Holo-krome 730003140 Hex Socket Cap Screw 3/4-16 Unf

Product Description

The HOLO-KROME 730003140 is a hex socket cap screw designed for high-strength fastening applications in mechanical, industrial, and trade service environments. It features a 3/4-16 UNF thread size with full threading along its 2-3/4 inch length under head, providing maximum thread engagement for demanding load applications. The screw is manufactured from alloy steel and finished with black oxide coating, which offers mild corrosion resistance and reduces surface reflectivity. The 5/8 inch hex drive socket interface allows installation with standard hex keys or socket drivers. This fastener conforms to ASME B18.3 and ASTM A574 standards, confirming dimensional and mechanical property compliance for critical fastening use.

This cap screw is suited for machinery assembly, equipment mounting, structural fastening, and maintenance work across industrial, HVAC, plumbing, and mechanical contracting applications. It is appropriate for use in ferrous and non-ferrous assemblies where a high-strength, fine-thread fastener with a low-profile socket head is required. The fine UNF thread pitch provides improved torque control and better resistance to loosening under vibration compared to coarse-thread equivalents, making it a common choice in precision-fit assemblies and close-tolerance applications.

Key Features

• 3/4-16 UNF fine thread for improved vibration resistance and torque control
• Fully threaded 2-3/4 inch length under head for maximum thread engagement
• 5/8 inch hex socket drive for use with standard hex keys or socket drivers
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides mild corrosion protection and low-glare appearance
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-service fastener for applications requiring a 3/4-16 UNF hex socket cap screw conforming to ASME B18.3 and ASTM A574 specifications.

Installation Notes

Installation is typically performed by mechanical contractors, millwrights, or qualified trade technicians using a calibrated torque wrench and the appropriate 5/8 inch hex key or socket. Always de-energize and lock out equipment before replacing or installing structural fasteners per applicable safety procedures. Ensure mating threads are clean and free of debris before installation. Do not mix thread standards - confirm the mating component is also UNF before installation.