Holo-krome 72292 Hex Socket Cap Screw 5/8-11 Unc Alloy Steel

Product Description

The HOLO-KROME 72292 is a hex socket cap screw designed for high-strength mechanical fastening in demanding industrial and trade applications. It features a 5/8-11 UNC thread with a 5-1/2 inch length under the head and is partially threaded for proper load engagement. The alloy steel construction with a black oxide finish provides corrosion resistance and surface hardness. The 1/2 inch hex drive accommodates standard hex keys and socket wrenches. This fastener meets ASME B18.3 and ASTM A574 standards, making it suitable for structural and mechanical assembly work performed by machinists, maintenance technicians, and industrial tradespeople.

This screw is used in heavy equipment assembly, machine frames, industrial fixtures, and structural connections where a recessed drive and high tensile strength are required. The partial threading allows for firm clamping force between mated parts. It is commonly installed in both fabrication shop environments and field maintenance settings where high-load fastener specifications are critical.

Key Features

• 5/8-11 UNC thread for standard inch-series fastening applications
• 5-1/2 inch length under head with partial threading for strong clamping engagement
• Alloy steel construction meets ASTM A574 high-strength socket screw requirements
• Black oxide finish provides mild corrosion resistance and reduces surface glare
• 1/2 inch hex socket drive compatible with standard hex keys and drive tools
• Conforms to ASME B18.3 dimensional standard for socket cap screws

Compatibility

Designed as an OEM-style replacement or standard-spec fastener for industrial machinery, structural assemblies, and mechanical fixtures requiring 5/8-11 UNC hex socket cap screws per ASME B18.3 and ASTM A574.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using the correct 1/2 inch hex key or socket driver. Ensure mating threads are clean and free of debris before installation. De-energize and lock out all equipment before fastener replacement on live machinery per OSHA lockout/tagout procedures. Do not substitute a lower-grade fastener where ASTM A574 alloy steel is specified.