Metric Split Lock Washers For Socket Head Screws

	System of Measurement System of Measurement

Metric

	For Screw Size For Screw Size

	Material Material

Stainless Steel

Steel

	Finish Finish

Black

Zinc Plated

	OD OD

	ID ID

	Washer Type Washer Type

	Split Lock

	Thickness Thickness

	Specifications Met Specifications Met

DIN

	Hardness Hardness

Rockwell C44

Not Rated

	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

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About Washers

Also known as high-collar lock washers, these have smaller outside diameters than standard split lock washers to fit neatly under socket head cap screws. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Zinc-plated steel washers are corrosion resistant in wet environments.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.

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

Steel with Zinc-Plated Finish
For Screw Size	ID, mm	OD, mm	Thick., mm	Hardness	Specifications Met	Pkg. Qty.		Pkg.
M3	3.4	5.6	0.9-1.1	Rockwell C44	DIN 7980	100	000000000	00000
M4	4.4	7.0	1.1-1.3	Rockwell C44	DIN 7980	100	000000000	0000
M5	5.4	8.8	1.5-1.7	Rockwell C44	DIN 7980	100	000000000	0000
M6	6.5	9.9	1.5-1.7	Rockwell C44	DIN 7980	100	000000000	0000
M8	8.5	12.7	1.9-2.1	Rockwell C44	DIN 7980	100	000000000	0000
M10	10.7	16.0	2.3-2.7	Rockwell C44	DIN 7980	100	000000000	00000
M12	12.7	18.0	2.3-2.7	Rockwell C44	DIN 7980	100	000000000	00000
M14	14.7	21.1	2.8-3.2	Rockwell C44	DIN 7980	50	000000000	00000
M16	17.0	24.4	3.3-3.7	Rockwell C44	DIN 7980	25	000000000	0000
M18	19.0	26.4	3.3-3.7	Rockwell C44	DIN 7980	25	000000000	00000
M20	21.2	30.6	4.3-4.7	Rockwell C44	DIN 7980	10	000000000	0000
M24	25.5	35.9	4.8-5.2	Rockwell C44	DIN 7980	10	000000000	0000
M27	28.5	38.9	4.8-5.2	Rockwell C44	DIN 7980	5	000000000	0000
M30	31.7	44.1	5.8-6.2	Rockwell C44	DIN 7980	5	000000000	00000
M36	37.7	52.2	6.7-7.3	Rockwell C44	DIN 7980	1	000000000	0000
Steel with Black Finish
M3	3.4	5.6	0.9-1.1	Rockwell C44	DIN 7980	100	000000000	0000
M3.5	3.9	6.1	0.9-1.1	Rockwell C44	DIN 7980	100	000000000	0000
M4	4.4	7.0	1.1-1.3	Rockwell C44	DIN 7980	100	000000000	0000
M5	5.4	8.8	1.5-1.7	Rockwell C44	DIN 7980	100	000000000	0000
M6	6.5	9.9	1.5-1.7	Rockwell C44	DIN 7980	100	000000000	0000
M8	8.5	12.7	1.9-2.1	Rockwell C44	DIN 7980	100	000000000	0000
M10	10.7	16.0	2.3-2.7	Rockwell C44	DIN 7980	100	000000000	00000
M12	12.7	18.0	2.3-2.7	Rockwell C44	DIN 7980	100	000000000	00000
M14	14.7	21.1	2.8-3.2	Rockwell C44	DIN 7980	100	000000000	00000
