20 mm Din Rails | McMaster-Carr

	Trade Size Trade Size

DIN 3

DIN 1

DIN 2

	System of Measurement System of Measurement

Metric

Inch

	Height Height

	Material Material

	Length Length

	Depth Depth

	Mounting Hole Center-to-Center Mounting Hole Center-to-Center

	Mounting Hole Diameter Mounting Hole Diameter

	Specifications Met Specifications Met

UL 94

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Width Width

	Mount Type Mount Type

	Number of Mounting Holes Number of Mounting Holes

	For DIN Rail Height For DIN Rail Height

15mm

32mm

35 mm

	Component Component

Stop

Spacer

	For DIN Rail Depth For DIN Rail Depth

5.5mm

7.5mm

15mm

	Color Color

	Black
	Gray
	Off-White

	Mounting Adapter Type Mounting Adapter Type

	Mounting Hole Thread Size Mounting Hole Thread Size

	For Manufacturer Series For Manufacturer Series

	For Manufacturer For Manufacturer

99 Products

DIN Rails

DIN 3 and 2 Rail

DIN 1 Rail

DIN 3 Rail with Bracket

DIN 3 Rail with Angled Bracket

DIN 3 Rail with Centerline

DIN 3 and 2 Rail

DIN 1 Rail

DIN 3 Rail with Bracket

DIN 3 Rail with Angled Bracket

Mount terminal blocks, power supplies, relays, and other control and distribution devices on walls and other flat surfaces and in enclosures. DIN 3 is the most commonly used rail.

Rails with a bracket create extra space behind them to accommodate bulky items. Rails with an angled bracket are tilted, letting you fit more of them into a vertical space. For easy access, position high-mounted devices so they’re tilted downwards and low-mounted devices so they’re tilted upwards.

On rails without mounting holes, drill holes where you need them. Rails with a centerline guide where you should drill.

For technical drawings and 3-D models, click on a part number.

							Mounting Holes, mm
DIN Rail Trade Size	Ht., mm	Lg.	Dp., mm	O'all Dp., mm	Material	Mounting Fasteners Included	Dia.	Ctr.-to-Ctr.	Specifications Met		Each
DIN Rails
3	35	1m	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	00000
3	35	1m	7.5	__	304 Stainless Steel	__	__	__	EN 50022, EN 60715	0000000	00000
3	35	1m	10	__	Aluminum	No	4.7	35.5	EN 50022, EN 60715	0000000	0000
3	35	1m	15	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	00000
3	35	2"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	2m	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	2m	7.5	__	304 Stainless Steel	__	__	__	EN 50022, EN 60715	0000000	00000
3	35	2m	15	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	00000
3	35	3 15/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	4 7/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	00000000	0000
3	35	5 7/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	6 7/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	00000000	0000
3	35	7 7/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	8 7/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	00000000	0000
3	35	9 13/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	10 13/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	00000000	0000
3	35	11 13/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	12 3/4"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	00000000	0000
3	35	13 3/4"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	15 3/4"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	17 11/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	19 11/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	21 11/16"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
3	35	23 5/8"	7.5	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
2	15	1m	5.5	__	Zinc-Plated Steel	No	4.2	20	EN 50022, EN 60715	0000000	0000
2	15	2m	5.5	__	Zinc-Plated Steel	No	4.2	20	EN 50022, EN 60715	0000000	0000
1	32	1m	15	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	0000
1	32	2m	15	__	Zinc-Plated Steel	No	6.3	25	EN 50022, EN 60715	0000000	00000
DIN Rails with Bracket
3	35	1m	7.5	58	Aluminum	No	5.5	75	EN 50022, EN 60715	0000000	00000
3	35	2m	7.5	58	Aluminum	No	5.5	75	EN 50022, EN 60715	0000000	00000
3	35	2m	7.5	120	Aluminum	No	5.5	75	EN 50022, EN 60715	0000000	00000
DIN Rails with Angled Bracket
3	35	1m	7.5	66	Aluminum	No	5.6	76	__	0000000	00000
3	35	2m	7.5	66	Aluminum	No	5.6	76	__	0000000	000000
DIN Rails with Centerline
3	35	1m	7.5	__	Zinc-Plated Steel	__	__	__	EN 50022, EN 60715	0000000	0000
3	35	1m	15	__	Zinc-Plated Steel	__	__	__	EN 50022, EN 60715	0000000	0000
3	35	2m	7.5	__	Zinc-Plated Steel	__	__	__	EN 50022, EN 60715	0000000	0000
3	35	2m	15	__	Zinc-Plated Steel	__	__	__	EN 50022, EN 60715	0000000	00000

