Holo-krome 730003240 Hex Socket Cap Screw 3/4-16 Unf

Product Description

The HOLO-KROME 730003240 is a hex socket cap screw designed for high-strength fastening applications requiring precise torque and a flush or recessed drive interface. The screw features a 3/4-16 UNF thread size, a partially threaded shank measuring 4.5 inches under the head, and a 5/8 inch hex drive. Constructed from alloy steel with a black oxide finish, it delivers corrosion resistance and maintains tensile strength under load. This fastener meets ASME B18.3 and ASTM A574 standards, making it suitable for demanding mechanical and structural assemblies.

This cap screw is used in industrial, mechanical, and structural applications where a recessed hex drive is preferred over external hex fasteners. It is a common choice in machine assembly, equipment maintenance, and fabrication work where flush mounting and high clamping force are required. The 3/4-16 UNF fine thread pitch provides precise engagement and superior holding power compared to coarse thread alternatives, making it well suited for metal-to-metal connections and precision assemblies.

Key Features

• 3/4-16 UNF fine thread for precise engagement and strong clamping force
• 4.5 inch length under head with partial threading for shank-load applications
• 5/8 inch internal hex drive for high-torque socket wrench installation
• Alloy steel construction meets ASTM A574 high-strength fastener specification
• Black oxide coating provides corrosion resistance and reduces light reflection
• Conforms to ASME B18.3 dimensional standards for socket cap screws

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw compatible with 3/4-16 UNF tapped holes in metal assemblies, machinery, and fabricated structural components.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 5/8 inch hex key or socket drive. Ensure the mating tapped hole is clean and free of debris before threading. Apply appropriate thread lubricant or thread-locking compound per assembly specifications. Do not exceed recommended torque values for the 3/4-16 UNF thread size and alloy steel grade as defined in your project or equipment service documentation.