S-94105A638 1/4"-28 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
• High-strength performance from alloy steel construction with Rockwell C45 hardness for exceptional load-bearing capacity
• Optimized torque transmission through 1/8" hex drive design, preventing tool slippage during installation
• Space-saving headless profile enabling flush mounting where clearance is limited
• Fine thread configuration (1/4"-28 UNF) providing enhanced adjustment precision and superior holding power
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional engineering value in precision assembly applications where vibration resistance and corrosion protection are critical. The Class 3A thread fit combined with UNF fine threading creates superior clamping force distribution, effectively preventing loosening in machinery, automotive components, and precision equipment. The headless hex drive configuration allows for seamless integration in confined spaces while maintaining high torque capability. Engineered with Rockwell C45 hardness, this industrial fastener withstands repeated adjustments without thread deformation, making it ideal for permanent positioning applications in manufacturing fixtures, drive systems, and precision instruments where reliability cannot be compromised.

Specification Summary & Compliance

This set screw features precision 1/4"-28 UNF fine threads with Class 3A thread fit for exacting dimensional accuracy. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant for international regulatory requirements. Additional specifications include right-hand thread direction, flat tip configuration, and 1/2" length for standardized industrial applications.