S-91772A072 1-72 x 5/8" 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 environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding applications.
• Precise thread engagement with Class 2A thread fit and UNF fine threads, ensuring secure fastening and vibration resistance.
• Optimized drive performance using a Phillips No. 0 drive style for efficient installation and reduced cam-out risk.
• Full threading along the 5/8" length provides maximum grip and uniform stress distribution across the entire fastener.
• Compliant with major industry standards including ASME B18.6.3, RoHS 3, and REACH, guaranteeing quality and environmental safety.
• Versatile pan head design with a rounded profile offers a low-profile finish and easy wrench access in confined spaces.

Professional Applications & Engineering Value

Engineered for precision assemblies, these 1-72 UNF fine thread pan head screws deliver exceptional performance in industrial and electronic applications where reliability is non-negotiable. The passivated 18-8 stainless steel provides excellent resistance to oxidation and chemical exposure, making these screws suitable for outdoor, marine, or chemically aggressive settings. The fine thread design enhances vibration resistance and ensures tighter clamping force in thin materials or delicate components. With a fully threaded shank and Class 2A thread fit, these fasteners minimize loosening under dynamic loads, offering engineers a dependable solution for maintaining assembly integrity in machinery, enclosures, and precision instruments.

Specification Summary & Compliance

This screw adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. Threads conform to UNF fine thread standards with a Class 2A tolerance for consistent fit. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances. Manufactured from 18-8 stainless steel with a passivated finish, it meets the stated mechanical properties including 70,000 psi tensile strength and Rockwell B70 hardness.