S-92012A304 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding applications
• Superior corrosion resistance through black oxide finish, extending service life in harsh industrial environments
• Precise shoulder fit with minimal diameter tolerance (-0.001" to 0") ensuring accurate alignment and reduced assembly vibration
• Easy installation and removal with 5/32" hex drive socket head design for secure tool engagement and torque application
• Reliable thread performance with Class 2A UNC coarse threads providing consistent fastening and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Versatile industrial application with right-hand thread direction and standard socket head profile compatible with common assembly tools

Professional Applications & Engineering Value

This precision shoulder screw delivers exceptional engineering value in industrial applications where alignment accuracy and vibration resistance are critical. The alloy steel construction with black oxide finish provides superior corrosion protection while maintaining the 140,000 psi tensile strength necessary for high-stress environments. The precisely machined shoulder diameter with tight tolerances ensures perfect component alignment in machinery, rotating assemblies, and precision equipment. The UNC coarse threads with Class 2A fit offer reliable fastening in applications subject to vibration, while the socket head design with 5/32" hex drive allows for secure installation in confined spaces. These shoulder screws solve common engineering challenges by providing stable pivots, precise spacers, and reliable rotational elements in automotive, aerospace, and manufacturing equipment.

Specification Summary & Compliance

This 1/4"-20 UNC shoulder screw features Class 2A thread fit with precise shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002". Manufactured from alloy steel with black oxide finish, the screw complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The product meets industrial standards for UNC coarse thread specifications and is engineered for applications requiring precise shoulder fit and high tensile strength performance.