Value Collection 872393PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 872393PR is a hex socket cap screw designed for high-strength fastening applications where precise torque and a low-profile head are required. Built from alloy steel with a zinc-plated finish, this screw provides corrosion resistance suitable for industrial and mechanical assembly environments. It features a 1/2-20 UNF thread size, a 1-inch length under head, and a 3/8-inch hex drive for use with standard hex keys or Allen drivers. Fully threaded from head to tip, it delivers maximum thread engagement across the entire shank. This fastener is installed by machinists, millwrights, and maintenance technicians across a wide range of mechanical and structural assembly tasks.

This screw is suited for general industrial fastening, machinery assembly, tooling fixtures, and equipment maintenance where a UNF fine-thread pattern is specified. The fine thread pitch provides greater tensile strength and resistance to loosening under vibration compared to coarse-thread equivalents. It is appropriate for applications requiring controlled clamping force in steel or aluminum components where thread stripping must be minimized.

Key Features

• 1/2-20 UNF fine-thread pattern for high tensile load and vibration resistance
• Alloy steel construction for strength in demanding fastening applications
• Zinc-plated finish provides basic corrosion protection
• Fully threaded shank for maximum thread engagement
• 3/8-inch hex drive compatible with standard hex keys and socket drivers
• Meets ASME B18.8 and ASTM A574 fastener standards

Compatibility

Designed as a standard 1/2-20 UNF hex socket cap screw for use in any application specifying ASME B18.8 or ASTM A574 compliant fasteners in alloy steel.

Installation Notes

Installation is performed using a 3/8-inch hex key or Allen socket driver. Ensure mating threaded holes are clean and free of debris before driving the screw. Apply thread-locking compound if required by the assembly specification to prevent loosening under dynamic loads. Follow applicable industry standards and equipment manufacturer torque guidelines for the specific joint material and clamping requirement.