S-90044A189 7/16"-20 x 5" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal play, enhancing joint integrity.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread form and drive integrity through repeated use.
• Convenient 3/8" hex drive allows for high-torque installation with standard tools, speeding up assembly and disassembly processes.
• Fine UNF thread design provides improved load distribution and better resistance to loosening under dynamic stresses.
• Partially threaded shank enables precise clamping force application where full threading isn't required, optimizing fastener performance.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional performance where standard fasteners fail. The combination of 170,000 psi tensile strength and Rockwell C37 hardness makes them ideal for high-stress environments including machinery assembly, automotive systems, and construction equipment. The 7/16"-20 UNF fine threads with Class 3A fit provide superior vibration resistance, critical for applications subject to dynamic loading or thermal cycling. The black-oxide surface treatment offers reliable corrosion protection without compromising dimensional accuracy, while the 3/8" hex drive accommodates high installation torques without stripping. These socket head cap screws solve common engineering challenges by maintaining clamp load integrity in demanding conditions where joint reliability is paramount.

Specification Summary & Compliance

This 5" length socket head cap screw features 7/16"-20 UNF fine threads with Class 3A thread fit precision and minimum thread length of 1-3/8". Manufactured to ASTM A574 specification for socket head cap screws, ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring restricted substance compliance.