S-92944A139 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications.
• Precise component alignment ensured by the 5/8" shoulder length with tight tolerances, minimizing assembly play and vibration.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, providing reliable load-bearing capacity.
li>Excellent thread engagement and durability from the Class 3A thread fit and UNC coarse threads, resisting stripping and wear.
• Secure and easy installation with a 5/16" hex drive and smooth flat head, allowing for high torque application and a flush finish.
• Consistent hardness and wear resistance with a Rockwell B55 rating, maintaining dimensional stability under stress.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and food processing equipment exposed to moisture or chemicals. The 5/8" shoulder length with controlled tolerances acts as a precise pivot or axle, reducing bushing wear and maintaining concentricity in rotating parts like gears, pulleys, and linkages. The Class 3A thread fit and coarse UNC threads provide robust fastening that withstands vibration and dynamic loads, while the hex drive and flat head design facilitate secure installation in countersunk holes. This combination ensures long-term reliability and reduces maintenance needs in demanding industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 3A thread fit for precise, high-quality engagement. Dimensions include a shoulder diameter of 1/2" (tolerance: -0.004" to -0.002") and shoulder length of 5/8" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances for safe industrial and commercial use.