S-94035A515 4-40 MS51576-3, 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 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-lasting performance.
- Precise alignment and spacing ensured by the 1/8" diameter shoulder with tight tolerance (-0.001" to 0") for accurate component positioning.
- Easy and secure installation with a standard hex drive (5/64") and right-hand UNC coarse threads for efficient assembly.
- Consistent thread quality with Class 2A fit, providing smooth engagement and reducing the risk of cross-threading.
- Broad regulatory compliance meeting MS51576-3, RoHS 3, and REACH standards for safe and reliable use in various industries.
- Durable and wear-resistant design, maintaining integrity under repetitive loads and mechanical stress.
Professional Applications & Engineering Value
This 4-40 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for applications in electronics, machinery, and automotive systems where environmental factors are a concern. The 1/8" shoulder diameter with precise tolerances ensures accurate positioning of components, reducing misalignment and wear. Its hex drive and coarse UNC threads facilitate quick and secure fastening, minimizing assembly time while maintaining high tensile strength and hardness for demanding operational conditions.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit and UNC standards, ensuring dimensional accuracy and compatibility. It meets MS51576-3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and industrial reliability.