Mounting Adapters for DIN Rails

Single-Clip Adapter for DIN 3 Rail

Single-Clip Adapter for DIN 1 Rail

Double-Clip Adapter for DIN 3 Rail

Panel-Clip Adapter for DIN 3 Rail

Spring Clip Adapter for DIN 3 Rail

Mount items not designed for DIN rail by attaching them to these adapters. Adapters clip onto the rail.

For large items that need more stability, use multiple adapters or choose an adapter with more than one mounting hole. Adapters with 12 and with 30 mounting holes have a panel for positioning multiple items together in whatever arrangement you need.

For technical drawings and 3-D models, click on a part number.

						Mounting Holes
For DIN Rail Trade Size	Ht., mm	Wd., mm	Dp., mm	Material	Mounting Fasteners Included	Dia.	Thread Size	No. of	Capacity, lbs.		Each
Single Clip
DIN 3	37	14	13	Steel	No	4mm	M4	1	__	0000000	00000
DIN 3	37	14	13	Steel	No	5mm	M5	1	__	0000000	0000
DIN 1	24	16	13	Steel	No	4mm	M4	1	__	0000000	0000
Double Clip
DIN 3	37	31	13	Steel	No	4mm	M4	2	__	0000000	0000
DIN 3	37	31	13	Steel	No	5mm	M5	2	__	0000000	0000
Panel Clip
DIN 3	48	48	12	Polyamide Plastic	No	1.9mm	__	12	__	0000000	0000
DIN 3	76	76	12	Polyamide Plastic	No	1.9mm	__	30	__	0000000	0000
Spring Clip
DIN 3	51	42	8	Aluminum	Yes	__	__	1	125	00000000	00000
DIN 3	51	75	8	Aluminum	Yes	__	__	2	125	00000000	00000
DIN 3	51	100	8	Aluminum	Yes	__	__	2	125	00000000	00000

Stops and Spacers for DIN Rails

Position terminal blocks, relays, and other components mounted to DIN rails with these stops and spacers. They are often used to create space between components for cooling, make wiring easier, and organize electrical panels and cabinets.

Stops stay fixed in place when you attach them to a DIN rail, keeping your components from sliding along the rail. For the most secure hold, use screw-on stops. As you tighten the screw, it wedges into place against the DIN rail. Snap-on stops are quick to install or remove—just snap them onto the DIN rail.

Group markers mount onto stops—label them for easy identification.

Spacers separate and organize components into groups. They slide along DIN rails, so you can shift components without having to remove the spacers.

Stops

Screw-On Stop (DIN 3)

Screw-On Stop (DIN 3 or 1)

Screw-On Stop (DIN 2)

Screw-On Stop (DIN 1)

Snap-On Stop (DIN 3)

DIN 3 and 2 Rail

DIN 1 Rail

Stops
For DIN Rail										Group Markers
Trade Size	Ht., mm	Dp., mm	Ht., mm	Wd., mm	Dp., mm	Color	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Screw On
Plastic
DIN 3	35	7.5, 15	45	8	32	Gray	10	0000000	00000	10	0000000	00000
DIN 3	35	7.5, 15	50	9.5	44.5	Gray	1	0000000	0000	10	0000000	0000
DIN 3 DIN 1	35 32	15 7.5, 15	44	9	34	Gray	10	0000000	0000	10	0000000	0000
DIN 3 DIN 1	35 32	15 7.5, 15	50	9	46	Gray	1	0000000	0000	10	0000000	0000
DIN 2	15	5.5	28	8	20	Gray	10	0000000	0000	10	0000000	0000
Zinc-Plated Steel
DIN 3	35	7.5	39.5	16	27	__	10	0000000	0000	10	0000000	0000
DIN 3	35	15	39.5	16	27	__	10	0000000	0000	10	0000000	0000
DIN 1	32	15	22.5	11.5	25	__	10	0000000	0000	10	0000000	0000
Snap On
Plastic
DIN 3	35	7.5, 15	41	6	35	Gray	5	0000000	0000	10	0000000	0000
DIN 3	35	15	41	10	35	Gray	10	0000000	00000	10	0000000	0000

