S-8077A464 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Precise component alignment through Class 3A thread fit and standard shoulder fit, ensuring reliable assembly and reduced vibration
• Enhanced durability and wear resistance with black oxide finish, providing added protection against rust and surface degradation
• High mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure, non-slip installation thanks to the knurled socket head and hex drive, allowing for firm tool grip and consistent torque application
• Broad regulatory compliance meeting ASME B18.3 specifications, RoHS 3, and REACH standards for safe, global use
• Optimized for repetitive use with Rockwell B79 hardness, maintaining thread integrity and shoulder dimensions under stress

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery, automation systems, and precision equipment. The 316 stainless steel material offers exceptional resistance to corrosive agents, making it suitable for marine, chemical processing, and outdoor applications. The black oxide finish not only enhances aesthetic uniformity but also minimizes friction and galling during installation. With a coarse UNC thread and Class 3A thread fit, it ensures quick assembly and reliable retention in high-vibration environments, reducing maintenance downtime. The standard shoulder diameter and length provide accurate positioning for rotating parts, bushings, and linkages, supporting smooth operational performance and extended service life in heavy-duty industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for precise, interference-free assembly, with thread size 10-24 UNC and coarse spacing. Shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and shoulder length is 15/32" with a tolerance of -0.005" to 0.005". Manufacturing and quality meet ASME B18.3 specifications, and the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.