S-92210A573 1/4"-28 x 2" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise installation and high torque capability through 5/32" hex drive and Class 3A thread fit for reliable, vibration-resistant assemblies
• Excellent flush-mounting performance with standard 82° countersink angle and flat head design for smooth surface finishes
• Enhanced load-bearing capacity from 70,000 psi tensile strength and Rockwell B55 hardness, ensuring long-term structural integrity
• Optimized for fine-thread applications using 1/4"-28 UNF fully threaded design, providing superior holding power in precision assemblies
• Guaranteed interchangeability and reliability through strict compliance with ASME B18.3 manufacturing standards
• Environmentally responsible sourcing with full RoHS 3 and REACH compliance for global regulatory acceptance

Professional Applications & Engineering Value

This 1/4"-28 UNF flat head socket cap screw delivers critical performance in demanding applications where corrosion resistance, precise alignment, and high tensile strength are paramount. The 18-8 stainless steel material combined with passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making it ideal for marine, chemical processing, and food equipment applications. The Class 3A thread fit ensures minimal backlash and superior vibration resistance in precision machinery, while the 82° countersink angle enables seamless flush mounting in countersunk holes for aerodynamic and aesthetic surfaces. The fully threaded design offers maximum grip length for critical joints in structural frameworks, automation systems, and heavy equipment where 70,000 psi tensile strength prevents joint failure under dynamic loads.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNF fine thread (1/4"-28) profile. Features include 2" length, 0.531" head diameter, 0.161" head height, and standard flat head profile with 82° countersink angle. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring unrestricted use in industrial and international markets.