M16	17.0	24.4	3.3-3.7	Rockwell C44	DIN 7980	50	000000000	00000
M18	19.0	26.4	3.3-3.7	Rockwell C44	DIN 7980	25	000000000	0000
M20	21.2	30.6	4.3-4.7	Rockwell C44	DIN 7980	25	000000000	00000
M22	23.5	32.9	4.3-4.7	Rockwell C44	DIN 7980	10	000000000	0000
M24	25.5	35.9	4.8-5.2	Rockwell C44	DIN 7980	10	000000000	0000
M27	28.5	38.9	4.8-5.2	Rockwell C44	DIN 7980	5	000000000	0000
M30	31.7	44.1	5.8-6.2	Rockwell C44	DIN 7980	5	000000000	0000
M36	37.7	52.2	6.7-7.3	Rockwell C44	DIN 7980	1	000000000	0000
M42	43.7	60.2	7.7-8.3	Rockwell C44	DIN 7980	1	000000000	00000
M48	50.5	67.0	7.7-8.3	Rockwell C44	DIN 7980	1	000000000	00000
18-8 Stainless Steel
M3	3.4	5.6	0.9-1.1	Not Rated	DIN 7980	100	000000000	0000
M3.5	3.9	6.1	0.9-1.1	Not Rated	DIN 7980	100	000000000	0000
M4	4.4	7.0	1.1-1.3	Not Rated	DIN 7980	100	000000000	0000
M5	5.4	8.8	1.5-1.7	Not Rated	DIN 7980	100	000000000	0000
M6	6.5	9.9	1.5-1.7	Not Rated	DIN 7980	100	000000000	0000
M8	8.5	12.7	1.9-2.1	Not Rated	DIN 7980	100	000000000	0000
M10	10.7	16.0	2.3-2.7	Not Rated	DIN 7980	100	000000000	00000
M12	12.7	18.0	2.3-2.7	Not Rated	DIN 7980	50	000000000	0000
M14	14.7	21.1	2.8-3.2	Not Rated	DIN 7980	10	000000000	0000
M16	17.0	24.4	3.3-3.7	Not Rated	DIN 7980	10	000000000	0000
M18	19.0	26.4	3.3-3.7	Not Rated	DIN 7980	10	000000000	0000
M20	21.2	30.6	4.3-4.7	Not Rated	DIN 7980	10	000000000	00000
M22	23.5	32.9	4.3-4.7	Not Rated	DIN 7980	5	000000000	00000
M24	25.5	35.9	4.8-5.2	Not Rated	DIN 7980	5	000000000	0000
M27	28.5	38.9	4.8-5.2	Not Rated	DIN 7980	5	000000000	00000
M30	31.7	44.1	5.8-6.2	Not Rated	DIN 7980	1	000000000	00000
316 Stainless Steel
M3	3.4	5.6	0.9-1.1	Not Rated	DIN 7980	100	000000000	0000
M4	4.4	7.0	1.1-1.3	Not Rated	DIN 7980	100	000000000	0000
M5	5.4	8.8	1.5-1.7	Not Rated	DIN 7980	100	000000000	0000
M6	6.5	9.9	1.5-1.7	Not Rated	DIN 7980	100	000000000	0000
M8	8.5	12.7	1.9-2.1	Not Rated	DIN 7980	50	000000000	0000
M10	10.7	16.0	2.3-2.7	Not Rated	DIN 7980	50	000000000	00000
M12	12.7	18.0	2.3-2.7	Not Rated	DIN 7980	25	000000000	00000
M14	14.7	21.1	2.8-3.2	Not Rated	DIN 7980	10	000000000	0000
M16	17.0	24.4	3.3-3.7	Not Rated	DIN 7980	10	000000000	0000
M18	19.0	26.4	3.3-3.7	Not Rated	DIN 7980	10	000000000	0000
M20	21.2	30.6	4.3-4.7	Not Rated	DIN 7980	1	000000000	0000
M22	23.5	32.9	4.3-4.7	Not Rated	DIN 7980	1	000000000	0000
M24	25.5	35.9	4.8-5.2	Not Rated	DIN 7980	1	000000000	0000
M30	31.7	44.1	5.8-6.2	Not Rated	DIN 7980	1	000000000	00000

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Metric Split Lock Washers for Socket Head Screws