Value Collection 581726BR Hex Socket Cap Screw 3/4-16 Unf

Product Description

The VALUE COLLECTION 581726BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this fastener measures 2.25 inches in length under the head and features a 5/8-inch hex drive socket for use with a standard hex key or Allen wrench. The 3/4-16 UNF thread specification indicates a fine-thread pattern, which provides greater tensile strength and improved resistance to loosening under vibration compared to coarse-thread equivalents. It meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards.

This screw is suited for general-purpose and precision mechanical assemblies where a recessed drive is preferred over an exposed bolt head. Common applications include machine components, tooling fixtures, hydraulic equipment, and any assembly requiring a flush or countersunk fastener profile. The fine-thread 3/4-16 UNF designation makes it appropriate for use in tapped holes requiring tighter thread engagement, particularly in metal-to-metal joints subject to dynamic loads or vibration.

Key Features

• 3/4-16 UNF fine-thread pattern for high tensile strength and vibration resistance
• 2.25 inches length under head, fully threaded along the entire shank
• 5/8-inch hex socket drive compatible with standard Allen keys and hex drivers
• Alloy steel construction for elevated mechanical strength
• Black oxide finish provides moderate corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3 and ASTM A574 standards

Compatibility

Designed as a standard OEM-style replacement or drop-in fastener for any application specifying a 3/4-16 UNF hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance mechanics using a calibrated hex key or torque wrench with the appropriate 5/8-inch hex bit. De-energize, depressurize, or otherwise isolate the assembly before removing or installing fasteners. Thread engagement should be verified against the tapped hole specification before final torque. Do not substitute this fine-thread fastener in applications specifying a coarse-thread UNC pattern without confirming hole compatibility.