S-92695A305 1/4"-20 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Exceptional holding power thanks to the 90° cone point design that digs deep into mating surfaces for maximum security
• Precise thread engagement with Class 3A fit ensuring tight tolerances and reliable performance in critical applications
• High-strength durability from alloy steel construction with Rockwell C45 hardness for long-lasting performance under heavy loads
• Easy installation and removal with hex drive design that provides excellent torque transmission and tool access
• Space-saving headless design allowing for flush mounting where clearance is limited
• Industry-standard compatibility with UNC coarse threads that provide quick assembly and disassembly

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional engineering value in applications requiring secure component positioning and alignment. The 90° cone point creates permanent seating marks in shafts, collars, and pulleys, preventing rotational slippage in high-torque environments. With UNC coarse threads and Class 3A fit, these headless set screws provide reliable fastening in machinery, automotive assemblies, and power transmission systems where vibration resistance is critical. The hex drive configuration ensures maximum torque application without stripping, while the Rockwell C45 hardness maintains structural integrity under repeated stress cycles. Ideal for permanent installations in manufacturing equipment, conveyor systems, and precision instruments where space constraints demand flush-mounted fasteners.

Specification Summary & Compliance

This 1/4"-20 UNC set screw features precise Class 3A thread fit with coarse thread spacing for optimal engagement. Manufactured to meet ASME B18.3 specifications (ASTM F912) ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) environmental standards and REACH (EC 1907/2006) regulations regarding chemical substances. Additional specifications include right-hand thread direction, 1/2" length, and 1/8" hex drive size for standardized tool compatibility across industrial applications.