S-8077A592 5/16"-18 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 added protection against rust and galling.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
• Precise thread engagement with Class 3A thread fit, offering tighter tolerances for secure fastening and vibration resistance.
• Easy installation and removal thanks to the knurled socket head and 3/16" hex drive, improving grip and reducing tool slippage.
• Accurate component alignment with a 2 3/4" shoulder length and standard shoulder fit, minimizing misalignment in assemblies.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 5/16"-18 UNC Black Oxide 316 Stainless Steel Shoulder Screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical stress. The 316 Stainless Steel material provides excellent resistance to corrosive elements, making it suitable for marine, chemical processing, and outdoor equipment. The Black Oxide finish enhances surface hardness and reduces friction, prolonging service life in high-wear scenarios. With a knurled socket head and hex drive, it ensures secure tool engagement, reducing the risk of stripping during assembly. The Class 3A thread fit and precise shoulder dimensions offer reliable positioning in machinery, pivots, and rotating assemblies, minimizing downtime and maintenance costs. Ideal for applications like conveyor systems, automotive jigs, and precision instruments, this shoulder screw delivers consistent performance under heavy loads and harsh conditions.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision and UNC coarse threads for quick assembly. It meets ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and safe for various industrial uses.