S-91829A204 8-32 MS51575-10, NASM51575 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments.
• Precise alignment and positioning ensured by a smooth 3/16" diameter shoulder with tight tolerance for minimal play.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty applications.
• Easy installation and removal using the standard socket head design, compatible with common tools.
• Wide compatibility with UNC coarse threads (8-32) and Class 2A fit for standard industrial assemblies.
• Long-term reliability backed by compliance with MS51575, RoHS 3, and REACH standards for safety and durability.
• Durable performance in demanding conditions due to the robust material and precise shoulder length tolerance.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and mechanical stability challenges in industrial settings. Made from 18-8 Stainless Steel with a passivated finish, it offers excellent corrosion resistance, reducing maintenance in humid or chemical-exposed environments. The 3/16" shoulder length with precise fit tolerance ensures accurate component positioning, preventing misalignment in machinery, pivots, and rotating assemblies. Its socket head design allows for easy torque application, while the UNC coarse thread and Class 2A fit provide secure fastening in high-vibration applications. Ideal for use in automotive, aerospace, and precision equipment, this screw delivers consistent performance where reliability and high tensile strength (70,000 psi) are paramount.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit for standard UNC 8-32 coarse threading, ensuring dimensional accuracy and ease of assembly. The shoulder diameter and length maintain tight tolerances (e.g., shoulder diameter: -0.001" to 0", shoulder length: 0" to 0.002") for precise fit. It complies with MS51575-10 (NASM51575) specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming environmental and safety adherence for industrial use.