JacobsParts Inc. DCJACK-D 10pcs 5.5mm x 2.1mm Male Straight Blade Plugs

5.5 mm x 2.1 mm DC Power Connectors

This pack contains ten male barrel plugs sized 5.5 mm by 2.1 mm. They are the standard connector for 12 V and 24 V DC power supplies. Each plug uses a screwless quick-connect mechanism that grips stripped wire when the button is released. The parts are supplied new and ready for immediate use.

Installers adding barrel ends to bare wires

The quick-connect design suits technicians who need to terminate cables without soldering or carrying a screwdriver. It works with solid or stranded conductors that fit the internal terminals. Buyers who require a locking collar, a right-angle housing, or a female jack should look at a different connector style.

5.5 mm x 2.1 mm barrel size

This single dimension decides whether the plug fits the target power supply or device jack. The 5.5 mm outer diameter and 2.1 mm inner pin are the most common pairing for 12 V and 24 V equipment. Verify the jack on your hardware matches these figures before ordering.