S-90298A219 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise alignment and reduced wear thanks to Class 3A thread fit and fine UNF threading for secure, vibration-resistant fastening
• Enhanced grip and easy manual adjustment from the knurled socket head, compatible with standard 1/8" hex tools
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Accurate component positioning ensured by the 1/4" diameter shoulder with tight diameter tolerance of ±0.001"
• Reliable rotational stability from the 3/4" shoulder length with minimal length tolerance for consistent performance
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 10-32 UNF thread shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for industrial applications in machinery, automotive, and electronics where exposure to moisture or chemicals is common. The Class 3A thread fit and fine UNF threading ensure tight tolerances and minimal backlash, reducing the risk of loosening under vibration. The knurled socket head allows for secure tool engagement and manual handling, while the precisely machined shoulder maintains accurate part spacing and rotational control in pivots, linkages, and bearing mounts, enhancing overall system reliability.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF fine thread with Class 3A fit for high precision, a shoulder diameter of 1/4" with tolerance from -0.001" to 0.001", and a shoulder length of 3/4" with tolerance from -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.