S-94328A986 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability – Alloy steel construction with Rockwell C30 hardness provides superior resistance to wear and deformation in demanding applications.
• Exceptional Tensile Strength – 140,000 psi tensile strength ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Precision Thread Fit – Class 3A thread fit offers tighter tolerances for secure, vibration-resistant assemblies in critical machinery.
• Corrosion-Resistant Finish – Black oxide coating protects against rust and extends service life in harsh industrial environments.
• Secure Grip & Easy Installation – Knurled, low-profile socket head with 1/4" hex drive allows for firm tool engagement and straightforward installation in confined spaces.
• Accurate Shoulder Alignment – 1/2" shoulder diameter with controlled tolerances ensures precise component positioning and smooth rotational movement.
• Regulatory Compliance – Meets RoHS 3 and REACH standards, supporting environmentally responsible and globally accepted manufacturing practices.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and corrosion. The alloy steel core, combined with a black oxide finish, provides robust protection against wear and environmental factors, making it ideal for machinery, automotive assemblies, and precision equipment. The Class 3A thread fit and knurled socket head enhance installation accuracy and torque retention, while the standardized shoulder diameter and length facilitate exact alignment in rotating parts or bearing mounts. By integrating high tensile strength with compliant materials, this fastener delivers long-term reliability in industrial applications requiring consistent performance and safety.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 3A thread fit for precision assembly. Dimensions include a 3/8"-16 thread size, 1/2" shoulder diameter (tolerance: -0.004" to -0.002"), and 1/2" shoulder length (tolerance: -0.005" to 0.005"). It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety compliance in industrial use.