S-90337A183 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
• Precise component alignment due to the accurately machined shoulder (3/16" diameter, 1/4" length) with tight tolerances, minimizing assembly play.
• High strength and durability offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load.
• Space-saving low-profile socket head with 3/32" hex drive, allowing installation in confined areas while providing secure torque application.
• Easy and reliable fastening with UNC coarse threads and Class 2A fit, ensuring quick assembly and consistent thread engagement.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.
• Right-hand thread direction for standard installation, facilitating straightforward use in common machinery and equipment.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and space constraints in precision assemblies. The low-profile socket head and 18-8 Stainless Steel construction provide excellent resistance to corrosion and wear, making it ideal for applications in electronics, machinery, and automotive systems where precise shoulder dimensions prevent component misalignment. The passivated finish enhances surface durability, while the Class 2A thread fit and coarse threading ensure secure, vibration-resistant connections in dynamic environments. By combining high tensile strength with regulatory compliance, this screw delivers long-term reliability and reduces maintenance needs in demanding industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a UNC thread and Class 2A thread fit for precise tolerance. Key dimensions include a shoulder diameter of 3/16" (tolerance: -0.001" to 0") and shoulder length of 1/4" (tolerance: 0" to 0.002"), ensuring accurate assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming its suitability for environmentally regulated applications without hazardous substances.