S-93985A301 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Precision alignment capability with exact 5/16" shoulder diameter and 1/4" shoulder length for secure component positioning
• Exceptional corrosion resistance through 416 Stainless Steel construction for long service life in demanding environments
• High-strength performance with 120,000 psi tensile strength and Rockwell C26 hardness for heavy-duty applications
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
• Easy installation and removal using standard 5/32" hex drive for efficient maintenance operations
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Smooth shoulder surface providing minimal friction during assembly and disassembly processes

Professional Applications & Engineering Value

This 416 Stainless Steel shoulder screw delivers critical engineering solutions where precise component alignment and rotational stability are paramount. The precisely machined 5/16" shoulder diameter with tight tolerance control provides exact locating surfaces for bearings, gears, and linkages, eliminating misalignment issues in automated machinery and precision equipment. The 1/4"-20 UNC coarse thread with Class 2A fit ensures rapid assembly while maintaining vibration resistance in high-cycle applications. The socket head design with hex drive accommodates confined spaces while the right-hand thread direction follows industry standards for intuitive installation. Engineered for industrial environments, this shoulder screw maintains dimensional stability under load while the stainless steel composition resists corrosion in manufacturing, automotive, and material handling applications.

Specification Summary & Compliance

This precision shoulder screw features Class 2A thread fit per UNC standards with exact shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002". Manufactured from 416 Stainless Steel with Rockwell C26 hardness and 120,000 psi tensile strength, the component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety and restricted substances. The UNC coarse thread profile and precise shoulder dimensions ensure consistent performance across industrial applications requiring reliable alignment and fastening solutions.