Value Collection 872449BR Hex Socket Cap Screw 5/8-18 Unf

Product Description

The VALUE COLLECTION 872449BR is a hex socket cap screw designed for high-strength fastening in mechanical assemblies, tooling fixtures, and general industrial applications. It features a 5/8-18 UNF thread form with fully threaded construction along a 1-1/4 inch length under head. Drive engagement is through a 1/2 inch internal hex socket. The fastener is manufactured from alloy steel and finished with a zinc plating that provides baseline corrosion resistance. It conforms to ASME B18.8 and ASTM A574 standards, making it a recognized option where specification-grade socket cap screws are required by engineers or maintenance technicians.

This screw is suited for applications where a flush or recessed fastener head is required and where torque loads demand alloy steel construction. Common installation scenarios include machine frames, hydraulic component mounting, jig and fixture assembly, and industrial equipment maintenance. The fine UNF thread pitch provides increased thread engagement and is preferred in applications where vibration resistance or precise tensioning is critical. This fastener is sold individually and is appropriate for low-quantity replacement or specification sampling.

Key Features

• 5/8-18 UNF fine thread for increased vibration resistance and tensioning precision
• Fully threaded along the 1-1/4 inch length under head for maximum thread engagement
• 1/2 inch internal hex drive for high-torque socket wrench or hex key installation
• Alloy steel construction meets ASTM A574 for specification-grade strength requirements
• Zinc-plated finish provides baseline corrosion protection for general indoor and light industrial use
• Conforms to ASME B18.8 dimensional standards

Compatibility

Designed as a specification-grade replacement or maintenance fastener for assemblies requiring a 5/8-18 UNF hex socket cap screw per ASME B18.8 and ASTM A574.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 1/2 inch hex key or socket driver. Ensure mating threads are clean and free of debris before installation. Do not exceed the rated mechanical properties of the ASTM A574 specification when applying torque. Inspect thread engagement and seating surface condition before final fastening to avoid galling or cross-threading.