Value Collection 015399PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The Value Collection 015399PR is a hex socket cap screw engineered for high-strength fastening applications in mechanical, industrial, and trade environments. It features a 1/2-20 UNF thread size, a 1-3/4 inch length under head, and full threading along the shank. The screw is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection on the fastener surface. The 3/8 inch hex drive socket requirement makes it compatible with standard socket wrenches and hex key tooling. This fastener is built to ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, confirming compliance with recognized mechanical fastener specifications.

This socket cap screw is suited for precision assembly work where a recessed drive and high clamp load are required. Typical applications include machine frames, fixtures, tooling plates, and structural mechanical assemblies in industrial and commercial settings. Its fine UNF thread pitch provides finer thread engagement and is well-suited for applications requiring controlled torque and resistance to loosening under vibration. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener type.

Key Features

• 1/2-20 UNF fine thread for secure engagement and vibration resistance
• Fully threaded shank along 1-3/4 inch length under head
• Alloy steel construction for high tensile strength and durability
• Black oxide finish for moderate corrosion protection and low-glare appearance
• 3/8 inch hex socket drive compatible with standard hex keys and socket drivers
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 fastener standards

Compatibility

Designed as an OEM-style and general-use replacement or new-installation socket cap screw for 1/2-20 UNF threaded applications in mechanical assemblies, fixtures, and industrial equipment.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician using a calibrated 3/8 inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before installation. Follow the equipment manufacturer or applicable ASME standards for proper seating procedure. Do not use impact tooling to seat socket cap screws into precision-tapped holes, as this may damage threads or the drive socket.