S-8077A455 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel and Black Oxide finish, ideal for harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and stress
• Precise Class 3A thread fit guarantees secure fastening and vibration resistance in critical assemblies
• Knurled socket head design provides enhanced grip for easy installation and removal with standard hex tools
• Durable shoulder section with tight diameter and length tolerances for accurate alignment in rotating parts
• Compliance with RoHS 3 and REACH ensures environmental safety and regulatory adherence for global applications
• Coarse UNC threading enables quick assembly and reduced cross-threading risks in high-volume operations

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The Black Oxide finish enhances durability in moist or chemical-exposed settings, while the 10-24 UNC coarse thread with Class 3A fit ensures rapid, secure fastening in machinery, automotive, and aerospace components. The knurled socket head allows for efficient torque application, reducing installation time and tool wear. With a Rockwell B79 hardness and 35,000 psi shear strength, it supports high-stress applications like pivots, bearings, and guides, minimizing downtime and maintenance costs in precision engineering systems.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 standards, featuring a Class 3A thread fit for precise tolerances and a shoulder diameter of 1/4" with tight tolerances (-0.004" to -0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The UNC coarse thread and right-hand direction provide consistent performance in industrial fastening applications.