S-94115A107 4-40 x 3/8" 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
- Vibration-resistant performance with durable Nylon 6/6 plastic tip that prevents loosening under dynamic loads
- Superior corrosion protection through Black-Oxide finish on alloy steel, extending service life in harsh environments
- Precise thread engagement with Class 3A fit ensuring reliable fastening and consistent clamping force
- Wide temperature tolerance from -50° to 250° F maintains tip integrity across industrial applications
- Optimized drive efficiency with 0.050" hex drive providing secure tool engagement in confined spaces
- Enhanced material strength from Rockwell C28 hardness alloy steel resisting deformation under high torque
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global supply chain integration
Professional Applications & Engineering Value
This 4-40 UNC set screw delivers critical vibration resistance in precision assemblies where traditional fasteners fail. The Nylon 6/6 plastic tip creates consistent friction locking while protecting sensitive shaft surfaces from galling. Engineered with Black-Oxide alloy steel and Class 3A thread fit, it maintains dimensional stability in automated production environments. The coarse UNC thread spacing enables rapid installation in electronics, machinery, and automotive components where headless design maximizes space utilization. With hex drive compatibility and extended temperature range, it solves alignment and thermal cycling challenges in industrial equipment maintenance.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit ensuring precision tolerance control. The UNC coarse thread profile provides optimal engagement in most materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety standards. Right-hand thread direction with 0.112" thread diameter and 3/8" length maintains interchangeability with industry-standard components.
