DIN Sealing Washers | McMaster-Carr

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	Specifications Met Specifications Met	Show

DIN

DIN 7603

DIN 125

	Specifications Met Specifications Met	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

	System of Measurement System of Measurement

Metric

	ID ID

	OD OD

	Material Material

Aluminum

Copper

Hard Fiber

	For Screw Size For Screw Size

	Thickness Thickness

	Washer Type Washer Type

	Flat

	Hardness Hardness

Rockwell R50

Not Rated

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

	Color Color

	Black

	Maximum Temperature Maximum Temperature

200° to 249° F

	Minimum Temperature Minimum Temperature

Not Rated

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

REACH Compliant

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About Washers

Also known as crush washers, these compress when tightened to form a tighter, more durable seal than rubber washers. They are commonly used to seal fluids such as oil and fuel. Washers are not reusable.

Copper washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.

Aluminum washers are lightweight and corrosion resistant in wet environments.

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

Copper
For Screw Size	ID, mm	OD, mm	Thick., mm	Specifications Met	Pkg. Qty.		Pkg.
M5	5.2	10.4	0.8-1.2	DIN 7603	25	000000000	000000
M6	6.2	9.9	0.8-1.2	DIN 7603	25	000000000	00000
M6	6.2	11.9	0.8-1.2	DIN 7603	50	000000000	00000
M6	6.2	12.4	1.3-1.7	DIN 7603	25	000000000	00000
M8	8.2	11.9	0.8-1.2	DIN 7603	50	000000000	00000
M8	8.2	12.4	1.3-1.7	DIN 7603	25	000000000	00000
M8	8.2	13.9	0.8-1.2	DIN 7603	50	000000000	00000
M10	10.2	13.9	0.8-1.2	DIN 7603	25	000000000	00000
M10	10.2	13.9	1.3-1.7	DIN 7603	10	000000000	0000
M10	10.2	15.9	1.3-1.7	DIN 7603	25	000000000	00000
M12	12.2	15.9	1.3-1.7	DIN 7603	25	000000000	00000
M12	12.2	16.2	0.8-1.2	DIN 7603	25	000000000	00000
M12	12.2	17.9	1.3-1.7	DIN 7603	25	000000000	00000
M14	14.2	17.9	0.8-1.2	DIN 7603	10	000000000	00000
M14	14.2	17.9	1.3-1.7	DIN 7603	10	000000000	00000
M14	14.2	19.9	1.3-1.7	DIN 7603	10	000000000	00000
M16	16.2	19.9	1.3-1.7	DIN 7603	10	000000000	00000
M16	16.2	21.9	1.3-1.7	DIN 7603	10	000000000	00000
M16	16.2	21.9	1.8-2.2	DIN 7603	10	000000000	00000
M18	18.2	21.9	1.3-1.7	DIN 7603	5	000000000	0000
M18	18.2	23.9	1.3-1.7	DIN 7603	10	000000000	00000
M20	20.2	23.9	1.3-1.7	DIN 7603	5	000000000	0000
M20	20.2	25.9	1.3-1.7	DIN 7603	5	000000000	00000
M22	22.2	26.9	1.3-1.7	DIN 7603	10	000000000	00000
M22	22.2	28.9	1.3-1.7	DIN 7603	10	000000000	00000
M24	24.3	29.9	1.8-2.2	DIN 7603	5	000000000	0000
M26	26.3	31.9	1.8-2.2	DIN 7603	5	000000000	0000
M28	28.3	35.9	1.3-1.7	DIN 7603	5	000000000	00000
M30	30.3	35.9	1.8-2.2	DIN 7603	5	000000000	00000
M32	32.3	37.9	1.8-2.2	DIN 7603	5	000000000	00000
M36	36.3	41.9	1.8-2.2	DIN 7603	5	000000000	00000
M36	36.3	43.9	1.8-2.2	DIN 7603	1	000000000	00000
M38	38.3	43.9	1.8-2.2	DIN 7603	1	000000000	00000
M42	42.3	48.9	1.8-2.2	DIN 7603	1	000000000	00000
M48	48.3	54.9	1.8-2.2	DIN 7603	1	000000000	00000
Aluminum
M6	6.2	9.9	0.8-1.2	DIN 7603	50	000000000	00000
M6	6.2	11.9	0.8-1.2	DIN 7603	50	000000000	00000
M8	8.2	11.9	0.8-1.2	DIN 7603	50	000000000	00000
M8	8.2	13.9	0.8-1.2	DIN 7603	10	000000000	0000
M10	10.2	13.9	0.8-1.2	DIN 7603	50	000000000	00000
M10	10.2	13.9	1.3-1.7	DIN 7603	10	000000000	0000
M10	10.2	15.9	0.8-1.2	DIN 7603	50	000000000	00000
M10	10.2	15.9	1.3-1.7	DIN 7603	10	000000000	0000
M12	12.2	15.9	1.3-1.7	DIN 7603	50	000000000	00000
M12	12.2	17.9	1.3-1.7	DIN 7603	50	000000000	00000
M14	14.2	17.9	1.3-1.7	DIN 7603	25	000000000	00000
M14	14.2	19.9	1.3-1.7	DIN 7603	25	000000000	00000
M16	16.2	19.9	1.3-1.7	DIN 7603	25	000000000	00000
M16	16.2	21.9	1.3-1.7	DIN 7603	10	000000000	0000
M18	18.2	21.9	1.3-1.7	DIN 7603	5	000000000	0000
M18	18.2	23.9	1.3-1.7	DIN 7603	10	000000000	00000
M20	20.2	23.9	1.3-1.7	DIN 7603	5	000000000	0000
M20	20.2	25.9	1.3-1.7	DIN 7603	10	000000000	00000
M22	22.2	26.9	1.3-1.7	DIN 7603	10	000000000	00000
M24	24.3	29.9	1.8-2.2	DIN 7603	10	000000000	00000
M24	24.3	31.9	1.8-2.2	DIN 7603	5	000000000	0000
M26	26.3	31.9	1.8-2.2	DIN 7603	10	000000000	00000

