MYD Round Connector Screws: Precision Fastening for Electrical and Mechanical Interfaces

In electrical and mechanical assemblies, connector screws are often treated as minor components. In reality, their material quality, dimensional accuracy, and structural design directly affect connection stability, conductivity, and long-term reliability—especially in circular connector systems where alignment and retention are critical.

The MYD Round Connector Screws, manufactured from C3604 brass and available in multiple precision-machined specifications, are designed for applications that demand stable fastening, corrosion resistance, and consistent electrical performance.
Product reference: https://www.cncmyd.com/Circular-Connectors/productsround-connector-screws-c3604-multi-spec.html
Brand: Mingyuda Electronic Technology

This article approaches these connector screws from a design engineering and application-fit perspective, explaining how different sizes and structures support real-world industrial use.

Why round connector screws matter in system reliability

In circular connectors, screws do more than hold parts together. They influence:

• Mechanical alignment between mating components

• Contact stability under vibration or movement

• Electrical grounding and signal integrity

Poorly machined or mismatched screws can cause loosening, uneven contact pressure, or long-term wear—issues that are difficult to diagnose once systems are deployed.

Precision-machined round connector screws help eliminate these risks by ensuring predictable engagement and repeatable assembly results.

C3604 brass: a balanced material choice

All MYD round connector screws are manufactured from C3604 brass, a copper alloy widely used in precision components.

From an engineering standpoint, C3604 offers:

• Excellent machinability for tight tolerances and clean threads

• Good corrosion resistance in typical industrial environments

• Reliable electrical and thermal conductivity

This balance makes it suitable for components that must perform both mechanically and electrically, especially in connectors, terminals, and grounding structures.

Multi-spec design for different load and space conditions

Rather than using a single universal size, MYD provides multiple connector screw specifications to support different assembly requirements.

Type A – H22 × 20.6 mm

This specification is typically selected for:

• Larger circular connectors

• Applications requiring stronger mechanical anchoring

• Systems where current-carrying stability is important

The increased contact area helps improve fastening strength and structural stability in industrial-grade assemblies.

Type B – H15 × 18 mm

This more compact option is suitable for:

• Space-constrained assemblies

• Lightweight electrical and electronic systems

• Modular or portable equipment

Its smaller size supports high assembly density while maintaining accurate threading and stable engagement.

Type C – H26 × 15 × 18.5 mm (stepped structure)

This stepped-profile design is commonly used in:

• Layered or high-density connector systems

• Applications with specific seating or depth requirements

• Environments subject to vibration

The stepped geometry helps achieve precise positioning and reduces movement under dynamic conditions.

Precision machining and tolerance control

Connector screws must align perfectly with mating components. Even small deviations can lead to assembly difficulty or long-term reliability issues.

High-precision machining ensures:

• Consistent thread geometry

• Smooth surface finish

• Reliable repeatability across batches

For OEM manufacturers and system integrators, this consistency simplifies assembly and reduces quality variation in finished products.

Electrical and thermal performance considerations

Because connector screws often serve as part of the electrical path or grounding system, material choice and surface quality matter.

C3604 brass supports:

• Stable electrical conductivity

• Effective heat dissipation in compact assemblies

• Reduced risk of oxidation-related performance loss

This makes MYD round connector screws suitable for applications where electrical continuity is as important as mechanical fastening.

Resistance to vibration and operational stress

In automotive, industrial automation, and aerospace-related applications, connectors are exposed to:

• Continuous vibration

• Temperature changes

• Mechanical shock

Properly sized and machined round connector screws help maintain clamping force and reduce loosening over time, supporting longer service intervals and improved system reliability.

Typical application scenarios

MYD round connector screws are widely used in:

• Circular electrical connector assemblies

• Sensor and signal interface systems

• Automotive wiring harnesses and control units

• Industrial automation equipment

• Precision instruments and medical devices

Their versatility allows them to adapt to both electrical and mechanical fastening roles within the same system.

Why specification matching matters more than “one-size-fits-all”

Using an oversized or undersized connector screw can create hidden risks:

• Overstress on connector housings

• Insufficient contact pressure

• Difficulty during assembly or maintenance

By offering multiple specifications, MYD allows engineers to select the most appropriate screw based on connector size, load requirement, and installation space, improving overall system performance.

Manufacturer capability and production stability

As a precision metal component manufacturer, Mingyuda Electronic Technology focuses on:

• CNC machining accuracy

• Stable material sourcing

• Batch-to-batch dimensional consistency

For B2B buyers, this production stability is critical when connector screws are used across large product volumes or long-term programs.

What engineers typically confirm before selection

Before specifying round connector screws, engineers usually review:

1. Required dimensions and thread compatibility

2. Mechanical load and vibration conditions

3. Electrical grounding or conductivity needs

4. Environmental exposure (humidity, corrosion risk)

5. Assembly repeatability and maintenance access

Matching these factors ensures reliable integration into the final system.

A practical takeaway

MYD C3604 round connector screws are designed for applications where precision, conductivity, and mechanical stability must work together. With multiple specifications available, they support a wide range of circular connector and fastening requirements without forcing design compromises.

For OEMs and system integrators, selecting the right connector screw specification is a small decision that delivers outsized impact on assembly quality and long-term reliability.