S-90117A114 2-56 x 1/2" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws
Alloy Steel Wire-Lockable Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating, extending service life in demanding 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
- Standard hex socket drive allows for easy installation with common tools while preventing stripping
- Coarse UNC threading enables quick assembly and disassembly in time-sensitive operations
- Rockwell C37 hardness maintains structural integrity through repeated use and high torque applications
- Full compliance with industry standards ensures consistent quality and interchangeability across applications
Professional Applications & Engineering Value
Engineered for precision industrial fastening, these socket head cap screws with 2-56 UNC coarse threading provide optimal performance in machinery, equipment assembly, and automotive applications where vibration resistance is critical. The black-oxide alloy steel construction offers enhanced corrosion protection while maintaining the 170,000 psi tensile strength necessary for high-stress connections. The hex drive design ensures secure tool engagement during installation, reducing the risk of fastener damage in confined spaces. These Class 3A thread fit fasteners deliver reliable, repeatable performance in manufacturing environments requiring precise tolerance control and durable fastening solutions.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit tolerances for precision engagement. Features UNC coarse thread spacing with right-hand thread direction and fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The black-oxide surface treatment provides additional corrosion protection while maintaining dimensional stability across the 1/2" length and 9/64" head diameter.
