Value Collection 011171P Hex Socket Cap Screw 1/4-28 Unf

Product Description

The Value Collection 011171P is a hex socket cap screw designed for applications requiring a strong, compact fastening solution in tight or recessed spaces. Featuring a 1/4-28 UNF thread size and fully threaded along its 3/8-inch length under the head, this screw is driven with a 3/16-inch hex key. Constructed from alloy steel with a black oxide finish, it offers solid mechanical strength and moderate corrosion resistance. Manufactured to ASME/ANSI B18.3 and ASTM A574 standards, this fastener is suited for precision assemblies where thread engagement and dimensional accuracy matter.

This screw is commonly used in mechanical, HVAC, electrical, and industrial applications where internal hex drive fasteners are specified. The 1/4-28 UNF fine thread provides greater thread engagement per inch compared to coarse thread, making it well suited for thin materials, high-vibration environments, or assemblies requiring precise torque control. Installers and maintenance technicians working on equipment panels, brackets, and component mounting will find this fastener appropriate for a range of general and light-industrial uses.

Key Features

• 1/4-28 UNF fine thread for precise thread engagement and vibration resistance
• Fully threaded along 3/8-inch length under head for maximum grip
• 3/16-inch hex drive for use with standard Allen or hex key tools
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide coating provides mild corrosion resistance and reduced light glare
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application specifying a 1/4-28 UNF fully threaded socket head cap screw.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver. Ensure mating threads are clean and free of debris before installation. De-energize or shut down equipment fully before fastening or removing hardware on electrical or mechanical assemblies. Do not exceed the torque specifications listed in the equipment service manual for this thread size and material grade.