S-8077A125 3/4"-10 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 and shear strength (70,000 psi tensile, 35,000 psi min shear) ensures reliable performance under heavy loads.
• Precision Class 3A thread fit provides secure, vibration-resistant fastening in critical assemblies.
• Knurled socket head with 1/2" hex drive allows for easy installation and removal, even in tight spaces.
• Durable Rockwell B79 hardness maintains structural integrity and resists wear over extended use.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards.
• Coarse UNC thread design enables quick assembly and disassembly, reducing downtime in maintenance.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with a black oxide finish is engineered to address common industrial challenges such as corrosion, high stress, and precise alignment needs. The 3/4"-10 UNC coarse thread and Class 3A fit ensure tight, reliable connections in machinery, automotive, and aerospace applications, minimizing loosening from vibrations. The knurled socket head enhances grip for efficient installation, while the robust shoulder diameter and length provide stable support for rotating parts or bushings. By combining high tensile strength and corrosion resistance, it reduces maintenance frequency and extends equipment life in demanding environments.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a Class 3A thread fit per UNC standards, shoulder diameter tolerance of -0.004" to -0.002", and length tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and reliable use in various industrial settings.