S-92785A110 4-40 x 1/8" 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 environments
- Maximum holding power achieved through Class 3A thread fit precision for secure, vibration-resistant fastening
- Easy installation in confined spaces with compact hex headless design and 0.050" hex drive
- Enhanced grip and alignment from the 118° cone point that digs into mating surfaces
- Exceptional durability backed by Rockwell B80 hardness rating for repeated use without deformation
- Reliable coarse UNC threading providing quick assembly and strong engagement in various materials
- Full regulatory compliance meeting ASME B18.3 standards and environmental regulations for global applications
Professional Applications & Engineering Value
These precision 4-40 UNC set screws deliver critical engineering solutions where space constraints and vibration resistance are paramount. The 18-8 stainless steel composition provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The hex headless design with 0.050" drive allows installation in tight spaces where traditional screw heads won't fit, while the cone point with 118° angle creates positive locking action that prevents component slippage under stress. Ideal for securing collars, gears, and pulleys in manufacturing equipment, automotive assemblies, and precision instruments, these Class 3A thread fit screws maintain dimensional stability through repeated adjustments. The coarse UNC thread ensures quick installation and reliable performance in both metallic and non-metallic components.
Specification Summary & Compliance
This 4-40 UNC set screw features precise Class 3A thread fit tolerances with 0.112" thread diameter and 1/8" length. Manufactured to ASME B18.3 specifications with right-hand coarse threading. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications worldwide.
