JIS (Japanese Industrial Standard) Nuts

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JIS Specification

Thread Size

System of Measurement

Width

Thread Pitch

Height

Material

Hex Nut Profile

Thread Direction

Finish

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

Thread Type

Thread Spacing

Thread Fit

Fastener Strength Rating

Medium

Performance

Corrosion Resistant

DFARS Specialty Metals

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

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28 Products

About Hex Nuts

Choose a hex nut with the right profile, material, and strength for your application.

JIS Hex Nuts

Fasten parts and components that are made to Japanese Industrial Standards.

Medium-Strength Steel

These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	JIS Specification	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M3 × 0.5 mm	5.5	2.4	ISO Class 8	JIS B 1181	100	91028A411	000000
	M4 × 0.7 mm	7	3.2	ISO Class 8	JIS B 1181	100	91028A413	00000
	M5 × 0.8 mm	8	4	ISO Class 8	JIS B 1181	100	91028A415	00000
	M6 × 1 mm	10	5	ISO Class 8	JIS B 1181	50	91028A417	00000
	M8 × 1.25 mm	12	6.5	ISO Class 8	JIS B 1181	25	91028A419	00000
	M10 × 1.25 mm	14	8	ISO Class 8	JIS B 1181	10	91028A421	00000
	M10 × 1.5 mm	14	8	ISO Class 8	JIS B 1181	5	91028A111	0000
	M12 × 1.25 mm	17	10	ISO Class 8	JIS B 1181	5	91028A112	0000


	Zinc-Yellow-Chromate-Plated Steel



			M3 × 0.5 mm	5.5	2.4	ISO Class 8	JIS B 1181	50	94178A111	0000
			M4 × 0.7 mm	7	3.2	ISO Class 8	JIS B 1181	50	94178A112	0000
			M5 × 0.8 mm	8	4	ISO Class 8	JIS B 1181	50	94178A113	0000
			M6 × 1 mm	10	5	ISO Class 8	JIS B 1181	25	94178A114	0000
			M8 × 1.25 mm	12	6.5	ISO Class 8	JIS B 1181	10	94178A115	0000
			M10 × 1.25 mm	14	8	ISO Class 8	JIS B 1181	5	94178A117	0000
			M10 × 1.5 mm	14	8	ISO Class 8	JIS B 1181	5	94178A116	0000
			M12 × 1.25 mm	17	10	ISO Class 8	JIS B 1181	5	94178A118	0000

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Wd., mm	Ht., mm	JIS Specification	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M3 × 0.5 mm	5.5	2.4	JIS B 1181	50	91028A652	000000
	M4 × 0.7 mm	7	3.2	JIS B 1181	50	91028A655	00000
	M5 × 0.8 mm	8	4	JIS B 1181	50	91028A658	00000
	M6 × 1 mm	10	5	JIS B 1181	25	91028A661	00000
	M8 × 1.25 mm	12	6.5	JIS B 1181	10	91028A664	00000
	M10 × 1.25 mm	14	8	JIS B 1181	5	91028A667	00000
	M12 × 1.75 mm	17	7	JIS B 1181	1	91028A711	00000
	M14 × 2 mm	19	8	JIS B 1181	1	91028A712	00000
	M16 × 2 mm	22	10	JIS B 1181	1	91028A713	00000
	M18 × 2.5 mm	24	11	JIS B 1181	1	91028A714	00000


	M20 × 2.5 mm	27	12	JIS B 1181	1	91028A715	00000
	M22 × 2.5 mm	30	13	JIS B 1181	1	91028A716	00000