S-93985A307 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 416 stainless steel construction for reliable performance in harsh industrial environments
• Precise component alignment through controlled shoulder diameter tolerance (-0.001" to 0") ensuring perfect fit in mating parts
• High-strength performance with 120,000 psi tensile strength and Rockwell C26 hardness for demanding mechanical applications
• Secure fastening engagement with Class 2A thread fit providing optimal clearance while maintaining vibration resistance
• Easy installation and removal using standard 5/32" hex drive for efficient assembly and maintenance operations
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
• Durable UNC coarse threading offering superior resistance to cross-threading and faster assembly in production environments

Professional Applications & Engineering Value

This 1/4-20 UNC shoulder screw delivers critical engineering solutions for precision machinery and industrial equipment. The 416 stainless steel construction provides excellent corrosion resistance while maintaining the high tensile strength required for rotating assemblies and pivot points. The precisely controlled 3/8" shoulder diameter with tight tolerance ensures accurate component alignment in bearings, gears, and linkages, eliminating the need for additional spacing components. The Class 2A thread fit combined with coarse UNC threading enables rapid assembly while preventing vibration-induced loosening in high-cycle applications. The socket head design with 5/32" hex drive allows for compact installation in space-constrained environments, making it ideal for automation equipment, conveyor systems, and precision manufacturing machinery where reliability and repeatable performance are paramount.

Specification Summary & Compliance

This precision shoulder screw features 1/4"-20 UNC Class 2A threads with right-hand direction and coarse spacing, ensuring compatibility with standard industrial components. The shoulder maintains precise dimensional control with diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002". Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, this fastener is suitable for global industrial applications requiring environmental regulation adherence. The mechanical properties include 120,000 psi tensile strength and Rockwell C26 hardness, providing reliable performance in demanding mechanical assemblies.