S-92210A569 1/4"-28 x 3/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel and passivated finish, ideal for harsh industrial environments
• Exceptional tensile strength of 70,000 psi ensures reliable, long-lasting fastening under high-stress conditions
• Precise Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
• Efficient hex drive (5/32") allows for high-torque installation and easy maintenance with standard tools
• 82° countersink angle and flat head design enables a flush, secure fit for streamlined and safe surfaces
• Full threading along the 3/8" length ensures maximum grip and load distribution across the entire fastener
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global projects

Professional Applications & Engineering Value

Engineered for demanding applications, these 1/4"-28 UNF flat head screws address common industrial challenges such as component loosening due to vibration and corrosion-induced failure. The 18-8 stainless steel construction, enhanced by a passivated finish, provides excellent resistance to rust and chemicals, making them suitable for machinery, automotive, and marine environments. The fine UNF thread and Class 3A fit ensure tight, precise connections that maintain integrity under dynamic loads. With a hex drive for secure tool engagement and an 82° countersink for seamless installation, these screws deliver reliable performance in assemblies where flush mounting and high strength are critical, reducing maintenance needs and downtime.

Specification Summary & Compliance

This product features a 1/4"-28 UNF thread with Class 3A thread fit for high precision, and is manufactured in accordance with ASME B18.3 standards. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for industrial use.