S-94383A130 10-24 ASME B18.3, ASTM A574 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Durability: Crafted from high-grade alloy steel with a black oxide finish to resist corrosion and extend service life in demanding environments.
• Superior Load-Bearing Capacity: With a tensile strength of 140,000 psi and shear strength of 84,000 psi, it reliably handles high-stress applications without failure.
• Precision Thread Fit: Class 3A UNC coarse threads ensure tight, secure fastening with minimal risk of loosening under vibration or dynamic loads.
• Enhanced Grip and Stability: Knurled socket head and hex drive design provide excellent torque transmission and prevent slipping during installation.
• Accurate Shoulder Dimensions: Features a precisely machined 1/4" diameter and 1/2" length shoulder for consistent alignment and reduced component wear.
• Industry Compliance: Meets ASME B18.3 and ASTM A574 standards, ensuring reliable performance and interchangeability in professional assemblies.
• Environmental Responsibility: RoHS 3 and REACH compliant, making it a safe choice for global supply chains and regulated industries.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical challenges in high-performance industrial applications, such as precision machinery, automotive assemblies, and robotic systems. The alloy steel construction combined with a black oxide finish provides excellent resistance to corrosion and wear, reducing maintenance needs in harsh operating conditions. Its Class 3A thread fit and coarse UNC thread type ensure rapid, secure fastening, while the knurled socket head enhances grip for efficient torque application. The precisely toleranced shoulder diameter and length facilitate accurate component alignment, minimizing play and vibration-induced failures. Ideal for shoulder mounting solutions in pivots, bearings, and linkages, this screw delivers reliable performance where dimensional stability and strength are paramount.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit per UNC standards, ensuring tight tolerances for secure assembly. The shoulder features a diameter of 1/4" with a tolerance of -0.004" to -0.002" and a length of 1/2" with a tolerance of -0.005" to 0.005" for precise engineering fits. It conforms to ASME B18.3 and ASTM A574 manufacturing specifications, guaranteeing consistency and reliability. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe usage in various industries.