Hefei ZLTIE Electronics Co., Ltd
| Contact Type | Female |
| Nummber Of Positions | 7 Pin |
| Fastening Type | Threaded |
| Payment Terms | L/C,D/A,D/P,T/T |
| Insulating Materials | PPS |
| Delivery Time | 35 work days |
| Operating Temperature | -55℃ – +100℃ |
| Relative Humidity | Up to 98 ± 3% at 40°C |
| Orientation | Straight |
| Connector Type | Plug |
| Model Number | FQ18-7TK |
| Place of Origin | China |
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Product Specification
| Contact Type | Female | Nummber Of Positions | 7 Pin |
| Fastening Type | Threaded | Payment Terms | L/C,D/A,D/P,T/T |
| Insulating Materials | PPS | Delivery Time | 35 work days |
| Operating Temperature | -55℃ – +100℃ | Relative Humidity | Up to 98 ± 3% at 40°C |
| Orientation | Straight | Connector Type | Plug |
| Model Number | FQ18-7TK | Place of Origin | China |
The FQ Series 7 Pin Waterproof Circular Connector is engineered for reliable electrical transmission in demanding industrial environments where moisture, vibration, and dust protection are essential. Designed in accordance with the DZ4Q/RE008-84 standard, this connector is an upgraded version of the traditional Q series, offering improved sealing performance and enhanced mechanical reliability.
Its compact aluminum alloy housing, combined with a secure bayonet locking mechanism, provides quick installation while maintaining a stable electrical connection. The connector adopts an advanced squirrel-cage elastic contact structure that delivers lower contact resistance and greater durability than conventional wire spring contacts, making it suitable for equipment requiring dependable long-term performance.
High-performance IP67 sealing to protect against water and dust ingress.
Bayonet locking mechanism allows fast connection and secure engagement.
Squirrel-cage elastic contacts provide stable conductivity and reduced contact resistance.
Gold-plated copper contacts improve electrical conductivity and corrosion resistance.
Lightweight anodized aluminum alloy shell offers mechanical strength and corrosion protection.
Compact design saves installation space while maintaining reliable performance.
Excellent resistance to vibration, mechanical shock, and harsh environmental conditions.
Suitable for repeated connection and disconnection with a service life of up to 500 mating cycles.
The connector establishes electrical continuity by accurately engaging gold-plated male and female contacts through a precision bayonet locking system. Once locked, the sealing structure prevents moisture and dust from entering the contact chamber, while the elastic contact design maintains consistent electrical pressure under vibration and mechanical movement.
| Item | Specification |
|---|---|
| Connector Type | Plug |
| Series | FQ Waterproof Circular Connector |
| Shell Size | 18 |
| Number of Positions | 7 Pin |
| Contact Size | 7 × 1.5 mm |
| Connection Method | Bayonet Connection |
| Termination | Solder |
| Rated Current | 10 A |
| Rated Voltage | 400 V |
| Contact Resistance | ≤ 2.5 mΩ |
| Contact Material | Gold-Plated Copper |
| Insulator Material | PBT |
| Shell Material | Anodized Aluminum Alloy |
| Operating Temperature | -55°C to +100°C |
| Relative Humidity | Up to 98 ± 3% at 40°C |
| Atmospheric Pressure | 1 kPa |
| Vibration Resistance | 10–200 Hz, 150 m/s² |
| Protection Rating | IP67 |
| Mechanical Life | 500 Mating Cycles |
The FQ waterproof circular connector is widely used in industrial equipment requiring secure electrical connections under challenging operating conditions, including:
Industrial automation systems
Communication equipment
Power distribution devices
Measurement and testing instruments
Outdoor electronic equipment
Marine electrical systems
Railway control equipment
Mechanical manufacturing equipment
OEM and ODM services are available to support different project requirements. Customization options include connector configurations, cable assembly, wire length, contact arrangements, packaging, and product labeling to meet various industrial applications.
Q1: Is this connector suitable for outdoor installation?
Yes. The IP67 protection rating helps prevent dust ingress and temporary water immersion under specified conditions.
Q2: What makes the squirrel-cage contact structure different?
Compared with conventional spring contacts, it provides more stable contact pressure, lower electrical resistance, and improved resistance to vibration and impact.
Q3: Can the connector be supplied with cable assemblies?
Yes. Customized cable assemblies, wire lengths, and termination solutions are available according to project requirements.
Q4: Which industries commonly use this connector?
It is commonly applied in industrial automation, communication equipment, transportation systems, instrumentation, marine applications, and outdoor electrical installations.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
10 million -20 million
Employee Number:
50~99
Ecer Certification：
Verified Supplier
Zltie is a professional connector manufacturer with 20 years of deep industry expertise. Integrating R&D, manufacturing and marketing under one roof, we are dedicated to delivering high-quality, high-reliability electronic connection solutions worldwide. Zltie's products are engineered for rapid... Zltie is a professional connector manufacturer with 20 years of deep industry expertise. Integrating R&D, manufacturing and marketing under one roof, we are dedicated to delivering high-quality, high-reliability electronic connection solutions worldwide. Zltie's products are engineered for rapid...
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