Holo-krome 73072 Hex Socket Cap Screw 1/4-28 Unf 2 in

Product Description

The HOLO-KROME 73072 is a hex socket cap screw designed for high-strength fastening applications where a flush, recessed drive is required. Threaded to a 1/4-28 UNF specification with a 2-inch length under head, this screw is partially threaded and driven with a 3/16-inch hex key. Constructed from alloy steel with a black oxide finish, it resists corrosion while maintaining tight dimensional tolerances. It meets ASME B18.3 and ASTM A574 standards, making it suitable for precision mechanical assemblies where fastener performance is critical.

This screw is used across a wide range of trade and industrial applications including HVAC equipment assembly, electrical enclosure fabrication, plumbing fixture mounting, and general mechanical maintenance. The 1/4-28 UNF fine thread pitch provides greater thread engagement and resistance to loosening under vibration compared to coarse thread equivalents. It is well suited for metal-to-metal fastening in tight clearance situations where a low-profile socket drive is preferred over hex head or Phillips configurations.

Key Features

• 1/4-28 UNF fine thread for high thread engagement and vibration resistance
• 2-inch length under head with partial threading for controlled clamping
• 3/16-inch hex socket drive for use with standard Allen keys or hex drivers
• Alloy steel construction for high tensile strength in demanding applications
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Meets ASME B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw conforming to ASME B18.3 dimensions, suitable for any application requiring this thread size and drive type.

Installation Notes

Installation is performed with a 3/16-inch hex key or socket driver. Ensure the mating threaded hole is clean and free of debris before driving. Do not overtighten, as alloy steel socket cap screws can shear if torque is applied beyond material limits. This fastener is sold in a minimum order quantity of 100 units per order.