S-94105A313 5-40 x 1/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, secure fastening in demanding applications
• Enhanced corrosion resistance from the black-oxide finish, extending service life in industrial environments
• High-strength durability provided by alloy steel with Rockwell C45 hardness, resisting wear and deformation
• Easy installation and removal with the 1/16" hex drive, allowing for efficient assembly and maintenance
• Reliable positioning using the flat tip design, which minimizes component damage during securement
• Broad compatibility with coarse (UNC) 5-40 threads, suitable for a wide range of machinery and equipment
• Confident compliance meeting ASME B18.3, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

This 5-40 UNC set screw is engineered to address critical challenges in precision assembly and machinery. The black-oxide alloy steel construction offers excellent resistance to rust and wear, making it ideal for applications in automotive, aerospace, and industrial equipment where exposure to harsh conditions is common. The headless design with a hex drive allows for flush mounting in tight spaces, preventing interference and ensuring a clean profile. With a Class 3A thread fit and coarse thread spacing, it provides reliable, vibration-resistant clamping force, reducing the risk of loosening in high-stress environments. The flat tip minimizes marring on shafts and components, preserving integrity during adjustments. This screw is a trusted solution for securing collars, gears, and pulleys, enhancing overall system reliability and longevity.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and consistent performance. It conforms to ASME B18.3 specifications and is manufactured from alloy steel with a black-oxide surface treatment. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety guidelines for industrial use.