Value Collection 307143BR Hex Socket Cap Screw 5/8-11 Unc

Product Description

The VALUE COLLECTION 307143BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this screw offers corrosion resistance and reduced light reflection in demanding environments. The 5/8-11 UNC thread pattern provides coarse-thread engagement suitable for general engineering use. At 3.25 inches in length under the head and partially threaded, it is built for through-bolt and clearance-hole applications where full threading is not required. Installation is performed with a 0.5 inch hex drive tool. Meets ASTM A574 specifications for alloy steel socket head cap screws.

This fastener is suited for heavy-duty mechanical assemblies, machine bases, fixture work, and structural connections where high clamping force is needed. The partially threaded shank provides a smooth bearing surface in the clearance hole portion, making it appropriate for applications requiring precise alignment between mated components. Typical installers include maintenance machinists, millwrights, mechanical contractors, and industrial maintenance technicians working with equipment that demands reliable, torque-rated fastening.

Key Features

• 5/8-11 UNC coarse thread for standard alloy steel hex socket cap screw applications
• 3.25 inch length under head with partial threading for clearance-hole and alignment-critical joints
• Alloy steel construction meets ASTM A574 socket head cap screw standard
• Black oxide finish provides mild corrosion resistance and low-glare appearance
• 0.5 inch hex socket drive for use with standard hex keys and socket drive tools

Compatibility

Designed as a standard ASTM A574 alloy steel hex socket cap screw compatible with 5/8-11 UNC tapped holes in industrial machinery, structural steel, and mechanical assemblies.

Installation Notes

Installation is performed by a machinist, millwright, or qualified mechanical technician using a 0.5 inch hex key or socket drive tool. Ensure the mating tapped hole is clean and free of debris before installation. Follow torque specifications published in ASTM A574 or applicable engineering standards for the assembly. Do not use power tools without a calibrated torque control to avoid thread damage or fastener failure.