Value Collection 015421BR Hex Socket Cap Screw 5/8-11 Unc

Product Description

The Value Collection 015421BR is a hex socket cap screw designed for high-strength fastening applications across industrial, mechanical, and structural assemblies. It features a 5/8-11 UNC thread size with a 2-1/2 inch length under the head and is driven by a 1/2-inch hex (Allen) drive. Constructed from alloy steel with a black oxide finish, this fastener delivers solid tensile strength and moderate corrosion resistance. It is partially threaded, which is the standard configuration for cap screws of this diameter and length. Machinists, millwrights, maintenance technicians, and fabricators install these in machine tool fixtures, equipment frames, and precision assemblies where a flush or recessed fastener head is required.

This screw is suited for use in manufacturing facilities, maintenance shops, and fabrication environments. The 5/8-11 UNC coarse thread is widely used in general industrial machinery and steel-to-steel fastening. The black oxide coating reduces light reflection and provides mild corrosion resistance in dry or lightly oiled environments. This fastener meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it appropriate for applications that require documented fastener compliance. It is sold individually but must be ordered in multiples of 10.

Key Features

• 5/8-11 UNC coarse thread for broad compatibility with standard tapped holes
• 2-1/2 inch length under head with partial threading — standard for this size class
• 1/2-inch hex drive accepts standard hex keys and socket drive tools
• Alloy steel construction for high tensile and shear strength
• Black oxide finish provides mild corrosion resistance and low-reflectance appearance
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 fastener standards

Compatibility

Designed as an OEM-style replacement or general-purpose hex socket cap screw for any application using a 5/8-11 UNC tapped hole requiring a 2-1/2 inch grip length under head.

Installation Notes

Installation is performed using a 1/2-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before driving the fastener. Do not exceed the rated torque specifications for the alloy steel grade being used — consult applicable fastener torque tables for ASTM A574 socket head cap screws. Follow all applicable facility safety and equipment lockout/tagout procedures before servicing any assembly.