S-90337A512 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh environments
• Exceptional strength and durability offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Precise shoulder fit with tight diameter tolerance (-0.001" to 0") and length tolerance (0" to 0.002") ensuring accurate alignment and reduced assembly errors
• Easy installation and space-saving design thanks to the low-profile hex socket head and 1/4" drive size for efficient torque application in confined spaces
• Wide compatibility with UNC coarse threads and Class 2A fit for secure fastening in various industrial assemblies
• Compliance with environmental standards including RoHS 3 and REACH, making it safe for global industrial use
• Right-hand thread direction for standard, intuitive installation and removal processes

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and wear issues in precision machinery, such as in robotic arms, conveyor systems, and pivoting mechanisms. The 1/2" shoulder diameter with precise tolerances acts as a reliable bearing surface, minimizing component wobble and extending service life by reducing metal-on-metal contact. Made from 18-8 stainless steel with a passivated finish, it resists corrosion from moisture and chemicals, ensuring consistent performance in demanding environments like manufacturing and automation. The hex socket head with low profile allows for compact designs and easy access in tight spaces, while the coarse thread and Class 2A fit provide quick, secure fastening. Ideal for applications requiring repeated adjustments, this screw delivers high tensile strength and hardness to withstand dynamic loads without failure.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with Class 2A fit, ensuring dimensional accuracy and interchangeability. Key specifications include a 3/8"-16 thread size, 5/8" thread length, and precise shoulder dimensions (1/2" diameter with -0.001" to 0" tolerance; 7/8" length with 0" to 0.002" tolerance). Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting safe and sustainable industrial operations.