S-90585A996 10-32 x 1 1/2" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh environments and extended service life
• High mechanical strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Precision thread fit with Class 3A UNF fine threads ensuring secure, vibration-resistant connections in critical assemblies
• Efficient installation and flush mounting featuring a standard 82° countersink angle and hex drive for easy, low-profile fastening
• Full threading along the 1 1/2" length provides maximum grip and uniform load distribution across the entire fastener
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety
• Consistent dimensional accuracy with controlled head diameter and height tolerances for reliable fit in pre-drilled holes

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 10-32 UNF flat head screws in 316 Stainless Steel address critical challenges in corrosive or high-stress environments. The passivated finish enhances surface durability, preventing rust and chemical degradation in marine, chemical processing, and outdoor settings. With a Class 3A thread fit and fine UNF threading, they deliver superior resistance to loosening under vibration, making them ideal for precision machinery, automotive assemblies, and electronic enclosures. The flat head design with an 82° countersink allows for seamless, flush installations, reducing protrusion risks while maintaining structural integrity. These screws provide long-term reliability where corrosion resistance and mechanical strength are non-negotiable.

Specification Summary & Compliance

This fastener adheres to strict dimensional and performance standards, including Class 3A thread fit per UNF specifications and ASME B18.3 manufacturing guidelines. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, with a tensile strength of 70,000 psi and full threading along the 1 1/2" length. The screw features a standard 82° countersink angle and is manufactured from 316 Stainless Steel with a passivated finish for enhanced corrosion protection.