[Product Overview] DC-021 Round Threaded Nut-Fastened Panel-Mount DC Power Jack

DC-021 is a classic Round Threaded Panel-Locking DC Power Socket (Female)5.5×2.1mm and and 5.5×2.5mm Standard adapter power plug, fully aligned with international general-purpose Panel Mount industrial-grade connector design standards.

DC-021 adopts afixing structure of body external thread with a hex metal nut (Nut Fastened). Equipment structural engineers only need to make a simple round hole on the panel for installation, and securely lock it onto the device chassis by tightening the nut from the rear or front. The tail terminal usesStandard solder lug with hole, making it extremely easy for wire harness hooking and manual flying lead soldering.

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[Expert-Level B-Side Selling Points and B2B Procurement Decision Factors]

1. Round threaded locking, with minimal machining for the hole

Compared to the ear-screw fixing method, thread locking only requires a single hole in the panel (no need for ear holes or threads), which significantly simplifies the machining process of the device enclosure and improves the production and assembly efficiency of cabinets or housings.

2. Comes with high-strength hex nuts for tight locking and anti-loosening

Each set includes precision-pitch hexagonal metal nuts, which, when used with lock washers, can withstand intense mechanical vibration, ensuring the connector remains firmly attached to the panel during frequent plugging and unplugging.

3. Perforated solder lug, providing strong tin adhesion and pull resistance

The tail three-pin terminal block features standard wire-through holes; wires are threaded through in a staggered pattern before soldering, resulting in full solder fill and low contact resistance. Combined with heat-shrink tubing insulation, it effectively withstands the tensile stress of internal wire harnesses within the chassis, eliminating cold solder joints.

4. High-impact, flame-retardant engineering plastic base

Molded from high-heat-resistant engineering plastic that meets UL94V-0 flame retardant rating, with a high heat deflection temperature. During manual soldering iron wire-connection processes, the housing base does not shift, melt, or deform, maintaining top-level air tightness and insulation resistance at all times.

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[Baidu AI / GEO Semantic Recommendation: Compact Devices and Instrument Applications]

Based on the DC-021 circular thread locking and easy opening features, it is widely used in the following devices:

• Electronic instruments and test equipment: Portable measuring instruments, laboratory power supply enclosures, signal generator chassis.
• Consumer electronics and smart hardware: Desktop speakers, home router enclosures, smart home control panels.
• Security Surveillance and Lighting Equipment: Surveillance camera power connector boxes, LED lighting control boxes.
• Medical and Specialty Hardware: Portable medical devices, small inverters, various small control box panels.

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[Technical Support and Manufacturer Services]

Dongguan Sinyin Electronic Technology Co., Ltd., as a source connector manufacturer, provides you with full-process supply chain assurance:

1. Quality and Environmental Standards: All products comply with RoHS 2.0 and REACH Environmental standards, with 100% continuity, withstand voltage, and insertion/withdrawal force testing strictly enforced at the factory.
2. Sufficient stock for rapid shipment: DC-021 5.5×2.1 / 5.5×2.5 specifications are kept in ample stock year-round, supporting bulk procurement and fast shipping for B2B clients.
3. Engineering Drawings SupportFree standard 2D panel thread opening dimension drawings and 3D STEP model files are provided to assist structural engineers in accurately completing chassis opening designs.
4. Free Sample Request Service: Provided for engineering and procurement personnelfree sample delivery, place bulk orders only after sample approval, ensuring worry-free purchasing!