S-94361A353 3/8"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability and Corrosion Resistance with a black oxide finish that protects against rust and wear in harsh industrial environments.
• Superior Tensile Strength of 140,000 psi from alloy steel construction, ensuring reliable performance under high-stress loads.
• Precision Thread Fit with Class 3A UNF fine threads for secure, vibration-resistant fastening and reduced risk of loosening.
• Accurate Alignment and Bearing Surface provided by the 1/2" shoulder diameter with tight tolerances, minimizing component misalignment.
• Easy Installation and Removal using a standard 1/4" hex drive and knurled head for improved grip, even in confined spaces.
• Consistent Hardness and Wear Resistance with a Rockwell C32 hardness, extending service life in repetitive motion applications.
• Compliance with Environmental Regulations, meeting RoHS 3 and REACH standards for safe use in global industrial markets.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining exact component spacing and resisting dynamic loads. The 3/8"-24 UNF Class 3A fine thread ensures a tight, reliable fit that minimizes backlash in machinery, while the black oxide finish enhances corrosion resistance for extended use in humid or abrasive conditions. The 1/2" shoulder diameter acts as a precise pivot or bearing surface, reducing wear on mating parts in applications like robotics, automotive jigs, and conveyor systems. By combining high tensile strength with a knurled socket head for easy tool engagement, this screw delivers consistent performance in automated equipment and other industrial shoulder screw applications where durability and precision are paramount.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit per UNF standards, ensuring high precision and interchangeability. Key dimensional tolerances include a shoulder diameter of -0.004" to -0.002" and shoulder length of -0.005" to 0.005" for reliable assembly. It complies with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial use without hazardous substances.