Holo-krome 720003350 Hex Socket Cap Screw 3/4-10 Unc

Product Description

The HOLO-KROME 720003350 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 3/4-10 UNC thread and a 7.5-inch length under head, making it suitable for deeper through-bolt and tapped-hole applications. The 5/8-inch hex drive accepts a standard hex key or socket driver. Constructed from alloy steel with a black oxide coating, this screw delivers solid corrosion resistance and surface hardness appropriate for demanding service environments. Installation is typically performed by machinists, millwrights, or maintenance technicians working on heavy equipment, fixtures, or structural frames.

This cap screw is suited for use in industrial machinery, mechanical assemblies, structural steel connections, and heavy equipment fabrication where a partially threaded, high-strength fastener is required. The 3/4-10 UNC coarse thread pattern provides reliable engagement in standard tapped steel and cast iron bores. The black oxide finish makes it a common choice in environments where a low-reflectance, mildly corrosion-resistant fastener is specified. It is sold individually and is appropriate for both OEM production and MRO replacement applications.

Key Features

• 3/4-10 UNC coarse thread for standard tapped-hole compatibility
• 7.5-inch length under head suits deep fastening applications
• Partially threaded shank for precise clamping and shear load handling
• 5/8-inch hex socket drive for use with standard hex keys or socket drivers
• Alloy steel construction meets ASME B18.3 and ASTM A574 standards
• Black oxide coating provides mild corrosion resistance and low-reflectance finish

Compatibility

Designed as a high-strength replacement or OEM-spec hex socket cap screw for applications requiring a 3/4-10 UNC partially threaded fastener conforming to ASME B18.3 and ASTM A574.

Installation Notes

Installation should be performed by qualified mechanics or millwrights using a calibrated torque wrench and appropriately sized 5/8-inch hex key or socket bit. De-energize all equipment and relieve any stored mechanical, hydraulic, or pneumatic pressure before disassembling or reassembling fastened joints. Apply thread lubricant or anti-seize compound only if specified by the equipment manufacturer, as lubrication affects torque-to-clamp-load relationships. Follow applicable ASME or equipment OEM torque specifications for this thread size and grade.