S-91792A109 4-40 x 7/16" ASME B18.6.3 Stainless Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• High tensile strength of 100,000 psi ensures reliable, long-lasting fastening under demanding loads
• Rockwell B100 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers smooth assembly and consistent performance with standard mating parts
• Slotted pan head design allows for easy installation and removal with common hand tools
• Full threading and coarse UNC thread enables quick engagement and strong holding power
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This 4-40 UNC rounded head slotted screw is engineered to address critical industrial fastening challenges where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel material, combined with a passivated finish, effectively resists oxidation and chemical exposure, making it ideal for use in marine, chemical processing, and outdoor equipment. The slotted pan head design facilitates straightforward manual installation in tight spaces, while the coarse UNC threads and full threading ensure rapid assembly and robust connections in machinery, electronics, and automotive components. Its compliance with ASME B18.6.3 standards guarantees dimensional accuracy and interchangeability, reducing downtime and maintenance costs in B2B applications.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring consistent engagement and performance. It adheres to ASME B18.6.3 for dimensional and mechanical requirements, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses.