S-96125A304 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 and durability from Nickel Alloy construction, ideal for harsh industrial environments.
- Precise alignment and reduced component wear with a 1/8" shoulder diameter and standard shoulder fit for stable assembly.
- High load-bearing capability with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
- Secure, non-slip installation thanks to the knurled socket head and 5/64" hex drive for reliable torque transmission.
- Consistent thread engagement and vibration resistance with UNC coarse threads and Class 3A fit for tight tolerances.
- Enhanced mechanical stability from Rockwell B60 hardness, ensuring long-term performance under stress.
- Compliance with global environmental standards including RoHS 3 and REACH, supporting sustainable procurement.
Professional Applications & Engineering Value
This 4-40 UNC Class 3A shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component fatigue. Made from Nickel Alloy, it offers excellent resistance to corrosion and high temperatures, making it suitable for aerospace, automotive, and electronics industries. The 1/8" shoulder diameter and 5/16" shoulder length provide accurate positioning for rotating parts, reducing wear and maintenance costs. With a knurled socket head and right-hand UNC coarse threads, it ensures easy installation and reliable performance in high-vibration environments, supporting efficient assembly and long service life.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensions include a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005", ensuring high accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) with exemption 6(c) and REACH (EC 1907/2006) compliance, supporting safe and regulated use in industrial applications.
