S-94355A130 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, ideal for harsh industrial environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- High mechanical strength from Rockwell B80 hardness, providing excellent durability under load
- Secure installation with hex drive design allowing high torque application without head interference
- Space-saving headless profile enabling flush mounting in confined spaces and rotating machinery
- Industry-standard compliance with ASME B18.3 specifications for guaranteed interchangeability
- Environmental responsibility through RoHS 3 and REACH compliance for sustainable manufacturing
Professional Applications & Engineering Value
This 4-40 UNC set screw delivers critical engineering solutions where space constraints and corrosion resistance are paramount. The 18-8 stainless steel construction combined with Class 3A thread fit provides exceptional resistance to loosening under vibration, making it ideal for precision equipment, machinery components, and electronic enclosures. The headless design with hex drive allows flush mounting in rotating assemblies while maintaining high clamp force. With coarse UNC threading and flat tip configuration, it ensures positive seating on shafts and components without damaging surfaces. These features make it particularly valuable in manufacturing, automation, and aerospace applications where reliability and dimensional accuracy are non-negotiable.
Specification Summary & Compliance
This set screw maintains Class 3A thread tolerances per UNC standards with 4-40 thread size and coarse thread spacing. Manufacturing conforms to ASME B18.3 specifications ensuring dimensional consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. Additional specifications include 0.050" hex drive, 1/8" length, and right-hand thread direction for standard industrial applications.