Spacers

Snap-On Spacer (DIN 3 or 1)

DIN 1 Rail

DIN 3 and 2 Rail

For DIN Rail
Trade Size	Ht., mm	Dp., mm	Ht., mm	Wd., mm	Dp., mm	Color	Pkg. Qty.		Pkg.
Snap On
Plastic
DIN 3 DIN 1	35 32	15 7.5, 15	43	8	29	Black	10	0000000	00000

DIN-Rail Mounts for Development Boards

Protect development boards from dust, water, and debris by mounting them to DIN rails inside control cabinets. These mounts have an open-air design to keep boards cool and prevent them from overheating. They attach perpendicularly to DIN rails, taking up less space in your setup. Use the included cable ties to secure your cords to the mount and keep connections free from strain.

				For DIN Rail
For Manufacturer Series	Ht.	Wd.	Dp.	Ht., mm	Trade Size	Mounting Fasteners Included	Includes		Each
Nylon 6/6 Plastic
Arduino Uno, Mega	4 7/8"	3 1/2"	7/16"	35	DIN 3	Yes	Cable Ties	0000000	000000
Beaglebone Black, Green	5 5/8"	3 1/2"	7/16"	35	DIN 3	Yes	Cable Ties	0000000	00000
Raspberry Pi 2, 3, 4; Asus Tinker Board; O-Droid C2	3 5/8"	3 5/8"	7/16"	35	DIN 3	Yes	Cable Ties	0000000	00000
Raspberry Pi Zero	3 1/8"	2 7/8"	1/4"	35	DIN 3	Yes	Cable Ties	0000000	00000

Mounting Brackets for DIN Rails

Angled

Straight

Angled

Straight

Use these brackets for extra mounting space behind DIN rail to accommodate wiring and bulky items. Brackets with multiple DIN rail mounting holes hold several DIN rails on one set of brackets, so you don’t need to drill as many holes in your enclosure.

For technical drawings and 3-D models, click on a part number.

							Mounting Holes
For DIN Rail Trade Size	Ht., mm	Wd., mm	Dp., mm	Top Dp., mm	Material	Mounting Fasteners Included	Dia.	No. of	DIN Rail Mounting Fasteners Included	DIN Rail Mounting Hole Size (No. of)	Pkg. Qty.		Each
Angled
DIN 3, DIN 2, DIN 1	80	25	50	25	Zinc-Plated Steel	No	7 mm	2	Yes	M6 × 1 mm (1)	__	0000000	00000
DIN 3, DIN 2, DIN 1	97	18	48	32	Zinc-Plated Steel	No	4.3 mm	2	No	4.3 mm (1)	__	0000000	00000
Straight
DIN 3, DIN 2, DIN 1	80	20	25	__	Zinc-Plated Steel	No	7 mm	2	Yes	M6 × 1 mm (1)	__	0000000	0000
DIN 3, DIN 2, DIN 1	80	20	50	__	Zinc-Plated Steel	No	7 mm	2	Yes	M6 × 1 mm (1)	__	0000000	0000
DIN 3, DIN 2, DIN 1	80	20	70	__	Zinc-Plated Steel	No	7 mm	2	Yes	M6 × 1 mm (1)	__	0000000	0000
DIN 3, DIN 2, DIN 1	80	20	90	__	Zinc-Plated Steel	No	7 mm	2	Yes	M6 × 1 mm (1)	__	0000000	0000
													Pkg.
DIN 3, DIN 2, DIN 1	121	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (2), M5 × 0.8 mm (3)	2	0000000	00000
DIN 3, DIN 2, DIN 1	171	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (4), M5 × 0.8 mm (5)	2	0000000	00000
DIN 3, DIN 2, DIN 1	201	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (5), M5 × 0.8 mm (6)	2	0000000	00000
DIN 3, DIN 2, DIN 1	221	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (6), M5 × 0.8 mm (7)	2	0000000	00000
DIN 3, DIN 2, DIN 1	271	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (8), M5 × 0.8 mm (9)	2	0000000	00000
DIN 3, DIN 2, DIN 1	321	18	9	__	Zinc-Plated Steel	Yes	5 mm	2	No	4 mm (10), M5 × 0.8 mm (11)	2	0000000	00000

