S-90337A362 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Precise alignment and smooth rotation due to the precisely machined 1/2" shoulder with minimal diameter and length tolerances.
• High mechanical strength and durability supported by a Rockwell B55 hardness and 70,000 psi tensile strength for demanding applications.
• Secure and reliable fastening with a Class 2A thread fit and coarse UNC thread, ensuring consistent engagement and vibration resistance.
• Space-saving and flush installation enabled by the low-profile hex socket head, perfect for compact assemblies.
• Easy installation and removal using a standard 5/64" hex key, reducing assembly time and tooling requirements.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision machinery. The 1/2" precise shoulder length provides a stable bearing surface, minimizing misalignment and wear in rotating components such as gears, pulleys, and linkages. The coarse UNC thread and Class 2A fit offer quick assembly and reliable hold in materials like aluminum and plastics, reducing the risk of thread stripping. With a passivated finish, it resists oxidation and chemical exposure, making it suitable for medical devices, automotive systems, and electronic enclosures where corrosion resistance and long-term performance are paramount. Its low-profile hex socket head allows for sleek designs without compromising on torque application.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder features precise tolerances (diameter: -0.001" to 0", length: 0" to 0.002") to ensure exact fit in assemblies. Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmentally conscious and regulated industrial applications.