Value Collection 837177PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 837177PR is a hex socket cap screw designed for applications requiring a compact drive profile and reliable clamping force. This fastener features a 1/4-28 UNF thread — a fine-pitch designation suited for assemblies where vibration resistance and precise thread engagement matter. The screw is fully threaded along its 3/4-inch length under head, providing maximum thread engagement in thin materials or shallow blind holes. Constructed from alloy steel with a zinc-plated finish, it delivers solid mechanical strength with basic corrosion resistance for general industrial and mechanical use. Drive size is 3/16 inch hex socket.

This fastener is used in a wide range of light-to-medium industrial, mechanical, and maintenance applications where a socket-drive cap screw is specified. The 1/4-28 UNF fine thread makes it appropriate for metal-to-metal assemblies, machine components, brackets, and fixtures where standard coarse-thread fasteners would not meet the specification. It is installed by maintenance technicians, machinists, and trade professionals using a 3/16-inch hex key or Allen driver. The zinc-plated finish provides a baseline level of corrosion protection in dry or mildly humid indoor environments.

Key Features

• 1/4-28 UNF fine thread for vibration-resistant, precise thread engagement
• Fully threaded shank maximizes thread engagement in shallow or thin-material applications
• Alloy steel construction for solid tensile and shear strength
• Zinc-plated finish provides baseline corrosion protection
• 3/16-inch hex socket drive for use with standard Allen keys or hex drivers
• Meets ASTM B695 fastener standard

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw suitable for general-purpose mechanical and industrial assemblies requiring this thread specification.

Installation Notes

Install using a 3/16-inch hex key or hex socket driver. Ensure mating threads are clean and free of debris before installation. De-energize or lock out any equipment before fastener service on live assemblies per applicable safety standards. Do not exceed the rated load for the fastener grade or substitute this fine-thread screw into applications specifying coarse-thread (UNC) fasteners without engineering review.