S-94496A290 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Tensile and Shear Strength: Withstands up to 70,000 psi tensile and 35,000 psi shear loads, ensuring reliable performance in high-stress industrial environments.
• Precision Thread Fit: Class 2A thread fit guarantees consistent engagement and reduces the risk of cross-threading during assembly, improving installation efficiency.
• Corrosion-Resistant Zinc Plating: Steel material with zinc plating provides enhanced durability against rust and wear, extending service life in harsh conditions.
• Sturdy External Hex Head Design: Smooth hex head allows for easy torque application with standard tools, facilitating quick and secure fastening.
• Accurate Shoulder Dimensions: 1/2" shoulder diameter with tight tolerances ensures precise alignment and rotational stability in machinery and pivoting applications.
• Coarse UNC Threading: 3/8"-16 UNC coarse threads enable rapid assembly and disassembly, ideal for maintenance-heavy equipment.
• Compliance with Global Standards: Meets RoHS 3 and REACH regulations, supporting sustainable and safe manufacturing practices without lead concerns.

Professional Applications & Engineering Value

This shoulder screw is engineered to address common challenges in industrial fastening, such as misalignment and vibration-induced loosening. The steel construction with Rockwell B80 hardness ensures it maintains integrity under repetitive loads, while the zinc plated finish resists corrosion in humid or abrasive settings. The 1/2" shoulder diameter and 1-9/16" shoulder length provide a stable bearing surface for components like gears, pulleys, and linkages, reducing wear and enabling smooth rotation. With 3/4" thread length and Class 2A thread fit, it offers precise engagement in UNC threaded assemblies, minimizing downtime in automotive, aerospace, and machinery applications where reliability is critical.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit standards for consistent dimensional accuracy, with a shoulder diameter tolerance of -0.004" to 0" and shoulder length tolerance of -0.005" to 0.005". It conforms to RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant, ensuring environmental and safety regulations are met for global supply chains.