Value Collection 872371PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 872371PR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1/2-13 UNC thread size with a 3-inch length under the head and is partially threaded, allowing for secure clamping in through-bolt and blind-hole applications. Manufactured from alloy steel with a zinc-plated finish, this fastener delivers solid corrosion resistance and mechanical durability. It is driven with a 3/8-inch hex (Allen) key, making it compatible with standard socket tools found in most trade shops and fabrication environments. This screw meets ASME B18.8 and ASTM A574 standards.

This hex socket cap screw is suited for use in industrial machinery, general fabrication, maintenance and repair operations (MRO), and structural assemblies where a recessed-drive, high-strength fastener is required. The partial threading is appropriate for applications where a smooth shank section is needed for precise hole location or bearing load distribution. Machinists, millwrights, maintenance technicians, and fabricators commonly use this fastener type in both production and field service settings.

Key Features

• 1/2-13 UNC thread form for broad compatibility with standard inch-series tapped holes
• 3-inch length under head with partial threading for shank-bearing load applications
• 3/8-inch hex drive for use with standard Allen wrenches and hex bit sockets
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Zinc-plated finish provides corrosion resistance in general indoor and light-duty outdoor environments
• Conforms to ASME B18.8 dimensional standards for consistent fitment

Compatibility

Designed as a standard replacement or new-installation hex socket cap screw for any application requiring a 1/2-13 UNC partially threaded fastener with a 3-inch length under head and 3/8-inch hex drive.

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians using a 3/8-inch hex key or socket driver. Always ensure the mating tapped hole is clean and free of debris before threading. Torque to the appropriate value for the joint material and application per engineering or fastener manufacturer specifications. Do not exceed the rated mechanical limits of the mating material when applying torque.