S-92381A201 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.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B79 hardness for reliable, high-stress fastening.
- Precise alignment and positioning ensured by the precisely fitted shoulder with controlled diameter and length tolerances.
- Wide compatibility and easy installation with standard 4-40 UNC coarse threads and Class 2A fit for consistent engagement.
- Space-saving and low-profile design featuring an ultra-low socket head, perfect for compact assemblies.
- Regulatory compliance and safety meeting RoHS 3 and REACH standards for use in regulated industries.
- Durable and wear-resistant construction maintains integrity under repetitive loads and mechanical stress.
Professional Applications & Engineering Value
Engineered for precision, these 4-40 UNC shoulder screws in 316 Stainless Steel address critical alignment and corrosion challenges in industrial settings. The precise shoulder fit with minimal tolerances ensures accurate component positioning in assemblies like rotating shafts, bearings, and linkages, reducing wear and misalignment. The passivated finish enhances corrosion resistance, making these screws suitable for marine, chemical, and food processing applications where moisture and chemicals are present. With a Class 2A thread fit and coarse thread spacing, they provide quick assembly and reliable performance in machinery, electronics, and automotive systems, delivering long-term durability and reduced maintenance.
Specification Summary & Compliance
This product adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder features precise diameter and length tolerances (e.g., shoulder diameter: -0.001" to 0") to ensure exact fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety standards for industrial use.
