S-96126A123 4-40 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 316 stainless steel and passivated finish, ideal for harsh environments and extended service life.
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B79 hardness for reliable load-bearing in demanding applications.
- Precise alignment and positioning due to the precise shoulder fit with controlled diameter and length tolerances, reducing assembly errors.
- Easy installation and high torque capability with a 5/64" hex socket drive, allowing secure fastening in confined spaces.
- Consistent thread performance with Class 2A UNC coarse threads ensuring smooth engagement and vibration resistance.
- Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.
- Versatile right-hand thread design for standard assembly processes, enhancing compatibility with existing components.
Professional Applications & Engineering Value
This 4-40 UNC shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and corrosion-induced failures. Constructed from 316 stainless steel with a passivated finish, it excels in corrosive settings like marine, chemical processing, and medical equipment, where material integrity is paramount. The hex socket head and precise shoulder fit enable accurate component positioning in machinery, robotics, and aerospace systems, minimizing wear and ensuring long-term reliability. By combining high tensile strength and standardized UNC threads, it streamlines maintenance and reduces downtime in B2B industrial applications.
Specification Summary & Compliance
The screw adheres to Class 2A thread fit for consistent engagement and ISO-compatible tolerances on shoulder dimensions (diameter: -0.001" to 0", length: 0" to 0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety. Manufacturing follows industry standards for UNC coarse threads and precise shoulder specifications, supporting reliable performance in technical fastening solutions.
