S-93985A305 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Made from 416 stainless steel with 120,000 psi tensile strength for reliable performance in demanding industrial environments
• Precision Alignment - Features a 5/16" shoulder diameter with precise fit tolerance (-0.001" to 0") for accurate component positioning and reduced vibration
• Superior Thread Performance - Class 2A thread fit ensures consistent engagement and reliable fastening in 1/4"-20 UNC coarse thread applications
• Optimized Drive Efficiency - Hex socket head with 5/32" drive size provides secure tool engagement and prevents stripping during installation
• Corrosion Resistance - 416 stainless steel construction with Rockwell C26 hardness offers excellent wear resistance and longevity
• Regulatory Compliance - Meets RoHS 3 and REACH standards, ensuring environmental responsibility and global market acceptance
• Versatile Installation - Right-hand thread direction with 7/16" thread length accommodates various assembly requirements and thicknesses

Professional Applications & Engineering Value

This precision shoulder screw addresses critical alignment challenges in industrial machinery and precision equipment. The 416 stainless steel construction provides exceptional strength and corrosion resistance, while the precisely machined 5/16" shoulder diameter with tight tolerance control ensures accurate component positioning in rotating assemblies, pivoting mechanisms, and bearing applications. The 1/4-20 UNC coarse threads with Class 2A fit deliver reliable fastening performance, reducing the risk of thread stripping in high-vibration environments. The socket head design with hex drive allows for compact installation in space-constrained applications, making it ideal for precision instruments, automation equipment, and mechanical assemblies where dimensional accuracy and repeatability are paramount.

Specification Summary & Compliance

This shoulder screw features Class 2A thread fit with UNC coarse thread standards, maintaining precise dimensional accuracy across all critical surfaces. The shoulder diameter maintains tight tolerances (-0.001" to 0") while the shoulder length tolerance is controlled within 0" to 0.002" for consistent performance. Manufactured to exacting standards, this component is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international regulatory requirements for hazardous substance restrictions and chemical safety protocols in industrial applications.