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What is 7/8 connector ?

Jan 30,2026
What is 7/8 connector ?

Introduction

In modern industrial automation and power distribution systems, reliable electrical connectivity is essential. One of the most widely used solutions for high-reliability connections is the 7/8 inch connector. Known for its rugged design, strong locking mechanism, and excellent environmental protection, the 7/8 connector plays a critical role in demanding industrial environments.

This article explains what a 7/8 connector is, its key features, typical applications, and why Connoder is a trusted supplier of high-performance 7/8 inch connector solutions.

What Is a 7/8 Connector?

A 7/8 connector is a type of circular electrical connector that uses a 7/8-inch threaded coupling for secure mating. The threaded design ensures excellent resistance to vibration, shock, and accidental disconnection, making it ideal for industrial power and signal transmission.
The term “7/8” refers specifically to the thread size of the coupling interface rather than the cable diameter. This standardized interface allows compatibility across a wide range of industrial devices and systems.
Circular Connectors (M16)
7/8 Circular Connectors
Rugged, compact and versatile — ideal when you need mixed power & signal plus environmental protection.

Key Features of a 7/8 Inch Connector

Rugged Circular Structure
7/8 inch connectors feature a robust circular housing, commonly manufactured from metal or reinforced plastic, offering excellent mechanical stability in harsh industrial environments.
Secure Threaded Locking
The threaded coupling mechanism prevents loosening caused by vibration or movement, ensuring long-term and reliable electrical connections.
Multiple Pin Configurations
Common configurations include 2-pin, 3-pin, 4-pin, 5-pin, and 6-pin designs, supporting various power and signal transmission requirements.
High Current & Environmental Protection
Compared with smaller circular connectors, 7/8 inch connectors typically support higher current and voltage. Most designs meet IP67 or higher protection ratings, providing resistance against dust, moisture, and water immersion.

Types of 7/8 Inch Connectors

Field-wireable connectors for flexible on-site installation
Pre-molded cable assemblies for quick and sealed deployment
Panel-mount and bulkhead connectors for fixed equipment installation
Standard male and female versions for industrial compatibility
Different types of 7/8 - inch connectors
Different types of 7/8 - inch connectors
A collection of multiple types of 7/8 - inch connectors, covering mainstream styles such as field wiring and panel - mounting. Pre - molded cable assemblies are available, meeting the installation requirements of various industrial scenarios, which are convenient and efficient.

Typical Applications of 7/8 Inch Connectors

Industrial Automation
Widely used to connect sensors, actuators, controllers, and I/O modules, ensuring stable signal and power transmission in factory automation systems.
Power Distribution & Machinery
Thanks to their high current capacity and mechanical strength, 7/8 inch connectors are commonly applied in industrial power distribution and heavy machinery.
Harsh Environment Equipment
With high IP ratings, these connectors perform reliably in environments exposed to oil, dust, moisture, vibration, and temperature variations.

Connoder – Professional 7/8 Inch Connector Manufacturer

Connoder is a professional manufacturer and supplier specializing in industrial circular connectors and cable assemblies. With years of experience in connector design and production, Connoder delivers reliable 7/8 inch connector solutions for global industrial customers.
According to our company profile ( https://www.connoder.com/aboutus.htm ), Connoder focuses on strict quality control, compliance with international standards, and long-term performance in harsh industrial environments.
Multiple pin configurations and connector structures
IP67 / IP68 / IP69K waterproof options
Durable materials and long service life
OEM / ODM customization and technical support
By choosing Connoder, customers gain not only reliable 7/8 inch connectors, but also a long-term technical partner for industrial connectivity solutions.
What is a 7/8 inch connector?
A 7/8 inch connector is a rugged circular electrical connector that uses a 7/8-inch threaded coupling for secure power and signal connections. It is commonly used in industrial automation, machinery, and harsh environments due to its vibration resistance and durable design.
What are the common pin configurations for a 7/8 connector?
7/8 inch connectors are available in multiple pin configurations, typically ranging from 2-pin to 6-pin, allowing flexibility for both power and signal transmission in various industrial applications.
What types of 7/8 inch connectors are available?
Common types include field-wireable connectors, pre-molded cable assemblies, and panel/bulkhead mount connectors. Both male and female versions are available to meet different installation requirements.
What are the advantages of using Connoder 7/8 inch connectors?
Connoder connectors offer high-quality materials, strict quality control, IP67/IP68/IP69K protection, multiple pin options, rugged threaded design, and OEM/ODM customization. They ensure reliable performance in harsh industrial environments.
7/8 Female Circular Connector-Field Wireable,Straight Plastic Assembled,Solder Connection,A code,
7/8" circular connector ‌ is a threaded connector with stable connection performance and reliable electrical connection.
7/8" Female circular connector Rear Fastened,with PCB welded screw 7/8-16UHF
7/8" circular connector ‌ is a threaded connector with stable connection performance and reliable electrical connection.
7/8" male circular connector Rear Fastened,with PCB welded screw 7/8-16UHF
7/8" circular connector ‌ is a threaded connector with stable connection performance and reliable electrical connection.
7/8" male circular connector Front Fastened,with PCB welded screw 7/8-16UHF
7/8" circular connector ‌ is a threaded connector with stable connection performance and reliable electrical connection.

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