M28 dual-head series
Dual-port metal USB-A, USB 3.0 and Type-C panel mount connectors for industrial equipment that needs two external data interfaces in one larger service position.
Series overview
Choose by the visible port pair first, then check the rear pair, panel opening and internal cable route.
M28 dual-head connectors are used when a control cabinet, test instrument, industrial PC or smart equipment panel needs two service interfaces without using two separate panel openings.
Start with the visible port pair, then decide whether the rear side keeps the same connector type or converts to USB-A or Type-C for the internal layout.
Front-to-rear port matrix
The model cards group each part by visible front pair and internal rear pair.
Open model data, mounting details and RFQ notes.
Two USB-A pass-through service ports in one M28 panel position.
Open model data, mounting details and RFQ notes.
Two Type-C ports on both visible and internal sides.
Open model data, mounting details and RFQ notes.
USB-A panel access with Type-C internal device-side integration.
Open model data, mounting details and RFQ notes.
Type-C panel access with USB-A internal connection requirements.
Open model data, mounting details and RFQ notes.
Mixed USB-A and Type-C access on both sides of the assembly.
Open model data, mounting details and RFQ notes.
Mixed panel access with USB-A based internal routing.
Open model data, mounting details and RFQ notes.
Mixed panel access with Type-C based internal routing.
Model number guide
MM, CC and MC show whether the connector uses double USB-A, double Type-C or a mixed USB-A plus Type-C pair.
Code decoder
In this example, the visible panel side is double USB-A female and the rear side is double Type-C.
Port pairing selection guide
Some M28 models look similar from the front but use different rear connections for internal routing.
The front pair needs to match the service workflow on the equipment panel.
The rear side decides how the connector fits the internal cable, device module or equipment board path.
Material / mounting / protection
The manual lists 304 stainless steel housing, 304 stainless steel lock nut, polycarbonate inner sleeve, NBR cover, blue aperture default and custom color support.
Applications
M28 fits panels where two USB or Type-C access points need to stay grouped in one mounted assembly.
M28 is useful when technicians need two accessible data ports in one durable panel position.
Two data ports can be grouped into one mounted interface instead of separate panel openings.
Front pair, rear pair, aperture color and cover requirement can be clarified before samples.
Specification / RFQ table
Collect the model, front pair, rear pair, mounting size and cover requirement before contact.
| RFQ field | M28 value to confirm | Why it matters |
|---|---|---|
| Front port pair | MM, CC or MC | Defines what operators see and plug into on the equipment panel. |
| Rear port pair | MM, CC or MC depending on model | Defines the internal equipment-side connection route. |
| Mounting size | M28 x 1.0, 28.5 mm mounting hole | Confirms the panel opening and lock-nut installation path. |
| Material | 304 stainless steel housing and lock nut | Supports industrial panel mounting and exposed interface durability. |
| Cover option | NBR dust and waterproof cover | Important for exposed ports, outdoor equipment or handling protection. |
| Custom option | Aperture color, rear route, sample quantity | Used for OEM quotation and sample confirmation. |
FAQ
These answers focus on dual-port connector selection, port-pair logic and the RFQ details needed before sampling.
It is a metal dual-head panel connector family for equipment that needs two USB-A or Type-C data ports in one M28 threaded mounting position.
Choose M28 when the equipment needs two external data ports grouped into one mounted assembly. Choose M22 when one compact external service port is enough.
MM means double USB-A female, CC means double Type-C, and MC means one USB-A female plus one Type-C in the same side of the connector.
Yes. The listed MC28 models cover mixed USB-A female plus Type-C layouts, including same mixed rear pairing or rear conversion to dual USB-A or dual Type-C.
Send the visible front pair, rear pair, panel opening, rear clearance, cover requirement, aperture color, sample quantity and expected order quantity.
Final RFQ CTA
For M28 dual-head connector projects, include the visible interface pair, internal rear pair, panel thickness, mounting opening, cover requirement and expected sample quantity.