Holo-krome 730002220 Hex Socket Cap Screw 1/2-20 Unf

Product Description

The HOLO-KROME 730002220 is a hex socket cap screw designed for high-strength fastening applications requiring a recessed drive. It features a 1/2-20 UNF thread and measures 3/4 inches in length under the head. The screw is fully threaded and driven by a 3/8-inch hex key. Constructed from alloy steel with a black oxide finish, it delivers corrosion resistance and a clean appearance suited for both structural and mechanical assembly work. Installers working in HVAC equipment assemblies, mechanical brackets, and equipment panels will find this fastener a direct fit for precision-threaded applications where torque retention matters.

This fastener is used in residential and commercial mechanical installations where a flush or low-profile cap head is required. It is commonly found in equipment enclosure assemblies, mounting brackets, and structural hardware applications across HVAC, electrical, and plumbing trades. The 1/2-20 UNF fine thread pitch provides tighter thread engagement and improved resistance to loosening under vibration, making it appropriate for dynamic mechanical environments. Sold in minimum order quantities of 50 units per pack.

Key Features

• 1/2-20 UNF fully threaded fine-pitch thread for precise engagement
• 3/4-inch length under head for controlled fastening depth
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide coating provides mild corrosion resistance and reduces light reflection
• 3/8-inch hex socket drive for standard Allen key or hex bit installation
• Conforms to ASME B18.3 socket cap screw dimensional standards

Compatibility

Designed as an OEM-style replacement or stock fastener for any application requiring a 1/2-20 UNF fully threaded hex socket cap screw conforming to ASME B18.3 and ASTM A574 specifications.

Installation Notes

Installation requires a 3/8-inch hex key or Allen-head bit driver. Power down or de-energize all equipment before accessing fastened assemblies. Ensure mating threads are clean and free of debris before driving the fastener to prevent cross-threading. Follow applicable equipment manufacturer torque specifications and relevant mechanical codes for the trade application.