Value Collection 837393PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 837393PR is a hex socket cap screw designed for high-strength fastening applications across mechanical, industrial, and structural assemblies. This fastener features a 1/2-20 UNF thread size with a 1 inch length under the head and is fully threaded for maximum thread engagement. The 3/8 inch hex drive accepts a standard Allen wrench or hex bit driver. Constructed from alloy steel with a zinc-plated finish, this screw delivers solid corrosion resistance in moderate-exposure environments. It meets ASTM B695 standards for zinc coating. Machinists, millwrights, and maintenance technicians are the typical installers for this style of fastener.

This cap screw is suited for use in precision mechanical assemblies, machine frames, tooling fixtures, and general industrial fastening where fine-thread engagement and high clamp load are required. The 1/2-20 UNF fine thread provides tighter thread pitch compared to coarse-thread equivalents, making it a common choice in applications requiring precise torque control or vibration resistance. It is commonly used in metal-to-metal connections in manufacturing, equipment maintenance, and fabrication environments.

Key Features

• 1/2-20 UNF fine thread for precise torque control and vibration resistance
• 1 inch length under head, fully threaded for maximum engagement
• 3/8 inch hex socket drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction for high tensile strength
• Zinc-plated finish meeting ASTM B695 for moderate corrosion protection

Compatibility

Designed as an OEM-style replacement or standard hex socket cap screw for mechanical assemblies, industrial equipment, and fabrication applications requiring a 1/2-20 UNF fine-thread fastener.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/8 inch hex key or Allen-drive bit. De-energize and lock out any equipment before performing fastener service on live machinery. Ensure mating threads are clean and free of debris before installation. Do not exceed torque ratings for the specific application and material being fastened.