Holo-krome 72264 Hex Socket Cap Screw 5/8-11 Unc Alloy Steel

Product Description

The HOLO-KROME 72264 is a hex socket cap screw designed for high-strength fastening applications where a recessed drive and a compact head profile are required. It features a 5/8-11 UNC thread, a 1-inch length under head, and a 1/2-inch hex drive. The fastener is fully threaded and manufactured from alloy steel with a black oxide coating for moderate corrosion resistance. It meets ASME B18.3 and ASTM A574 standards, making it suitable for load-bearing assemblies. Mechanical contractors, industrial maintenance technicians, and millwrights typically install this fastener in structural and equipment-mounting applications.

This screw is used in a wide range of industrial, mechanical, and structural applications where a flush or recessed fastener head is needed. Its full threading and coarse 5/8-11 UNC pitch make it well suited for steel-to-steel joints, machine frames, equipment bases, and fixtures. The black oxide finish provides a degree of surface protection against light moisture and mild environments. It is appropriate for both original equipment assembly and maintenance and repair operations in commercial and industrial settings.

Key Features

• 5/8-11 UNC coarse thread for strong thread engagement in steel applications
• Fully threaded 1-inch length under head for maximum thread coverage in thin material joints
• 1/2-inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide coating provides light corrosion resistance and reduces light glare on the fastener surface
• Conforms to ASME B18.3 dimensional standards for consistent fitment

Compatibility

Designed as an OEM-style and MRO replacement hex socket cap screw for applications requiring a 5/8-11 UNC, fully threaded fastener conforming to ASME B18.3 and ASTM A574 standards.

Installation Notes

Installation is performed by mechanical technicians and industrial maintenance professionals using a 1/2-inch hex key or socket driver. De-energize and lock out any equipment before accessing fastener locations on live machinery. Follow applicable ASME or equipment manufacturer torque guidelines for 5/8-inch alloy steel fasteners. Avoid using impact tools at excessive speed to prevent thread galling or fastener damage.