Metric Electrical-Insulating Plastic Washers

These washers are excellent electrical insulators.

Hard fiber washers are resistant to organic solvents and petroleum-based oils.

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

Hard Fiber
For Screw Size	ID, mm	OD, mm	Thick., mm	Max. Temperature, °F	Hardness	Specifications Met	Pkg. Qty.		Pkg.
Black
M2.5	2.7	6.5	0.4-0.6	230°	Not Rated	DIN 125	100	000000000	000000
M3	3.2	7.0	0.4-0.6	230°	Not Rated	DIN 125	100	000000000	00000
M4	4.3	9.0	0.7-0.9	230°	Not Rated	DIN 125	100	000000000	00000
M6	6.4	12.5	1.4-1.7	230°	Not Rated	DIN 125	50	000000000	0000
M8	8.4	17.0	1.4-1.7	230°	Not Rated	DIN 125	50	000000000	0000
M10	10.5	21.0	1.8-2.2	230°	Rockwell R50	DIN 125	50	000000000	00000
M12	13	24.0	2.1-2.5	230°	Rockwell R50	DIN 125	50	000000000	00000
M16	17	30.0	2.1-2.5	230°	Rockwell R50	DIN 125	25	000000000	0000
M20	21	37.0	2.1-2.5	230°	Rockwell R50	DIN 125	25	000000000	00000
M24	25	44.0	2.8-3.5	230°	Rockwell R50	DIN 125	10	000000000	0000
M30	31	56.0	2.8-3.6	230°	Rockwell R50	DIN 125	10	000000000	00000

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Metal Sealing Washers

Metric Electrical-Insulating Plastic Washers