Value Collection 011177P Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 011177P is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and industrial equipment. It features a 1/4-28 UNF thread and a 3/4-inch length under head, making it suitable for close-tolerance and fine-thread applications where a coarse-thread fastener would not suffice. Driven by a 3/16-inch hex key, the recessed socket head allows for torque application in confined spaces. Manufactured from alloy steel with a black oxide coating, the screw offers improved surface hardness and moderate corrosion resistance over uncoated steel fasteners. This fastener is installed by machinists, maintenance technicians, and trade professionals across a wide range of industries.

This screw is used in light machinery, fixtures, brackets, and equipment housings where a flush or low-profile fastening solution is required. The fine 1/4-28 UNF thread provides greater tensile strength and better resistance to loosening under vibration compared to coarse-thread equivalents. It is fully threaded, allowing full thread engagement across the entire shank length, which is especially useful in thin-material applications or when threading directly into a tapped hole.

Key Features

• 1/4-28 UNF fine thread for high-strength, vibration-resistant fastening
• 3/4-inch length under head, fully threaded shank
• 3/16-inch hex socket drive for use in tight or recessed spaces
• Alloy steel construction for high tensile and shear strength
• Black oxide finish for improved surface hardness and mild corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as an OEM-style replacement or standard fastener for use in any application requiring a 1/4-28 UNF hex socket cap screw with a 3/4-inch under-head length and 3/16-inch hex drive.

Installation Notes

Installation requires a 3/16-inch hex key or allen driver. Power down and de-energize any equipment before accessing fastener locations on live machinery. Ensure the tapped hole is clean and free of debris before threading to avoid cross-threading or galling. Do not exceed the rated torque specifications for the 1/4-28 thread class and material grade as defined by ASME B18.3 tables.