufacturing and dimensional specifications strictly adhere to ASME B18.6.3 requirements. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) regulations regarding chemical substances of very high concern, ensuring environmental responsibility and global market acceptance.