S-94035A504 3/8"-16 MS51576-39, NASM51576 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 and passivated finish, ideal for harsh industrial environments.
- Precise alignment and reduced wear thanks to the 1/2" shoulder diameter with tight tolerance for accurate component positioning.
- High strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under load.
- Easy installation and removal using the 1/4" hex socket drive, allowing for secure tool engagement in confined spaces.
- Wide compatibility with UNC coarse thread (3/8"-16) and Class 2A fit, facilitating standard assembly processes.
- Long service life from the smooth head texture and precise shoulder fit, minimizing friction and maintenance needs.
- Compliance with industry standards including MS51576-39, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in machinery. Crafted from 18-8 stainless steel with a passivated finish, it offers exceptional corrosion resistance, making it suitable for applications in automotive, aerospace, and manufacturing equipment where exposure to moisture or chemicals is a concern. The 1/2" shoulder diameter provides a precise bearing surface, reducing stress on threaded sections and ensuring accurate pivoting or rotational movements in assemblies like linkages, gears, and pulleys. With its hex socket drive and coarse thread spacing, it enables quick, secure fastening in high-vibration environments, enhancing operational efficiency and reducing downtime for maintenance.
Specification Summary & Compliance
This shoulder screw adheres to tight dimensional tolerances, including a Class 2A thread fit for reliable engagement and a shoulder diameter tolerance of -0.001" to 0" for precise assembly. It conforms to UNC thread standards and meets MS51576-39 (NASM51576) specifications, ensuring consistent quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and regulated industrial use.
