Value Collection 40217 Hex Socket Cap Screw 1/4-28 Unf

Product Description

The Value Collection 40217 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and equipment maintenance. Threaded 1/4-28 UNF with a 1/2 inch length under the head and fully threaded along the shank, this screw is driven with a 3/16 inch hex key. Constructed from alloy steel and finished with a black oxide coating, it provides solid tensile strength and moderate corrosion resistance in controlled environments. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it a recognized choice where dimensional and mechanical compliance is required.

This screw is suited for use in machine shops, industrial maintenance, HVAC equipment assembly, and general mechanical fabrication where fine-thread fasteners are specified. The 1/4-28 UNF thread pitch is commonly used in applications requiring greater thread engagement and vibration resistance compared to coarse-thread alternatives. Technicians and machinists working with steel fixtures, brackets, or equipment housings will find this screw fits standard fine-thread tapped holes. It is sold individually with a minimum order quantity of 50 pieces.

Key Features

• 1/4-28 UNF fine thread for high thread engagement and vibration resistance
• Fully threaded shank along the entire 1/2 inch length under head
• 3/16 inch hex drive for standard Allen wrench or hex bit installation
• 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 dimensional standards

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw suitable for any tapped hole or application conforming to ASME/ANSI B18.3 dimensional specifications.

Installation Notes

Install with a 3/16 inch hex key or Allen-drive bit. Ensure the mating tapped hole is clean and free of debris before installation. Power down any equipment fully before replacing or installing fasteners in live assemblies. Follow applicable mechanical codes and torque guidelines specified by the equipment manufacturer for 1/4-28 UNF socket head cap screws.