Holo-krome 720003356 Hex Socket Cap Screw 3/4-10 Unc

Product Description

The HOLO-KROME 720003356 is a partially threaded hex socket cap screw in 3/4-10 UNC thread, with a 9-1/2 inch length under head and a 5/8 inch hex drive. It is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and a consistent matte appearance. This fastener meets ASME B18.3 and ASTM A574 standards, making it appropriate for high-strength structural and mechanical assembly applications. Maintenance technicians, millwrights, and industrial contractors install this type of screw where reliable clamping force and socket-drive access are required.

This cap screw is suited for heavy industrial, mechanical, and structural installations where a 3/4-10 UNC threaded connection is specified. Partial threading allows the unthreaded shank to act as a precision locating or shear element in close-tolerance assemblies. The black oxide finish is commonly selected for indoor mechanical environments, tooling fixtures, machine frames, and equipment mounts where light oil retention helps maintain surface protection.

Key Features

• 3/4-10 UNC thread size for compatibility with standard coarse-thread tapped holes
• 9-1/2 inch length under head accommodates deep-grip or stacked-material assemblies
• Partially threaded shank provides shear resistance and precise location in critical joints
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish reduces light reflection and offers mild surface protection
• 5/8 inch hex socket drive works with standard Allen or hex-key tooling

Compatibility

Designed as an OEM-style and aftermarket replacement hex socket cap screw for applications requiring a 3/4-10 UNC, 9-1/2 inch partially threaded fastener conforming to ASME B18.3 and ASTM A574 standards.

Installation Notes

Installation should be performed by a qualified millwright, maintenance mechanic, or industrial technician using a calibrated torque wrench and the appropriate 5/8 inch hex key or socket driver. De-energize and lock out all equipment before fastener removal or installation per applicable OSHA lockout/tagout procedures. Do not substitute a shorter fastener where this length is structurally specified. Apply thread lubricant or anti-seize only if specified by the equipment manufacturer, as lubrication affects torque-tension relationships.