Adhesive-Back DIN Rails

1-lb. Capacity

16½-lb. Capacity

Stick this DIN rail in any enclosure to mount components without making screw holes that might leak. The adhesive backing and short length let you install these in tight spaces where a screwdriver wouldn’t fit. Adhesive reaches full capacity after 24 hours.

DIN rails meet UL 94 V-0, so if they catch fire, they’ll self-extinguish within 10 seconds and won’t spread the fire by dripping.

For technical drawings and 3-D models, click on a part number.

Capacity, lbs.	DIN Rail Trade Size	Height, mm	Length, mm	Overall Length, mm	Depth, mm	Material	Color	Specifications Met	Pkg. Qty.		Pkg.
1	3	35	27	43	14	Plastic	Black	UL 94 V-0	5	0000000	000000
16 1/2	3	35	66	71	15	Plastic	Black	UL 94 V-0	1	0000000	0000

Cable Clips for DIN Rails


Style B Installed (DIN Rail and Cable Not Included)	A	C	B
Style B Installed (DIN Rail and Cable Not Included)	A	C	B

Slide these clips on DIN rails—often used in equipment cabinet racks—to route and organize cables. Since these clips don’t require adhesive or screws, you can move them anywhere along the rail.

Style A and C clips have a C-shape design, allowing you to move, add, and remove cables more easily than those with an interlocking design. Use them for applications that require frequent cable adjustments.

Style B clips have an interlocking design to hold cables more securely than those with a C-shape design. They’re best for applications that don’t require frequent cable adjustments.

For added versatility, clips with a top or bottom cable entry location can be used to route cables on either side of your DIN rail.

For technical drawings and 3-D models, click on a part number.

					Inside
Style	For DIN Rail Trade Size	Height, mm	Width, mm	Depth, mm	Height, mm	Width, mm	Cable Entry Location	Material	Color	Mount Type	Specifications Met	Pkg. Qty.		Pkg.
C-Shape
A	DIN 3	15	15	10	5	11	Side	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	000000
A	DIN 1	15	15	10	5	11	Side	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	00000
C	DIN 3	11	11	10	5	6	Bottom, Top	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	00000
C	DIN 1	11	11	10	5	6	Bottom, Top	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	00000
Interlocking
B	DIN 3	15	16	10	5	11	Side	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	00000
B	DIN 1	15	16	10	5	11	Side	Nylon Plastic	Off-White	Slide On	UL 94 V-2	25	00000000	00000

Magnetic-Back DIN Rails

Mount and reposition components without drilling leaky holes in your steel enclosure—a strong magnet holds these DIN rails in place. Since they install without screws, they fit in spaces that are too small for a screwdriver.

DIN rails meet UL 94 V-0, which means they self-extinguish within 10 seconds and won’t spread fire by dripping.

For technical drawings and 3-D models, click on a part number.

Capacity, lbs.	DIN Rail Trade Size	Height, mm	Length, mm	Overall Length, mm	Depth, mm	Material	Color	Specifications Met		Each
6 1/2	3	35	66	71	15	Plastic	Black	UL 94 V-0	0000000	000000

Mounting Channels for Enclosures

Customize component placement without drilling leaky holes—these channels screw into the mounting bosses in your enclosure. Use strut channel nuts (sold separately) to add a DIN rail at any point along the channel, then clip on terminal blocks and other parts. To adjust spacing, loosen the strut channel nuts and slide the rail along the channel.

