S-8077A555 5/8"-11 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
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance under heavy loads
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable operation in demanding applications
• Precise thread engagement with Class 3A UNC coarse threads, offering secure fastening and vibration resistance
• Easy installation and removal thanks to the knurled socket head and 3/8" hex drive, reducing assembly time and tool slippage
• Accurate shoulder positioning with controlled diameter and length tolerances, maintaining alignment in machinery and rotating assemblies
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and component wear. The black oxide finish enhances corrosion resistance, making it suitable for applications in marine, chemical processing, and outdoor equipment where moisture and chemicals are prevalent. The UNC coarse threads and Class 3A thread fit provide robust, vibration-resistant connections, reducing the risk of loosening in high-stress environments like automotive assemblies and heavy machinery. With a knurled socket head and precise shoulder dimensions, it ensures easy installation and accurate positioning in rotating parts, pulleys, and linkages, minimizing downtime and maintenance costs for B2B clients.

Specification Summary & Compliance

This shoulder screw features a 5/8"-11 UNC thread with Class 3A fit for high precision, and shoulder dimensions including a diameter of 3/4" (tolerance: -0.004" to -0.002") and length of 3/8" (tolerance: -0.005" to 0.005"). It complies with ASME B18.3 specifications for dimensional accuracy and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring it is free from hazardous substances and suitable for global industrial use.