JIS (Japanese Industrial Standard) Nuts

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47 Products

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	000000000	000000


	M4 × 0.7 mm	7	3.2	ISO Class 8	JIS B 1181	100	000000000	00000
	M5 × 0.8 mm	8	4	ISO Class 8	JIS B 1181	100	000000000	00000
	M6 × 1 mm	10	5	ISO Class 8	JIS B 1181	50	000000000	00000
	M8 × 1.25 mm	12	6.5	ISO Class 8	JIS B 1181	25	000000000	00000
	M10 × 1.25 mm	14	8	ISO Class 8	JIS B 1181	10	000000000	00000
	M10 × 1.5 mm	14	8	ISO Class 8	JIS B 1181	5	000000000	0000
	M12 × 1.25 mm	17	10	ISO Class 8	JIS B 1181	5	000000000	0000


	Zinc-Yellow-Chromate-Plated Steel



			M3 × 0.5 mm	5.5	2.4	ISO Class 8	JIS B 1181	50	000000000	0000


			M4 × 0.7 mm	7	3.2	ISO Class 8	JIS B 1181	50	000000000	0000
			M5 × 0.8 mm	8	4	ISO Class 8	JIS B 1181	50	000000000	0000
			M6 × 1 mm	10	5	ISO Class 8	JIS B 1181	25	000000000	0000
			M8 × 1.25 mm	12	6.5	ISO Class 8	JIS B 1181	10	000000000	0000
			M10 × 1.25 mm	14	8	ISO Class 8	JIS B 1181	5	000000000	0000
			M10 × 1.5 mm	14	8	ISO Class 8	JIS B 1181	5	000000000	0000
			M12 × 1.25 mm	17	10	ISO Class 8	JIS B 1181	5	000000000	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	000000000	000000


	M4 × 0.7 mm	7	3.2	JIS B 1181	50	000000000	00000
	M5 × 0.8 mm	8	4	JIS B 1181	50	000000000	00000
	M6 × 1 mm	10	5	JIS B 1181	25	000000000	00000
	M8 × 1.25 mm	12	6.5	JIS B 1181	10	000000000	00000
	M10 × 1.25 mm	14	8	JIS B 1181	5	000000000	00000
	M12 × 1.75 mm	17	7	JIS B 1181	1	000000000	00000
	M14 × 2 mm	19	8	JIS B 1181	1	000000000	00000
	M16 × 2 mm	22	10	JIS B 1181	1	000000000	00000
	M18 × 2.5 mm	24	11	JIS B 1181	1	000000000	00000
	M20 × 2.5 mm	27	12	JIS B 1181	1	000000000	00000


	M22 × 2.5 mm	30	13	JIS B 1181	1	000000000	00000

JIS Flange Nuts

Fasten parts and components that are made to Japanese Industrial Standards. These nuts have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Since the flange covers a larger area than standard nuts, these are ideal for securing screws in oversized or irregularly shaped holes. Also known as collar nuts.

Medium-Strength Steel

Image of Product. Front orientation. Flange Nuts. JIS Flange Nuts.

Rated Grade 5, Grade F, or Class 8, these 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.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Fastener Strength Grade/Class	JIS Specification	Pkg. Qty.		Pkg.
Zinc-Plated Steel



		M3 × 0.5 mm	5.5	3.7	8	0.6	ISO Class 8	JIS B 1190	100	000000000	000000


		M4 × 0.7 mm	7	4.2	10.5	0.6	ISO Class 8	JIS B 1190	100	000000000	00000
		M5 × 0.8 mm	8	5	11.8	0.7	ISO Class 8	JIS B 1190	100	000000000	00000
		M6 × 1 mm	10	6	14	0.8	ISO Class 8	JIS B 1190	100	000000000	00000
		M8 × 1 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	10	000000000	00000
		M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	25	000000000	00000
		M10 × 1 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	10	000000000	00000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	5	000000000	0000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	000000000	0000
		M12 × 1.75 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	000000000	0000

High-Strength Steel

Rated Grade 8, Grade G, or Class 10, these are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, and motors. 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.

Black Phosphate-Coated Steel—The dark coating creates both a finished appearance and a barrier against rust that's more durable than clear zinc plating.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Fastener Strength Grade/Class	JIS Specification	Pkg. Qty.		Pkg.
Zinc-Plated Steel



		M5 × 0.8 mm	8	5	11.8	0.7	ISO Class 10	JIS B 1190	50	000000000	00000


		M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	000000000	0000
		M8 × 1.25 mm	12	8	17.5	1	ISO Class 10	JIS B 1190	50	000000000	0000
		M10 × 1 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	1	000000000	0000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	10	000000000	00000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 10	JIS B 1190	25	000000000	0000


		Black Phosphate-Coated Steel



				M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	000000000	00000


				M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 10	JIS B 1190	100	000000000	00000
				M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	50	000000000	00000