S-92196A657 1/4"-28 x 5/16" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
• High tensile strength of 70,000 psi for demanding applications requiring exceptional load-bearing capacity
• Optimal hardness at Rockwell B70 providing excellent wear resistance and durability
• Fine thread design (1/4"-28 UNF) delivering superior holding power in thin materials
• Standard hex drive compatibility with 3/16" drive size for easy installation and removal
• Full thread coverage along the 5/16" length for maximum grip and uniform stress distribution

Professional Applications & Engineering Value

These 18-8 stainless steel socket head cap screws are engineered to address critical industrial challenges where corrosion resistance and precision fastening are paramount. The Class 3A thread fit with UNF fine threads ensures minimal backlash and superior vibration resistance in machinery, automotive, and aerospace applications. The socket head design with 3/16" hex drive allows for high-torque installation in confined spaces, while the Rockwell B70 hardness maintains thread integrity under repeated assembly cycles. Ideal for precision equipment, marine environments, and chemical processing applications where reliable performance and regulatory compliance are essential.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision tolerance. Features 1/4"-28 UNF fine threads with right-hand thread direction and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. All dimensions conform to inch system measurements with 5/16" length, 3/8" head diameter, and 1/4" head height.