S-8077A557 5/8"-11 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Precise alignment and reduced wear thanks to Class 3A thread fit and standard shoulder fit for consistent assembly performance
• High-strength reliability with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
• Secure installation and removal using the 3/8" hex drive and knurled head for enhanced grip and torque application
• Dimensional stability ensured by tight shoulder diameter and length tolerances for accurate positioning in assemblies
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety
• Durable performance with Rockwell B79 hardness and coarse UNC threads for long-lasting use in high-stress conditions

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and component wear. Made from 316 stainless steel with a black oxide finish, it provides exceptional resistance to corrosion and chemicals, making it suitable for machinery, automotive, and marine applications. The Class 3A thread fit and precise shoulder dimensions ensure accurate alignment in assemblies, reducing vibration and extending equipment life. With its 70,000 psi tensile strength and coarse thread design, it offers reliable fastening in high-load scenarios, while the socket head and knurled texture facilitate easy installation in confined spaces. Ideal for precision shoulder bolts in rotating parts or fixtures, this component enhances operational efficiency and minimizes downtime.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit and UNC thread standards with precise tolerances for shoulder diameter (-0.004" to -0.002") and length (-0.005" to 0.005"). It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry reliability.