S-94105A326 5-40 x 5/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Class 3A thread fit ensuring precise, vibration-resistant connections in demanding applications
• Superior corrosion resistance from black-oxide surface treatment protecting against rust and extending service life in harsh environments
• Optimized for confined spaces with headless design and compact 1/16" hex drive enabling installation where standard fasteners won't fit
• Enhanced durability through Rockwell C45 hardened alloy steel construction resisting wear and deformation under heavy loads
• Reliable coarse threading using 5-40 UNC specification for quicker installation and reduced cross-threading risks
• Secure flat tip design creating maximum surface contact to prevent component slippage and maintain positioning accuracy
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

Engineered for precision industrial applications, these 5-40 UNC set screws deliver critical securing performance in machinery, automation systems, and precision equipment. The black-oxide alloy steel construction combined with Rockwell C45 hardness provides exceptional resistance to vibrational loosening and environmental degradation. The headless design with 1/16" hex drive solves space-constrained installation challenges while maintaining high torque capability. Class 3A thread fit ensures consistent clamping force in right-hand coarse threading applications, making these flat tip set screws ideal for securing collars, gears, and pulleys where positional accuracy is paramount. Their compliance with major industrial standards guarantees reliability across manufacturing, aerospace, and automotive sectors.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and 5-40 UNC coarse thread profile. The black-oxide alloy steel construction delivers consistent performance across the 5/16" length with 1/16" hex drive compatibility. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures global acceptance. Thread specifications include right-hand direction and flat tip configuration for secure component fastening in inch-system applications.