S-93691A170 8-32 MS51576-7, NASM51576 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh industrial environments.
• Precise alignment and reduced wear thanks to the exact 3/16" shoulder diameter and length with tight tolerances for stable component positioning.
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable use in heavy-duty applications.
• Easy installation and removal with a standard hex socket drive (3/32") and right-hand UNC coarse thread, facilitating quick assembly.
• Consistent thread quality through Class 2A thread fit, minimizing the risk of cross-threading and ensuring secure fastening.
• Compliance with strict standards including MS51576-7, RoHS 3, and REACH, guaranteeing safety and regulatory adherence for global supply chains.
• Smooth head texture for a clean, professional appearance and reduced risk of snagging during operation.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision machinery, such as in automated assembly systems and robotic linkages. The 18-8 stainless steel material combined with a passivated finish provides excellent resistance to corrosion and oxidation, extending service life in demanding conditions. The 3/16" shoulder length and precise diameter tolerances ensure components remain securely positioned, reducing vibration-induced wear and maintenance downtime. With a coarse UNC thread and Class 2A fit, it offers reliable threading in various materials, while the hex socket drive allows for efficient torque application in confined spaces. Ideal for applications requiring high tensile strength and regulatory compliance, this screw delivers consistent performance in industries like aerospace, automotive, and electronics manufacturing.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a shoulder diameter tolerance of -0.001" to 0" with length tolerance of 0" to 0.002". It conforms to MS51576-7 (NASM51576) specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.