S-92012A302 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 140,000 psi tensile strength for reliable performance in demanding applications
• Precision shoulder fit with 5/16" diameter and tight ±0.002" tolerance ensures accurate alignment and reduced assembly vibration
• Superior corrosion resistance through black oxide finish, extending service life in harsh industrial environments
• Optimized torque transmission with 5/32" hex socket drive design preventing cam-out and tool slippage
• Consistent thread engagement with Class 2A UNC coarse threads providing secure fastening and easy installation
• Enhanced durability from Rockwell C32 hardness alloy steel construction resisting wear and deformation
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This alloy steel shoulder screw with black oxide finish delivers critical engineering solutions for precision machinery and industrial equipment. The precisely machined 5/16" shoulder diameter with minimal tolerance variation serves as an exact locating diameter for rotating components, eliminating the need for additional bushings or spacers. The 1/4"-20 UNC coarse thread with Class 2A fit ensures rapid assembly while maintaining vibration resistance in high-stress applications. The socket head design with 5/32" hex drive allows for compact installation in confined spaces common in automation systems, conveyor assemblies, and precision manufacturing equipment. This combination of precision shoulder fit and high tensile strength addresses common challenges of component misalignment, excessive wear, and fastener failure in demanding industrial environments.

Specification Summary & Compliance

This precision shoulder screw features Class 2A thread fit per UNC standards with precise shoulder dimensions (5/16" diameter, 5/16" length) maintaining tight tolerances for engineering applications. Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength, the fastener meets industrial performance requirements. The black oxide surface treatment provides enhanced corrosion protection. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.