S-91264A130 10-24 ASME B18.3, ASTM A574 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Integrated nylon pellet thread locker maintains secure fastening in high-vibration environments from -50° to 250° F
• Precision alignment capability: 2" shoulder length with tight diameter tolerance provides accurate component positioning and rotational stability
• Exceptional load capacity: 140,000 psi tensile strength and 84,000 psi shear strength withstand extreme mechanical stresses in heavy-duty applications
• Corrosion-resistant performance: Black oxide finish on alloy steel substrate enhances durability in demanding industrial environments
• Secure installation control: Knurled hex socket head design prevents tool slippage during high-torque assembly operations
• Industry-standard compatibility: Class 3A thread fit and UNC coarse thread profile ensure reliable engagement with standard mating components
• Regulatory compliance assurance: Meets ASME B18.3 and ASTM A574 specifications while being RoHS 3 and REACH compliant for global applications

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw delivers critical engineering solutions for precision assembly challenges where component alignment and vibration resistance are paramount. The 2" shoulder length with controlled diameter tolerance serves as an exact locating feature in machinery, automation systems, and rotating assemblies, eliminating the need for additional alignment components. The alloy steel construction with black oxide finish provides superior corrosion resistance while maintaining the 140,000 psi tensile strength required for high-stress applications. The integrated nylon pellet thread locker effectively counters vibrational loosening in equipment operating across extreme temperature ranges (-50° to 250° F), making it ideal for automotive, aerospace, and industrial machinery where reliability cannot be compromised. The hex socket drive with knurled head texture ensures secure tool engagement during installation, preventing damage to critical assembly components.

Specification Summary & Compliance

This precision shoulder screw features Class 3A thread fit with UNC coarse thread profile (10-24 thread size) and maintains exacting dimensional control with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, the fastener delivers consistent performance across industrial applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while meeting global manufacturing standards.