Metal DIN Rail Mounting Brackets (DINM20/21/23/23LR/24)

DINM20 (Device Side)

DINM20 (Device Side)
(click image to enlarge)
  • Sturdy metal construction
  • Versatile design
  • Clips onto 35mm DIN rail
  • Five styles available
  • DIN Rail sold separately

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See Also: DIN Rail,   More DIN Clips


General Description

These sturdy steel DIN rail mounting brackets are useful for mounting a wide variety of devices onto standard 35 mm DIN rail. They feature a flat mounting surface and pre-drilled mounting holes, which, depending on the model, are threaded and/or unthreaded. These brackets very easily attach and detach from a DIN rail while maintaining high rigidty and load capacity: the bracket latches onto both the top and bottom lips of the rail with the fixed (non spring-loaded) end of the bracket on the top of the rail to bear the weight of its device.

Five models are available. They vary in size, mounting hole style, ways in which they can be detached from a DIN rail, and amount of rail clearance. The differences between each model can be seen below:

Each bracket includes either threaded or unthreaded mounting holes. Threaded mounting holes are meant to be used with M4 machine screws. You can simply insert the screw through your device and through the bracket without needing to use any nuts. Unthreaded holes, on the other hand, are meant to be used with rivets or screws and nuts. Install and remove these brackets from a DIN rail by pushing down the top or pulling down the bottom of its release handle. This compresses the spring which allows the sliding hooks to disengage from the rail. With some brackets, you can also lift up the device and pivot it away from the rail in order to remove it. Some of these brackets have a bumper that is wider than the others. This makes the space between the rail and the bracket  (the rail clearance) smaller, which limits the movement of the bracket on the rail. With these brackets, the release handle must be utilized in installation and removal on a DIN rail. A DINM20 bracket is 44.2 mm wide, has two unthreaded mounting holes, can be detached from a DIN rail by pulling the release handle, and has less rail clearance. A DINM21 bracket is 44.2 mm wide, has six M4 threaded mounting holes, can be detached from a DIN rail by pulling the release handle or lifting and pivoting, and has more rail clearance. A DINM23 bracket is 25 mm wide, has two M4 threaded mounting holes, can be detached from a DIN rail by pulling the release handle or lifting and pivoting, and has more rail clearance. A DINM23LR bracket is 25 mm wide, has two M4 threaded mounting holes, can be detached from a DIN rail by pulling the release handle, and has less rail clearance. A DINM24 bracket is 52 mm wide, has two M4 threaded and four unthreaded mounting holes, can be detached from a DIN rail by pulling the release handle or lifting and pivoting, and has more rail clearance.

Rail Clearance

As shown in the images below, the width of the bumper impacts how much space exists between the bracket and the DIN rail. Brackets with a larger bumper have a smaller rail clearance, while brackets with a smaller bumper have a larger rail clearance.


Brackets with a wider bumper have less space between the bracket and the DIN rail.
Less Rail Clearance
Click image to enlarge.
Brackets with a smaller bumper have more space between the bracket and the DIN rail.
More Rail Clearance
Click image to enlarge.

A smaller rail clearance restricts movement of the bracket on the rail, making the assembly more rigid for unusual side loading or rotational forces. This can be helpful, for example, when dealing with arrangments that have unusually stiff cables.


Less rail clearance restricts the movement of the bracket on the rail.
Less Rail Clearance
Click image to enlarge.
More rail clearance increases the movement of the bracket on the rail, but allows for easier removal.
More Rail Clearance
Click image to enlarge.

Less rail clearance keeps the bracket in place, even when unusually stiff cables are involved in the assembly.
Less Rail Clearance with
Unusually Stiff Cable Assembly

Click image to enlarge.
More rail clearance is less likely to keep the bracket from twisting on the rail.
More Rail Clearance with
Unusually Stiff Cable Assembly

Click image to enlarge.

Removal from a Rail

DINM20 & DINM23LR

To remove these brackets from a DIN rail, either pull the release handle from the bottom edge of the bracket, or push the handle down from the top edge of the bracket. This releases the sliding hooks that grip the bottom of the rail and allows the bottom edge of the bracket to swing out away from the DIN rail. The entire bracket can then be lifted off the DIN rail.

Because these models have less rail clearance, the release handle must be actuated in order for the bracket to be able to move far enough away from the rail to detach. For this reason, the lift and pvot method will not work.


Use the release handle to remove the DINM23LR and DINM20 (brackets with less rail clearance) from a DIN rail.
DINM23LR & DINM20 Removal Illustration
Click image to enlarge.

DINM21, DINM23, & DINM24

You can also use the release handle to remove these brackets from the rail. A simpler method, however, is to push up on the mounted device, pivot the top of the device out away from the rail, and lower the entire device off the rail. This technique is possible because of the larger amount of rail clearance, and does not require access to the release handle which makes this method easier.


To remove the DINM21, DINM23, and DINM24 (brackets with more rail clearance) from a DIN rail, push and pivot the bracket off of the rail.
DINM21, DINM23, & DINM24 Removal Illustration
Click image to enlarge.

