JIS (Japanese Industrial Standard) Hex Nuts

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	Specifications Met Specifications Met	Show

JIS

JIS B 1181

JIS B 1190

	Specifications Met Specifications Met	Hide

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

	System of Measurement System of Measurement

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Thread Type Thread Type

Metric

	Width Width

	Height Height

	Nut Type Nut Type


Flange	Hex

	Material Material

Stainless Steel

Steel

	Hex Nut Profile Hex Nut Profile

	Standard

	Thread Direction Thread Direction

	Right Hand

	Finish Finish

Black Phosphate

Zinc Plated

Zinc Yellow-Chromate Plated

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Class 8	Class 10

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	Drive Style Drive Style

	External Hex

	Thread Fit Thread Fit

Class 6H

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Flange Diameter Flange Diameter

	Flange Thickness Flange Thickness

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

REACH Compliant

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47 Products

About Nuts, Materials, and Finishes

These metric nuts meet JIS (Japanese Industrial Standard) B 1181. Made from Class 8 steel, they're suitable for fastening most machinery and equipment. With a zinc-plated or zinc yellow-chromate plated finish, all resist corrosion in wet environments.

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

Thread
Size	Pitch, mm	Wd., mm	Ht., mm	Specifications Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel—Class 8
M3	0.5	5.5	2.4	JIS B 1181	100	000000000	000000
M4	0.7	7	3.2	JIS B 1181	100	000000000	00000
M5	0.8	8	4	JIS B 1181	100	000000000	00000
M6	1	10	5	JIS B 1181	50	000000000	00000
M8	1.25	12	6.5	JIS B 1181	25	000000000	00000
M10	1.25	14	8	JIS B 1181	10	000000000	00000
M10	1.5	14	8	JIS B 1181	5	000000000	0000
M12	1.25	17	10	JIS B 1181	5	000000000	0000
Zinc Yellow-Chromate Plated Steel—Class 8
M3	0.5	5.5	2.4	JIS B 1181	50	000000000	0000
M4	0.7	7	3.2	JIS B 1181	50	000000000	0000
M5	0.8	8	4	JIS B 1181	50	000000000	0000
M6	1	10	5	JIS B 1181	25	000000000	0000
M8	1.25	12	6.5	JIS B 1181	10	000000000	0000
M10	1.25	14	8	JIS B 1181	5	000000000	0000
M10	1.5	14	8	JIS B 1181	5	000000000	0000
M12	1.25	17	10	JIS B 1181	5	000000000	0000

JIS 18-8 Stainless Steel Hex Nuts

These metric nuts meet JIS (Japanese Industrial Standard) B 1181. Made from 18-8 stainless steel, they're chemical resistant and may be mildly magnetic.

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

Thread
Size	Pitch, mm	Wd., mm	Ht., mm	Specifications Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel
M3	0.5	5.5	2.4	JIS B 1181	50	000000000	000000
M4	0.7	7	3.2	JIS B 1181	50	000000000	00000
M5	0.8	8	4	JIS B 1181	50	000000000	00000
M6	1	10	5	JIS B 1181	25	000000000	00000
M8	1.25	12	6.5	JIS B 1181	10	000000000	00000
M10	1.25	14	8	JIS B 1181	5	000000000	00000
M12	1.75	17	7	JIS B 1181	1	000000000	00000
M14	2	19	8	JIS B 1181	1	000000000	00000
M16	2	22	10	JIS B 1181	1	000000000	00000
M18	2.5	24	11	JIS B 1181	1	000000000	00000
M20	2.5	27	12	JIS B 1181	1	000000000	00000
M22	2.5	30	13	JIS B 1181	1	000000000	00000

JIS High-Strength Steel Flange Nuts

These metric nuts meet JIS (Japanese Industrial Standard) B 1190. They have a flange that distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. About 25% stronger than medium-strength steel flange nuts, they're comparable in strength to Class 10.9 bolts. Height includes the flange.

When choosing your finish, consider your environment. Zinc-plated nuts have a layer of zinc that protects the steel under it from rust, extending the life of the nuts. A black-phosphate finish shields nuts from rusting, even amid oil and grease.

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

Thread				Flange
Size	Pitch, mm	Wd., mm	Ht., mm	Dia., mm	Thick., mm	Specifications Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel—Class 10
M5	0.8	8	5	11.8	0.7	JIS B 1190	50	000000000	00000
M6	1	10	6	14	0.8	JIS B 1190	100	000000000	0000
M8	1.25	12	8	17.5	1	JIS B 1190	50	000000000	0000
M10	1	14	10	21	1.2	JIS B 1190	1	000000000	0000
M10	1.25	14	10	21	1.2	JIS B 1190	10	000000000	00000
M12	1.25	17	11.5	25	1.4	JIS B 1190	25	000000000	0000
Black-Phosphate Steel—Class 10
M6	1	10	6	14	0.8	JIS B 1190	100	000000000	00000
M8	1.25	12	8	17.5	1.1	JIS B 1190	100	000000000	00000
M10	1.25	14	10	21	1.2	JIS B 1190	50	000000000	00000

JIS Medium-Strength Steel Flange Nuts

Made to Japanese Industrial Standards, these nuts fasten most Japanese machinery and equipment without a washer. Their flange distributes pressure where the nut meets the material surface, so there’s no need for a washer. Zinc plated, these nuts won’t rust.

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

Thread				Flange
Size	Pitch, mm	Width, mm	Height, mm	Diameter, mm	Thickness, mm	Specifications Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel—Class 8
M3	0.5	5.5	3.7	8	0.6	JIS B 1190	100	000000000	000000
M4	0.7	7	4.2	10.5	0.6	JIS B 1190	100	000000000	00000
M5	0.8	8	5	11.8	0.7	JIS B 1190	100	000000000	00000
M6	1	10	6	14	0.8	JIS B 1190	100	000000000	00000
M8	1	12	8	17.5	1.1	JIS B 1190	10	000000000	00000
M8	1.25	12	8	17.5	1.1	JIS B 1190	25	000000000	00000
M10	1	14	10	21	1.2	JIS B 1190	10	000000000	00000
M10	1.25	14	10	21	1.2	JIS B 1190	5	000000000	0000
M12	1.25	17	11.5	25	1.4	JIS B 1190	5	000000000	0000
M12	1.75	17	11.5	25	1.4	JIS B 1190	5	000000000	0000

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About Nuts, Materials, and Finishes

JIS Medium-Strength Steel Hex Nuts

JIS 18-8 Stainless Steel Hex Nuts

JIS High-Strength Steel Flange Nuts

JIS Medium-Strength Steel Flange Nuts