Hardware Hex Jack Screws

Electronic Hex Jack Screws are available in steel with zinc or yellow zinc finishes, and in stainless steel. Similar to standoffs but with a longer protruding thread, they are commonly used in electronic applications, particularly for mounting D-Sub connectors.

Also known as Female Screw-Locks, Jack Screws allow you to choose the ideal male-thread length for your specific application. They can be purchased individually or in assembly and bulk kits, which include the necessary mounting hardware. The hexagonal design allows for easy wrench tightening, providing better torque. Stainless steel versions offer corrosion resistance, are nonmagnetic, and have a polished appearance. DFARS compliance certificates are available.

Hex Jack Screws are widely used to secure cable connectors in electronic devices or to connect two connector halves. A typical jack screw set includes flat washers, a lock washer, and a nut. These screws are produced to meet industry standards and can be customized for specific needs.

Commonly used in computers and electronic hardware, Hex Jack Screws feature a hex head and threaded body. They offer an internally threaded opening on one end and an externally threaded post on the other. The hex design ensures easy adjustments with a basic hex key (Allen wrench) for a secure fit, making them ideal for electronic equipment, telecom infrastructure, and scientific instruments.

Hex Jack Screws are essential for mounting connectors to metal panels in devices like computers or electronic enclosures. They ensure secure component alignment, crucial in intricate electronic assemblies. Their use helps optimize airflow, durability, and precision in sensitive parts such as circuit boards and optical components, where even minor adjustments can significantly impact functionality.

For reduced magnetic interference or corrosion resistance, brass or stainless steel jack screws are recommended, while steel zinc-plated versions offer a cost-effective solution.

Electronic Hex Jack Screws are hexagonal components with a threaded hole on one end and an externally threaded bolt on the other. Available in various types, these screws are designed for electronic assemblies, with the most common being the standard Hex Head Jack Screws, which allow easy tightening using a hex key (Allen wrench).

They are ideal for applications requiring secure fastening and precise alignment, such as mounting connectors and securing circuit boards. These screws are frequently used in high-end electronics and scientific instruments, where even small adjustments can significantly impact performance.

Product Types and Features

Hex Jack Screws come in specific sizes and materials to meet various electronic assembly needs. They all feature a #4-40 thread, and the external thread lengths range from 3/16″ to 3/4″. These screws are designed to match the thickness of panels or components to ensure a secure fit without over-tightening.

Optional Knurled Head: Some versions feature a knurled surface for improved grip, making manual adjustments easier without tools, ideal for frequent adjustments in tight spaces.

Materials and Coatings: Hex Jack Screws are made from durable materials like stainless steel, brass, or steel with coatings such as zinc, black oxide, or passivation to protect against corrosion and environmental factors. For applications requiring electrical insulation, screws may be coated with nylon or other materials to prevent electrical shorts.

Key Advantages:

• Precise Alignment: These screws allow for fine adjustments, ensuring accurate alignment in delicate electronic components.
• Durability: Designed for strength, Hex Jack Screws reduce the risk of stripping and provide long-lasting performance, even with frequent adjustments.
• Easy Maintenance: The hexagonal design allows for simple installation and adjustments using a hex key, making maintenance efficient and reducing the risk of tool slippage.

Common Applications:

• Electronic Equipment: Used in various electronic devices for securely connecting electrical components, such as securing D-type cable connectors.
• Computer Technology: Essential for securing devices like monitors and CPUs.
• PCBs: Maintain spacing in multi-layered circuit boards without disrupting performance.
• Industrial Machinery: Provide precise alignment and adjustment in automated machines and conveyor systems.

Jack screws are used in various components to ensure secure connections and prevent accidental disconnection. Here’s a list of common uses for jack screws in these devices:

1. Motherboard Connections

   • Securely fasten connectors (e.g., D-Sub, VGA, or serial ports) to the motherboard, providing stability and preventing loose connections.

2. I/O Shield Mounting

   • Help secure the I/O shield or back panel connectors to the chassis, ensuring proper alignment with external ports.

3. Expansion Cards (e.g., Graphics, Network Cards)

   • Fasten expansion cards to the motherboard or chassis using jack screws on brackets or mounting points.

4. Serial and Parallel Ports

   • Used to secure older legacy connectors like serial and parallel ports, which often utilize D-Sub connectors.

5. Display Connector Mounting (e.g., VGA, DVI, DisplayPort)

   • Secure external monitor connections to prevent accidental disconnection or movement of the cable.

6. Docking Stations and Port Replicators

   • Fasten connectors to docking station interfaces, ensuring a stable connection between the laptop and the docking station.

7. Internal Data Connectors (e.g., SCSI, SAS)

   • Secure high-speed data connections inside workstations or servers that use D-Sub or similar connectors.

8. Peripheral Connection Ports (e.g., COM ports)

   • Fasten connectors for various peripheral devices to maintain stable connections, especially in industrial or specialized desktops.

9. LCD Screen Mounting in Laptops

   • Secure the LCD connector and related hardware inside the laptop screen assembly.

10. Power Connectors (e.g., DC-IN connectors in desktops)

• Help secure power connectors that use jack screws for stable power supply connections.

Jack screws are essential for maintaining the integrity of connections and components in laptops and desktops, especially in high-use or high-vibration scenarios.

We distribute a wide range of Hex Jack Screws, contact our team for a custom quote. Our sales staff is ready to assist with any inquiries.