Mounting Hardware

DINM20 & DINM24

The DINM20 has two and the DINM24 has four unthreaded 4mm diameter mounting holes. The holes in this bracket can accommodate M4 machine screws, #6 machine screws, or #6 sheet metal screws. Please note that the M4 hardware (sold separately below) will not work well with the DINM20 clips if the screw heads are located on the bottom side of the clips.

DINM21, DINM23, DINM23LR, DINM24

The DINM21, DINM23, DINM23LR, and DINM24 contain M4 threaded mounting holes. Winford offers M4 machine screws (sold separately below) that work well with these clips.

Product Documents

Part #DescriptionPDF DrawingDWG DrawingIGES ModelSTEP Model
DINM20Steel DIN Clip, Unthreaded holes, 44.2mm width
DINM21Steel DIN Clip, Threaded holes, 44.2mm width
DINM23Steel DIN Clip, Threaded holes, 25mm width
DINM24Steel DIN Clip, Threaded and Unthreaded holes, 52mm width
DINM20
Steel DIN Clip, Unthreaded holes, 44.2mm width
DINM21
Steel DIN Clip, Threaded holes, 44.2mm width
DINM23
Steel DIN Clip, Threaded holes, 25mm width
DINM24
Steel DIN Clip, Threaded and Unthreaded holes, 52mm width

Product Details

  • Nickel-plated steel
  • Sturdy metal construction
  • Clips onto 35mm DIN rail
  • Five styles available
  • DIN Rail sold separately


Pricing and Ordering

Product # Description 1+ 10+ 100+ RoHS Buy Now
DINM20 DIN Rail Mounting Clip, Steel, 44.2mm Width, Unthreaded Holes $3.50 $3.25 $2.85 Yes
DINM21 DIN Rail Mounting Clip, Steel, 44.2mm Width, Threaded Holes $3.50 $3.25 $2.85 Yes
DINM23 DIN Rail Mounting Clip, Steel, 25mm Width, Threaded Holes $3.40 $3.15 $2.75 Yes
DINM23LR DIN Rail Mounting Clip, Steel, 25mm Width, Threaded Holes, Latch Release $3.40 $3.15 $2.75 Yes
DINM24 DIN Rail Mounting Clip, Steel, 52mm Width, Threaded and Unthreaded Holes $3.50 $3.25 $2.85 Yes
DINM20
DIN Rail Mounting Clip, Steel, 44.2mm Width, Unthreaded Holes
RoHS: Yes
Buy Now:
QuantityPrice
1+$3.50
10+$3.25
100+$2.85
DINM21
DIN Rail Mounting Clip, Steel, 44.2mm Width, Threaded Holes
RoHS: Yes
Buy Now:
QuantityPrice
1+$3.50
10+$3.25
100+$2.85
DINM23
DIN Rail Mounting Clip, Steel, 25mm Width, Threaded Holes
RoHS: Yes
Buy Now:
QuantityPrice
1+$3.40
10+$3.15
100+$2.75
DINM23LR
DIN Rail Mounting Clip, Steel, 25mm Width, Threaded Holes, Latch Release
RoHS: Yes
Buy Now:
QuantityPrice
1+$3.40
10+$3.15
100+$2.75
DINM24
DIN Rail Mounting Clip, Steel, 52mm Width, Threaded and Unthreaded Holes
RoHS: Yes
Buy Now:
QuantityPrice
1+$3.50
10+$3.25
100+$2.85

Mounting Hardware

We offer metric mounting hardware for the threaded holes on the DINM21, DINM23, DINM23LR, and DINM24 clips.
(Note that the large heads on these screws prevent them from working well with the DINM20 clips if the screw heads are located on the bottom side of the clip.)
Product # Description 1+ 5+ 10+ RoHS Buy Now
SCMAPP-M4-A-8-100 Screw, Machine, Pan Head, Phillips, M4 Thread, 8mm Length, Bag of 100 $4.75 $4.35 $3.85 Yes
SCMAPP-M4-A-10-100 Screw, Machine, Pan Head, Phillips, M4 Thread, 10mm Length, Bag of 100 $4.80 $4.40 $3.90 Yes
SCMAPP-M4-A-12-100 Screw, Machine, Pan Head, Phillips, M4 Thread, 12mm Length, Bag of 100 $4.85 $4.45 $3.95 Yes
SCMAPP-M4-A-8-100
Screw, Machine, Pan Head, Phillips, M4 Thread, 8mm Length, Bag of 100
RoHS: Yes
Buy Now:
QuantityPrice
1+$4.75
5+$4.35
10+$3.85
SCMAPP-M4-A-10-100
Screw, Machine, Pan Head, Phillips, M4 Thread, 10mm Length, Bag of 100
RoHS: Yes
Buy Now:
QuantityPrice
1+$4.80
5+$4.40
10+$3.90
SCMAPP-M4-A-12-100
Screw, Machine, Pan Head, Phillips, M4 Thread, 12mm Length, Bag of 100
RoHS: Yes
Buy Now:
QuantityPrice
1+$4.85
5+$4.45
10+$3.95

All of the above items are normally stocked. Please call us if you need to verify availability for a specific quantity, or for pricing at higher quantities. Please visit our ordering page for our ordering policies and a list of ordering methods.