S-90318A402 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
• Precise alignment and reduced assembly play due to the exact shoulder diameter and length tolerances, ensuring reliable component positioning.
• High strength and durability with 70,000 psi tensile strength and Rockwell B70 hardness, supporting heavy-duty applications without failure.
• Easy installation in confined spaces using the ultra-low socket hex drive, allowing efficient torque application with standard tools.
• Secure and consistent fastening from the Class 2A UNF fine thread fit, minimizing loosening under vibration and stress.
• Excellent shear resistance with a minimum 35,000 psi shear strength, providing robust performance in dynamic load conditions.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. Constructed from 316 Stainless Steel with a passivated finish, it offers exceptional resistance to corrosion, chemicals, and high-moisture conditions, making it suitable for aerospace, medical devices, and marine equipment. The ultra-low socket head and hex drive facilitate easy installation in tight spaces, while the Class 2A UNF fine threads ensure a secure fit that withstands vibrational forces. The precisely machined shoulder diameter and length provide exact positioning for rotating parts like bearings and pulleys, reducing wear and improving machinery longevity. Ideal for applications demanding high tensile and shear strength, this screw enhances assembly reliability and minimizes maintenance downtime in precision engineering projects.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNF fine thread standards with precise tolerances for shoulder diameter (-0.001" to 0") and length (0" to 0.002"). Manufactured under strict specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.