S-92695A404 5/16"-18 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional Vibration Resistance – Coarse UNC threads with Class 3A precision fit maintain secure positioning even under high-stress conditions.
• Superior Corrosion Protection – Black-oxide finish on alloy steel provides reliable defense against rust and wear in demanding environments.
• Maximum Grip Strength – 90° cone point design bites deeply into materials, preventing slippage and ensuring permanent component alignment.
• High Durability – Rockwell C45 hardness offers excellent resistance to deformation and extends service life in heavy-duty applications.
• Easy Installation & Removal – Hex drive design allows for quick, tool-friendly tightening with standard 5/32" wrenches.
• Space-Saving Headless Profile – Flush mounting capability makes it ideal for confined spaces where protruding fasteners are not feasible.
• Regulatory Compliance Assurance – Meets ASME B18.3 specifications and environmental standards including RoHS 3 and REACH.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical holding power for industrial assemblies requiring permanent shaft-hub connections. The Class 3A thread fit ensures precise engagement with mating components, eliminating backlash in pulleys, gears, and collars. Its coarse UNC 5/16"-18 threading provides rapid installation while resisting vibrational loosening better than fine-thread alternatives. The 90° cone point concentrates pressure on a minimal surface area, creating superior bite into hardened shafts without requiring additional machining. Engineered for high-strength applications in machinery, automotive, and manufacturing equipment, this headless hex drive set screw solves alignment retention challenges while complying with international engineering and environmental standards.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision (tighter tolerance than Class 2A). Features 5/16"-18 UNC coarse threads with right-hand direction and 1/2" length. The black-oxide alloy steel construction achieves Rockwell C45 hardness for optimal strength. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility in industrial supply chains.