S-91772A879 5/16"-24 x 1 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional tensile strength rated at 70,000 psi for reliable performance under high-stress applications
• Precise fine thread engagement with UNF 5/16"-24 threading and Class 2A fit ensuring secure fastening
• Optimized drive efficiency featuring Phillips No. 4 drive for easy installation and reduced cam-out risk
• Full threading design providing maximum grip length and uniform load distribution
• Compliant with industry standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed quality and safety
• Versatile rounded pan head profile offering a low-profile finish and improved aesthetic integration

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 5/16"-24 UNF rounded head screw delivers critical performance advantages. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, extending service life in moisture-prone or corrosive environments. Its fine thread design ensures superior holding power in brittle materials or applications requiring vibration resistance, while the fully threaded configuration maximizes connection integrity across the entire fastener length. The Phillips No. 4 drive facilitates efficient assembly in tight spaces, reducing installation time and tool wear. Ideal for machinery, automotive components, and electronic enclosures, this screw addresses common challenges like material fatigue, loosening under dynamic loads, and compliance with stringent environmental regulations.

Specification Summary & Compliance

This screw maintains precise Class 2A thread fit tolerances per UNF standards, ensuring consistent engagement and interchangeability. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. Key dimensions include a 1 1/2" length, 0.615" head diameter, and right-hand thread orientation, providing reliable performance in standardized assembly processes.