S-90807A136 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Durability: Made from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength to withstand high-stress applications without failure.
• Precise Alignment & Stability: Features a 1" shoulder length with tight tolerances for accurate component positioning and reduced wear in assemblies.
• Superior Corrosion Resistance: Black oxide finish provides reliable protection against rust and oxidation in harsh industrial environments.
• Easy Installation & Removal: Hex drive (3/16") and knurled head offer secure grip and efficient torque application for quick maintenance.
• High Thread Reliability: Class 3A thread fit with 3/8"-16 UNC coarse threads ensures secure fastening and vibration resistance in dynamic settings.
• Broad Compliance: Meets RoHS 3 and REACH regulations, making it suitable for global industrial and electronic applications.
• Versatile Design: Right-hand thread direction and standard socket head profile enable compatibility with common tools and machinery.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The alloy steel construction combined with black oxide finish delivers robust resistance to corrosion and mechanical stress, ideal for environments exposed to moisture, chemicals, or constant motion. The Class 3A thread fit and coarse thread spacing provide superior holding power, minimizing loosening under vibration—common in conveyors, motor mounts, and robotic arms. The integrated shoulder diameter of 3/8" acts as a precise pivot or spacer, ensuring accurate alignment of components like bearings, gears, and linkages without additional bushings. By offering high tensile strength and compliance with international standards, this shoulder screw reduces maintenance downtime and enhances the longevity of industrial assemblies.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a thread size of 3/8"-16, thread length of 1/2", shoulder diameter of 3/8" (tolerance: -0.004" to -0.002"), and shoulder length of 1" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and suitability for regulated industries.