S-90128A121 6-32 x 3/16" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating for extended service life in harsh industrial environments
• Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress applications
• Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal play
• Rockwell C37 hardness maintains structural integrity and prevents stripping during installation
• Hex socket drive design allows for high-torque installation in confined spaces
• Coarse UNC threading enables quick assembly and disassembly while resisting cross-threading
• Full compliance with industry standards including ASTM A574 for consistent quality and performance

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated alloy steel socket head cap screws deliver exceptional reliability in machinery assembly, automotive components, and precision equipment. The 6-32 UNC coarse thread configuration combined with Class 3A thread fit ensures rapid installation while maintaining vibration resistance in high-stress environments. The hex socket drive facilitates secure tool engagement, preventing cam-out during high-torque applications. With 170,000 PSI tensile strength and Rockwell C37 hardness, these fasteners withstand extreme mechanical loads while the zinc plating provides essential corrosion protection for extended service life in challenging operating conditions.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit tolerances with UNC coarse threading and 3/16" length dimensions. Fully compliant with ASTM A574 specification for alloy steel socket head cap screws. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards for restricted substances.