S-92695A624 4-40 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Precise Class 3A thread fit ensures reliable, vibration-resistant fastening with minimal backlash
• High-strength alloy steel construction with Rockwell C45 hardness provides excellent wear resistance and durability
• Hex drive design (0.050") allows for high-torque installation in confined spaces without head interference
• 90° cone point tip creates positive seating and prevents component slippage during operation
• Coarse UNC threading (4-40) enables quick assembly and disassembly while maintaining secure holding power
• Headless configuration permits flush mounting where protruding fasteners aren't feasible

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in precision assemblies where space constraints and vibration resistance are paramount. The 4-40 UNC coarse thread with Class 3A fit maintains dimensional stability under dynamic loads, while the 90° cone point aggressively bites into mating surfaces to prevent rotational slippage in pulleys, gears, and collars. The hex drive configuration enables high installation torque in confined areas where traditional headed fasteners can't be used. Manufactured to ASME B18.3 specifications, these headless set screws provide reliable positioning in machinery, automotive, and industrial equipment applications where corrosion resistance and precise component alignment are essential.

Specification Summary & Compliance

This 4-40 UNC thread set screw features precise Class 3A thread fit tolerances with coarse thread spacing and 3/8" length. Manufactured in compliance with ASME B18.3 standards using ASTM F912 specifications. The component is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for industrial use.