S-95289A325 1/4"-20 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide finish, extending service life in demanding industrial environments
• Exceptional holding power from Class 3A thread fit ensuring precise, vibration-resistant fastening in critical assemblies
• High-strength performance with Rockwell C45 hardness alloy steel for reliable operation under heavy loads
• Optimized installation access through headless hex drive design, ideal for confined spaces and flush mounting applications
• Enhanced grip and positioning with extended tip design providing superior contact surface for secure component alignment
• Industry-standard compatibility with UNC coarse threads ensuring broad interchangeability across equipment and machinery
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing operations

Professional Applications & Engineering Value

This 1/4-20 UNC set screw delivers critical engineering solutions for industrial applications requiring precise component positioning and secure fastening. The black oxide alloy steel construction provides excellent corrosion resistance while maintaining Rockwell C45 hardness for durability in high-stress environments. The headless hex drive design allows for flush installation in tight spaces, making it ideal for machinery, automotive components, and precision equipment where protruding fasteners are impractical. The extended tip enhances gripping capability on shafts, collars, and pulleys, preventing slippage under vibration and rotational forces. With Class 3A thread fit and coarse thread spacing, this set screw ensures rapid installation and reliable performance in production environments where efficiency and precision are paramount.

Specification Summary & Compliance

This precision set screw features 1/4"-20 UNC coarse threads with Class 3A thread fit tolerance for superior engagement and holding strength. The extended tip measures 0.134" length with diameter of 0.156", manufactured to exacting dimensional standards. The component complies with ASME B18.3 specifications for dimensional accuracy and performance requirements. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring safe use across various industrial sectors while meeting international regulatory requirements.