S-94355A217 4-40 x 1/2" ASME B18.3 Set Screws
Set 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 for long-lasting performance in harsh industrial environments
- Precise Class 3A thread fit ensures tighter tolerances and more reliable fastening compared to standard Class 2A threads
- High-strength Rockwell B80 hardness provides excellent resistance to wear and deformation under load
- Compact hex drive design (0.050") allows for easy installation in confined spaces while maintaining high torque capability
- Reliable flat tip configuration creates maximum surface contact for secure positioning of components
- Coarse UNC threading enables faster installation and reduced cross-threading risks in production environments
- Headless construction offers flush mounting capability for applications where protruding fasteners are not feasible
Professional Applications & Engineering Value
This 4-40 UNC Class 3A set screw delivers exceptional engineering value through its 18-8 stainless steel composition and precision manufacturing. The hex drive design provides superior torque transmission while the headless configuration enables seamless integration in space-constrained assemblies. The coarse thread pattern ensures rapid installation in production lines, reducing assembly time while maintaining the Class 3A thread fit for vibration-resistant fastening. Ideal for precision machinery, electronic enclosures, and mechanical linkages, this flat tip set screw solves critical alignment challenges in industrial applications where component slippage can compromise system integrity. The combination of material strength and dimensional precision addresses common failure points in rotating equipment and precision instruments.
Specification Summary & Compliance
This set screw maintains Class 3A thread fit with 4-40 UNC coarse thread specifications and 1/2" length dimensional accuracy. Manufacturing complies with ASME B18.3 standards for set screws, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for industrial components.
