Value Collection 872183PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 872183PR is a hex socket cap screw designed for applications requiring a secure, low-profile fastener with a recessed drive. It carries a 1/4-28 UNF thread size, a 1-1/4 inch length under head, and is fully threaded. The 3/16 inch hex drive accepts a standard hex key or Allen wrench. Constructed from alloy steel with a zinc-plated finish, this screw delivers solid mechanical strength and basic corrosion resistance for indoor and light-duty industrial environments. It meets ASME B18.8 and ASTM A574 standards, making it suitable for precision and structural fastening tasks.

This screw is used in mechanical assemblies, fixtures, and fabricated components where a recessed hex drive is preferred over an external hex head. The fine 1/4-28 UNF thread pitch provides greater thread engagement per inch compared to coarse thread, making it well suited for thin-material applications, vibration-prone assemblies, and situations where precise torque adjustment is needed. It is commonly installed by machinists, millwrights, and maintenance technicians in manufacturing, HVAC equipment assembly, and general industrial settings.

Key Features

• 1/4-28 UNF fine thread for high thread engagement and vibration resistance
• Fully threaded 1-1/4 inch length under head for maximum grip across material thickness
• 3/16 inch hex socket drive compatible with standard hex keys and T-handle drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Zinc-plated finish provides basic corrosion protection for indoor and sheltered use
• Conforms to ASME B18.8 dimensional standards for consistent fitment

Compatibility

Designed as an OEM-style and general-purpose replacement hex socket cap screw for assemblies requiring a 1/4-28 UNF fully threaded fastener with a 3/16 inch hex drive.

Installation Notes

Installation is performed with a 3/16 inch hex key or Allen driver. Ensure the mating threaded hole is clean and free of debris before driving the screw. Avoid over-torquing, which can strip the fine UNF threads or damage the zinc coating. Follow applicable industry torque guidelines for 1/4-28 alloy steel fasteners in the relevant assembly context.