S-90324A090 10-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional thread reliability with a Class 3A fit and left-hand UNC coarse thread, providing secure fastening in applications requiring reverse rotation resistance.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding load-bearing applications.
• Precision alignment and spacing enabled by the 1/4" shoulder diameter and 5/8" shoulder length with tight tolerances, ensuring accurate component positioning.
• Easy and secure installation with a hex socket drive and knurled head texture, allowing for high-torque application and reduced tool slippage.
• Compliance with global standards, being RoHS 3 and REACH compliant, ensuring safety and environmental responsibility for international projects.
• Durable performance backed by Rockwell B55 hardness, providing excellent wear resistance and long-term operational integrity.

Professional Applications & Engineering Value

This 10-24 UNC left-hand thread shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 stainless steel material ensures reliable performance in corrosive or high-moisture environments, reducing maintenance needs and downtime. The left-hand coarse thread design is particularly valuable in applications where standard right-hand threads may loosen under counter-clockwise rotation, such as in rotating machinery and clamping devices. The hex socket drive and knurled head facilitate secure tool engagement, enabling efficient installation in confined spaces. With its precise shoulder diameter and length, this screw provides accurate axial location and rotational support for components like bearings, gears, and linkages, making it indispensable in automation, aerospace, and precision manufacturing sectors where alignment and vibration resistance are paramount.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 3A thread fit for high precision. The shoulder features a diameter of 1/4" (tolerance: -0.004" to -0.002") and length of 5/8" (tolerance: -0.005" to 0.005") with a standard shoulder fit. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial applications.