Value Collection 872451BR Hex Socket Cap Screw 5/8-18 Unf

Product Description

The VALUE COLLECTION 872451BR is a hex socket cap screw designed for applications requiring precise torque and a low-profile fastening solution. This fully threaded cap screw features a 5/8-18 UNF thread size, a 1-1/2 inch length under head, and a 1/2 inch hex drive. Constructed from alloy steel with a zinc-plated finish, it delivers the hardness and corrosion resistance needed in demanding mechanical, industrial, and structural assembly work. Installation requires a standard 1/2 inch hex key or allen driver. This screw meets ASME B18.8 and ASTM A574 standards, confirming it is rated for high-strength fastening tasks.

This cap screw is suited for use in general mechanical assemblies, machine frames, tooling fixtures, and industrial equipment. The fine 18-TPI thread pitch on the 5/8 inch diameter shank provides improved thread engagement and resistance to loosening under vibration, making it a common choice in automotive, manufacturing, and maintenance applications. The zinc-plated coating adds a layer of corrosion protection appropriate for indoor and light-duty service environments. It is typically installed by machinists, millwrights, and maintenance technicians working with close-tolerance assemblies.

Key Features

• 5/8-18 UNF fine thread for improved vibration resistance and precise clamping force
• Fully threaded along the 1-1/2 inch under-head length for maximum thread engagement
• 1/2 inch internal hex drive for high-torque socket wrench or allen key installation
• Alloy steel construction rated to ASTM A574 high-strength fastener specification
• Zinc-plated finish provides corrosion resistance for general indoor service use
• Conforms to ASME B18.8 dimensional standards for consistent fitment

Compatibility

Designed as a standard ASME B18.8 and ASTM A574 compliant hex socket cap screw suitable for general mechanical and industrial assemblies using 5/8-18 UNF threaded bores.

Installation Notes

Installation requires a 1/2 inch hex key or socket driver; ensure the mating threaded bore is clean and free of debris before driving. Power down or de-energize any equipment before performing fastener service on mechanical assemblies. Apply thread lubricant or thread-locking compound as required by the assembly specification. Do not exceed the torque rating specified by the equipment manufacturer or assembly drawing.