S-94035A307 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise alignment and reduced wear due to the smooth 3/8" shoulder diameter with tight tolerances for accurate component positioning
• High-strength fastening offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Easy installation and removal with a standard hex socket head and 5/32" drive size for secure tool engagement
• Consistent thread engagement provided by UNC coarse threads with Class 2A fit, ensuring vibration resistance and secure assembly
• Broad industrial compliance meeting RoHS 3 and REACH regulations for safe use in regulated sectors
• Versatile right-hand threading designed for standard assembly processes and compatibility with common UNC nuts and components

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision instruments. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it ideal for environments exposed to moisture, chemicals, or temperature variations. The 3/8" shoulder diameter with precise tolerances ensures minimal play and accurate positioning of moving parts, reducing wear and preventing misalignment in assemblies like rotating shafts, linkages, and bearing mounts. The UNC coarse threads and Class 2A fit facilitate quick installation while maintaining strong, vibration-resistant connections. With a socket head design and hex drive, it allows for efficient tightening in confined spaces, enhancing productivity in manufacturing and maintenance operations.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a 1/4"-20 thread size and Class 2A thread fit for consistent dimensional accuracy. The shoulder features a diameter of 3/8" with a tolerance of -0.001" to 0" and a length of 5/16" with a tolerance of 0" to 0.002", ensuring precise shoulder fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial applications requiring environmental and safety standards.