Value Collection 011191PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 011191PR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and structural fabrication. Threaded to the 1/4-28 UNF specification, this fine-thread fastener provides strong clamping force and resistance to loosening under vibration. The alloy steel construction with black oxide coating delivers improved corrosion resistance and a clean, low-reflectance finish. The 3/16-inch hex drive accepts a standard hex key or Allen driver. At 2-1/4 inches length under head with partial threading, this screw is suited for through-bolting and tapped-hole applications where grip length control matters.

This fastener is used across a wide range of trade and industrial applications including HVAC equipment assembly, electrical panel fabrication, plumbing fixture mounting, and general mechanical maintenance. The 1/4-28 UNF fine thread is common in precision equipment, machine frames, and applications requiring tighter thread engagement than coarse-thread alternatives. Typical installers include millwrights, HVAC technicians, electricians, and maintenance mechanics working on metal-to-metal assemblies. Sold individually, with a minimum order quantity of 100 units.

Key Features

• 1/4-28 UNF fine thread for strong, vibration-resistant engagement
• 2-1/4-inch length under head with partial threading for controlled grip length
• Alloy steel construction meets ASTM A574 for high-strength fastener requirements
• Black oxide coating provides mild corrosion resistance and low-glare finish
• 3/16-inch hex socket drive compatible with standard hex keys and Allen drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-service fastener for any application requiring a 1/4-28 UNF hex socket cap screw with a 2-1/4-inch length under head and 3/16-inch hex drive.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver. Ensure the mating tapped hole is clean and properly threaded to 1/4-28 UNF specification before driving the fastener. Power down or de-energize any equipment before accessing fastened assemblies. Follow applicable torque guidance from the equipment manufacturer or relevant standards for the assembly being serviced.