Value Collection 872181PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 872181PR is an alloy steel hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and equipment. Featuring a 1/4-28 UNF thread size and a 1-inch length under head, this fastener is fully threaded for maximum thread engagement. The 3/16-inch hex drive socket allows for precise torque application with a standard hex key or Allen driver. The zinc-plated finish provides basic corrosion resistance for general indoor and light-duty industrial use. Manufactured to ASME B18.8 and ASTM A574 standards, this cap screw delivers the dimensional consistency and mechanical strength that trade professionals depend on.

This fastener is suited for use in light manufacturing, HVAC equipment assembly, mechanical maintenance, and general industrial applications where a fine-threaded, socket-drive cap screw is required. The 1/4-28 UNF fine thread pitch offers improved tensile strength and vibration resistance compared to coarse-thread equivalents, making it a practical choice in applications where joint security under dynamic loads matters. Sold individually with a minimum order quantity of 100 pieces.

Key Features

• 1/4-28 UNF fine thread for improved tensile strength and vibration resistance
• Fully threaded along the 1-inch length under head for maximum thread engagement
• 3/16-inch internal hex drive for use with standard hex keys or Allen drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Zinc-plated finish for basic corrosion protection in general-duty environments
• Manufactured to ASME B18.8 dimensional standards for consistent fitment

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw for use in any application requiring an ASME B18.8 or ASTM A574 compliant alloy steel fastener with a 3/16-inch hex drive.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver; do not substitute an undersized or worn key, as this can strip the socket recess. Ensure mating threads are clean and free of debris before assembly. Follow applicable equipment manufacturer torque guidelines for 1/4-28 fasteners, as specific torque values are not provided with this part. Always de-energize and lockout equipment before performing any fastener service on powered assemblies.