S-90272A129 5-40 x 5/8" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Excellent holding power with fully threaded UNC coarse thread design that prevents loosening under vibration
• High tensile strength rating of 60,000 psi ensures reliable performance in structural applications
• Precise Class 2A thread fit provides smooth installation and consistent engagement with mating components
• Optimized drive efficiency with Phillips No. 2 drive that reduces cam-out during installation
• Rockwell B70 hardness maintains thread integrity and prevents stripping during repeated use
• Rounded pan head design offers low-profile installation with improved aesthetic appearance

Professional Applications & Engineering Value

These 5-40 UNC coarse thread screws deliver exceptional engineering value across industrial applications where vibration resistance and corrosion protection are critical. The zinc-plated steel construction provides a durable barrier against environmental factors, while the fully threaded design ensures maximum grip length for superior load distribution. The rounded pan head with Phillips No. 2 drive facilitates quick installation in confined spaces, making them ideal for machinery assembly, electrical enclosures, and automotive components. With 60,000 psi tensile strength and Rockwell B70 hardness, these screws maintain structural integrity under stress, solving common fastener failure points in manufacturing and maintenance operations.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for precise mating. These 5-40 UNC coarse thread screws feature 5/8" length and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.