Value Collection 015189PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 015189PR is a hex socket cap screw designed for secure, high-torque fastening in mechanical assemblies. It features a 1/4-28 UNF thread, a 3/16-inch hex drive socket, and a 2-inch length under head. The screw is partially threaded and manufactured from alloy steel with a black oxide coating for corrosion resistance. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it a reliable choice for applications requiring precise thread engagement and repeatable clamping force. Installation requires a standard 3/16-inch hex key or hex driver.

This fastener is suited for use in industrial machinery, tooling fixtures, hydraulic assemblies, and general mechanical fabrication where a flush or recessed fastener head is required. The 1/4-28 UNF fine thread pitch provides higher thread strength and finer adjustment compared to coarse thread equivalents, making it appropriate for applications with metal-to-metal contact or thin-wall components. Trade machinists, millwrights, and maintenance technicians commonly use this screw type in both original equipment and field repair work.

Key Features

• 1/4-28 UNF fine thread for higher tensile strength and finer clamping control
• 3/16-inch hex socket drive for use with standard hex keys or L-wrenches
• 2-inch length under head with partial threading for unthreaded grip section engagement
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• Conforms to ASME/ANSI B18.3 and IFI 124 dimensional standards

Compatibility

Designed as a standard-dimension hex socket cap screw per ASME/ANSI B18.3, suitable for any application requiring a 1/4-28 UNF partially threaded socket head cap screw with a 2-inch length under head.

Installation Notes

Installation requires a 3/16-inch hex key or hex bit driver. Ensure mating threads are clean and free of debris before assembly. De-energize and lock out any equipment before replacing or installing fasteners in live machinery. Do not exceed the rated torque for 1/4-28 alloy steel fasteners as specified by the equipment manufacturer.