Learn about connectors
Lock nut connectors have a lock nut (hex nut) that can be screwed onto the threads of circular connectors to install and secure electrical connections. Lock nut connectors are used to save space in crowded panels, walls, or boxes. They also improve stability, making them ideal for applications in high-vibration environments such as aviation, military equipment, telecommunications facilities, and industrial panels.
Insert the lock nut connector into the back of the panel and screw the lock nut to the front to prevent the connector from falling out of the hole and getting lost behind the panel. The lock nut receptacle is round and flat on one side to prevent the connector from rotating. The use of lock nuts can usually be done by hand tightening (without tools or screws), making installation quick, easy, and safe.
This type of connection originated in military and aerospace electronics in the mid-1900s and was commonly used in crowded instrument panels for aircraft, spacecraft, and military ground vehicles, where the electronic connection to the instrument display was behind the screen.
Although this is a traditional form of connector, suppliers continue to improve their lock nut products to meet modern requirements, such as reducing SWaP. The format has also been introduced into newer interconnects, such as RF and coaxial cable products.
Lock nut connectors
Design Description
01/ Standardization /
The lock nut mechanism is used in many standardized round products, including MIL-spec products such as D-38999 and RF products such as SMA, LC, ST, SC, and MTO/MTP connectors.
Lock nut connectors
02/ Mounting Type /
Depending on the type and application, it is generally panel mounted.
Panel installation often hides equipment and wiring within walls or ceilings, making the whole space neat and aesthetically pleasing. It can also effectively prevent the occurrence of accidents such as accidental electric shock and fire, and has the advantages of safety and reliability. The panel-mounted equipment and wiring are concentrated in a place that is easy to repair, which is convenient for later maintenance and replacement.
03/ Material Specifications /
A lock nut receptacle is a common electrical connector that usually consists of two parts: one is a metal nut with threads, and the other is a receptacle made of plastic or metal materials. The nut can be tightened or loosened to control the switching of the circuit on or off. A number of factors are considered to ensure that its performance is stable, safe, reliable, economical and practical.
Lock nuts and lock washers
04/ Physical Properties/
In the double-lock form, the main and secondary nuts are tightly wrapped around and tightened to the connector, respectively, resulting in a stronger and safer connection. This design can enhance the mechanical strength and stability of the connector, preventing the connector from loosening or falling off.
For applications that require exposure to ambient pressure, additional sealing measures such as seals or coatings are often used to further improve the sealing performance of the connector. Seals fit snugly to the connector to prevent liquid and gas leakage, and coatings protect against corrosion, water, and dust to protect the connector from environmental factors.
05/ Environmental characteristics /
Lock nut connectors are often used in applications that require high sealing properties due to their tight connection and good sealing properties. Its integrated O-ring seals provide a safer and more reliable sealing mechanism to prevent leakage of liquids and gases. At the same time, the design of the bulkhead accessory can further reduce potential entry points and enhance the sealing performance of the connector.
This design makes lock nut connectors a good choice for sealing applications, especially where a high degree of reliability and safety sealing is required.
06/ Electrical Characteristics /
Voltage AC/DC
Current rating 7.5 amps