Value Collection 40220 Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 40220 is a hex socket cap screw designed for applications requiring a secure, high-strength threaded fastener in tight clearance areas where a traditional hex head wrench cannot reach. This screw features a 1/4-28 UNF thread form, a 1-1/4 inch length under head, and is fully threaded along its entire shank. It is driven with a 3/16 inch hex key. Constructed from alloy steel with a black oxide finish, the 40220 delivers solid corrosion resistance and surface hardness. It is a standard choice for mechanical assemblies, equipment repair, and fabrication work across industrial and trade environments.

This screw suits residential and commercial applications where fine-threaded fasteners are required for controlled tension and vibration resistance. Typical uses include machine component assembly, equipment mounting brackets, enclosure panels, and general mechanical repairs. The 1/4-28 UNF thread pitch is common in precision assemblies where fine thread engagement is preferred over coarse thread alternatives. Trades including HVAC technicians, electricians, pipefitters, and general maintenance mechanics regularly use socket cap screws of this type during equipment installation and repair.

Key Features

• 1/4-28 UNF fully threaded shank for maximum thread engagement
• 1-1/4 inch length under head suits moderate-depth fastening applications
• 3/16 inch hex drive allows installation in confined or recessed locations
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 fastener standards
• Black oxide coating provides mild corrosion resistance and reduces light reflection

Compatibility

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

Installation Notes

Install using a 3/16 inch hex key or Allen driver. Power down and de-energize any equipment before replacing fasteners on live assemblies. Follow applicable torque guidelines from the equipment manufacturer for 1/4-28 UNF fasteners to avoid thread stripping in the mating material. Verify that the mating thread is also UNF fine pitch before installation.