S-91829A203 8-32 MS51575-8, NASM51575 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term performance under high stress.
- Precise alignment and smooth rotation enabled by the smooth, 3/16" diameter shoulder with tight tolerances, reducing wear in moving assemblies.
- Easy installation and secure fastening with the 8-32 UNC coarse thread and Class 2A fit, ensuring quick assembly and vibration resistance.
- Versatile socket/slotted drive compatibility providing flexibility for various tools and access in confined spaces.
- Guaranteed compliance and reliability meeting MS51575-8, RoHS 3, and REACH standards for safe, regulated use in global markets.
- Optimized for right-hand, coarse-thread applications delivering efficient load distribution and durability in dynamic mechanical systems.
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component wear. The UNC coarse thread and Class 2A fit ensure secure fastening with minimal backlash, while the precisely machined shoulder provides a stable bearing surface for gears, pulleys, and linkages. The passivated finish enhances corrosion resistance, making it suitable for automotive, aerospace, and electronic assemblies exposed to moisture or chemicals. With a 70,000 psi tensile strength and compliance with MS51575-8, it supports high-load applications, reducing maintenance needs and improving operational lifespan in industrial settings.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit and UNC coarse thread standards, with precise shoulder diameter (3/16") and length (1/4") tolerances. It meets MS51575-8 (NASM51575) specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for global engineering projects.
