S-92505A624 3/8"-16 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications
• Exceptional durability from Rockwell C45 hardness alloy steel, resisting wear and deformation under high stress
• Corrosion-resistant black oxide finish extends service life in harsh industrial environments
• Secure hex socket drive (3/16") allows for high-torque installation without stripping and reliable maintenance access
• Extended tip design with controlled diameter and length ensures positive engagement and prevents component slippage
• Reliable coarse UNC threads provide quick assembly and superior performance in a wide range of materials
• Headless construction offers a flush finish for space-constrained assemblies and rotating machinery

Professional Applications & Engineering Value

This 3/8"-16 UNC set screw is engineered to solve critical challenges in industrial machinery, power transmission systems, and precision equipment. The black oxide alloy steel construction provides excellent strength-to-weight ratio and corrosion resistance, essential for components exposed to operational stresses and environmental factors. The extended tip and Class 3A thread fit work in tandem to create a deep, secure bite into shafts, collars, and gears, effectively preventing axial movement and loosening under vibration—a common failure point in dynamic assemblies. Its headless, hex socket design is ideal for applications where a protruding fastener is not feasible, ensuring smooth operation and safety in rotating mechanisms. By meeting ASME B18.3 specifications, it guarantees dimensional consistency and performance reliability for engineers and maintenance teams.

Specification Summary & Compliance

This set screw features a 3/8"-16 UNC coarse thread with a Class 3A tolerance for high precision. The extended tip has a diameter of 0.25" (-0.009" to 0" tolerance) and length of 0.099" (-0.005" to 0" tolerance). It is manufactured in accordance with ASME B18.3 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of hazardous substances and suitable for global industrial supply chains.