S-94105A321 5/16"-24 x 5/16" 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 tight, secure fastening with minimal backlash in critical assemblies
• High-strength alloy steel construction with Rockwell C45 hardness provides excellent wear resistance and durability
• Hex drive design allows for high torque application and easy installation in confined spaces
• Fine UNF thread profile delivers enhanced vibration resistance and superior clamping force distribution
• Headless flat tip configuration enables flush mounting without protrusion interference
• Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these black-oxide alloy steel set screws provide reliable performance in machinery, automotive, and precision equipment assemblies. The Class 3A UNF fine threads maintain precise alignment under vibration, while the hex drive headless design allows installation in space-constrained applications where protruding fasteners are impractical. The combination of Rockwell C45 hardness and corrosion-resistant coating ensures long-term reliability in environments exposed to moisture, chemicals, and mechanical stress, making these industrial set screws ideal for permanent positioning and securing components in rotating assemblies.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with precise Class 3A thread fit tolerance for superior engagement. Features 5/16"-24 UNF fine threads with right-hand direction and flat tip configuration. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The 5/32" hex drive provides standardized tool compatibility for consistent installation torque values.