JIS (Japanese Industrial Standard) Hex Nuts

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47 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

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	90438A110	000000
		M4 × 0.7 mm	7	4.2	10.5	0.6	ISO Class 8	JIS B 1190	100	90438A120	00000
		M5 × 0.8 mm	8	5	11.8	0.7	ISO Class 8	JIS B 1190	100	90438A130	00000
		M6 × 1 mm	10	6	14	0.8	ISO Class 8	JIS B 1190	100	90438A140	00000
		M8 × 1 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	10	90438A160	00000
		M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	25	90438A150	00000
		M10 × 1 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	10	90438A170	00000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	5	90438A180	0000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	90438A210	0000
		M12 × 1.75 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	90438A190	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	95108A108	00000
		M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	95108A104	0000
		M8 × 1.25 mm	12	8	17.5	1	ISO Class 10	JIS B 1190	50	95108A105	0000
		M10 × 1 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	1	95108A109	0000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	10	95108A106	00000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 10	JIS B 1190	25	95108A107	0000


		Black Phosphate-Coated Steel



				M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	95108A101	00000
				M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 10	JIS B 1190	100	95108A102	00000
				M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	50	95108A103	00000