For technical drawings and 3-D models, click on a part number.

Channels

		Channel			Slot
Length	Material	Height	Width	Inside Channel Width	Width	Center-to-Center	End-to-Channel End	Pkg. Qty.		Pkg.
9 5/8"	Zinc-Plated Steel	13/32"	13/16"	7/16"	3/8"	8 13/16"	19/32"	2	0000000	0000000
13 5/8"	Zinc-Plated Steel	13/32"	13/16"	7/16"	3/8"	12 13/16"	19/32"	2	0000000	000000
17 5/8"	Zinc-Plated Steel	13/32"	13/16"	7/16"	3/8"	16 13/16"	19/32"	2	0000000	000000
21 5/8"	Zinc-Plated Steel	13/32"	13/16"	7/16"	3/8"	20 13/16"	19/32"	2	0000000	000000
57 5/8"	Zinc-Plated Steel	13/32"	13/16"	7/16"	3/8"	56 13/16"	19/32"	2	0000000	000000

Strut Channel Nuts

	For Strut Channel
Thread Size	Height	Width	Material	Pkg. Qty.		Pkg.
8-32	13/32"	13/16"	Steel	10	000000	00000
10-24	13/32"	13/16"	Steel	10	000000	0000
10-32	13/32"	13/16"	Steel	10	000000	0000
1/4"-20	13/32"	13/16"	Steel	10	000000	0000

DIN-Rail-Mount Hook and Loop Cable Ties

DIN 3 Rail

Route and organize wire, cable, and hose along your DIN rail. Unlike zip ties, these cable ties can be temporarily undone to add or remove material. Clip their base to DIN 3 rail, which is the most commonly used size. All meet UL 94 V-0, which means they quickly self-extinguish, making them good for hot and poorly ventilated environments such as server rooms.

					For DIN Rail
Lg.	For Max. Bundle Dia.	For Max. Number of Bundles	Wd.	Thick.	Ht., mm	Trade Size	For Use Outdoors	Specifications Met	Temp. Range, °F	Color		Each
Polyamide Plastic with Feed-Through Plastic Buckle
Two Way
6"	3/4"	1	3/8"	0.053"	35	DIN 3	Yes	UL 94 V-0	0° to 175°	Black	0000000	00000
7"	1 3/8"	1	3/4"	0.053"	35	DIN 3	Yes	UL 94 V-0	0° to 175°	Black	0000000	00000
8"	2 3/8"	1	3/4"	0.053"	35	DIN 3	Yes	UL 94 V-0	0° to 175°	Black	0000000	00000

DIN-Rail Cutters

DIN 3 and 2 Rail

DIN 1 Rail

DIN 3 Rail with Bracket

12 × 6.4 mm Hole

Pull the lever on these cutters to make smooth cuts in steel and aluminum DIN rail without leaving a bur. To cut the same length over and over, slide the stop along the ruler and clamp in place. Cutters mount to your workbench.

Cutters with hole punch stamp an oblong hole. Turn the die to cut a hole parallel or perpendicular to the rail.

							Mounting Holes
For Cutting Trade Size (Height × Depth × Overall Depth)	Height	Width	Length	Handle Length	Ruler Length	Mounting Fasteners Included	Number of	Diameter	Features		Each
DIN 3 Rail (35 × 7.5 mm) DIN 3 Rail (35 × 15 mm)	47"	6"	54"	40"	39"/100 cm	No	4	0.39"	__	0000000	000000000
DIN 3 Rail (35 × 7.5 mm) DIN 3 Rail (35 × 15 mm) DIN 3 Rail with Bracket (35 × 7.5 × 58 mm)	47"	6"	54"	40"	39"/100 cm	No	4	0.39"	__	0000000	00000000
DIN 3 Rail (35 × 7.5 mm) DIN 3 Rail (35 × 15 mm) DIN 2 Rail (15 × 5.5 mm) DIN 1 Rail (32 × 15 mm)	47"	6"	54"	40"	39"/100 cm	No	4	0.39"	12 × 6.4 mm Hole Punch	0000000	00000000