S-91792A119 4-40 x 1 1/2" ASME B18.6.3 Stainless Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• High tensile strength of 100,000 psi ensures reliable fastening under demanding mechanical loads
• Precise Class 2A thread fit provides smooth installation and secure engagement with mating components
• Full threading along the 1½" length offers maximum grip and adjustment flexibility in assembly applications
• Standard pan head with slotted drive enables easy installation using common hand tools while maintaining a low-profile appearance
• Rockwell B100 hardness rating maintains thread integrity and prevents stripping during repeated use
• Coarse UNC thread pattern allows for quick assembly and reduced cross-threading risks in industrial settings

Professional Applications & Engineering Value

This 4-40 UNC rounded pan head slotted screw delivers critical engineering advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition combined with passivated surface treatment creates a protective barrier against oxidation and chemical exposure, making it ideal for electronics enclosures, machinery panels, and outdoor equipment. The coarse thread design ensures rapid installation while minimizing thread damage in blind holes or softer materials. With full threading along its 1½" length, this fastener provides maximum engagement depth for vibration-resistant connections in automotive, aerospace, and manufacturing equipment where consistent clamping force is essential for operational safety and longevity.

Specification Summary & Compliance

This precision-engineered fastener features Class 2A thread tolerances per UNC standards with a right-hand thread direction and coarse thread spacing. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance requirements. The screw meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations (updated 06/14/2023), ensuring environmental responsibility and workplace safety standards are maintained throughout its service life.