JIS (Japanese Industrial Standard) Nuts

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105 Products

JIS Hex Nuts

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

Medium-Strength Steel

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

These Grade 5, Grade C, 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	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M3 × 0.5 mm	5.5	2.4	Class 8	JIS B 1181	—	100	91028A411	000000


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


	Zinc-Yellow-Chromate-Plated Steel



			M3 × 0.5 mm	5.5	2.4	Class 8	JIS B 1181	—	50	94178A111	0000


			M4 × 0.7 mm	7	3.2	Class 8	JIS B 1181	—	50	94178A112	0000
			M5 × 0.8 mm	8	4	Class 8	JIS B 1181	—	50	94178A113	0000
			M6 × 1 mm	10	5	Class 8	JIS B 1181	—	25	94178A114	0000
			M8 × 1.25 mm	12	6.5	Class 8	JIS B 1181	—	10	94178A115	0000
			M10 × 1.5 mm	14	8	Class 8	JIS B 1181	—	5	94178A116	0000
			M10 × 1.25 mm	14	8	Class 8	JIS B 1181	Material Certificate	5	94178A117	0000
			M12 × 1.25 mm	17	10	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	Certificate Type	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	Material Certificate	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	Material Certificate	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	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel



		M3 × 0.5 mm	5.5	3.7	8	0.6	Class 8	JIS B 1190	—	100	90438A110	000000


		M4 × 0.7 mm	7	4.2	10.5	0.6	Class 8	JIS B 1190	Material Certificate	100	90438A120	00000
		M5 × 0.8 mm	8	5	11.8	0.7	Class 8	JIS B 1190	—	100	90438A130	00000
		M6 × 1 mm	10	6	14	0.8	Class 8	JIS B 1190	—	100	90438A140	00000
		M8 × 1.25 mm	12	8	17.5	1.1	Class 8	JIS B 1190	—	25	90438A150	00000
		M8 × 1 mm	12	8	17.5	1.1	Class 8	JIS B 1190	—	10	90438A160	00000
		M10 × 1.25 mm	14	10	21	1.2	Class 8	JIS B 1190	—	5	90438A180	0000
		M10 × 1 mm	14	10	21	1.2	Class 8	JIS B 1190	—	10	90438A170	00000
		M12 × 1.75 mm	17	11.5	25	1.4	Class 8	JIS B 1190	—	5	90438A190	0000
		M12 × 1.25 mm	17	11.5	25	1.4	Class 8	JIS B 1190	—	5	90438A210	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 withstands occasional exposure to moisture.

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



		M5 × 0.8 mm	8	5	11.8	0.7	Class 10	JIS B 1190	—	50	95108A108	000000


		M6 × 1 mm	10	6	14	0.8	Class 10	JIS B 1190	Material Certificate	100	95108A104	0000
		M8 × 1.25 mm	12	8	17.5	1	Class 10	JIS B 1190	Material Certificate	50	95108A105	0000
		M10 × 1.25 mm	14	10	21	1.2	Class 10	JIS B 1190	Material Certificate	10	95108A106	00000
		M10 × 1 mm	14	10	21	1.2	Class 10	JIS B 1190	—	1	95108A109	0000
		M12 × 1.25 mm	17	11.5	25	1.4	Class 10	JIS B 1190	Material Certificate	25	95108A107	0000


		Black Phosphate-Coated Steel



				M6 × 1 mm	10	6	14	0.8	Class 10	JIS B 1190	—	100	95108A101	00000


				M8 × 1.25 mm	12	8	17.5	1.1	Class 10	JIS B 1190	—	100	95108A102	00000
				M10 × 1.25 mm	14	10	21	1.2	Class 10	JIS B 1190	Material Certificate	50	95108A103	00000

BT Taper Collet Chucks

Hold collets tightly in CNC machines with BT taper spindles when milling, drilling, and routing. Made from high-grade chrome-moly steel, these chucks remain rigid and accurate while resisting wear—even at high speeds. Their shank is also precision ground to the industry standard AT3 tolerance for a secure fit that minimizes runout in your machine spindle. These chucks meet JIS or MAS standards for compatibility across machines with BT spindles. Internal threads on the shank let you attach a retention knob, so you can connect these chucks to your machine’s drawbar system. Insert your collet and tighten the nut to clamp your tool in place.

You can route coolant through them to extend the life of your bit and clear chips. If your machine has a through-spindle coolant system (TSC), use these chucks with an ER coolant control collet for the best results.

To maximize grip and minimize runout, choose a chuck where your tool diameter falls in the middle of the bit shank size range.

Chucks balanced to G 2.5 vibrate less than chucks balanced to G 6.3, so your collets, bits, and spindle will last longer. Chucks balanced to G 6.3 are a cost-effective option that is good for most machining tasks.

BT 30 Machine Taper

Image of Product. Front orientation. Contains Annotated. Milling Machine Collet Chucks. BT Taper Collet Chucks.

Collet Stop Screw—Chucks with a collet stop screw set the tool depth in the chuck for consistent, repeatable performance when you change tools.

RFID Chip Hole—Chucks with an RFID chip hole can hold a small RFID tag for automatic tool identification and tracking.

	Milling Machine Collet Chucks											Wrenches		Spanner Wrenches		Replacement Nuts
	For Collet Type	For Bit Shank Size	Projection	Total Indicated Runout (TIR) Accuracy	Collet Nut Type	Coolant Delivery Type	Features	Specs. Met	JIS Specification		Each		Each		Each		Each
2.5 mm/s @ 25,000 rpm







				Hardened Chrome-Moly Steel

				ER-11	0.019" to 0.275"	2.76" (70 mm)	0.0001"	Miniature Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N11	0000000	———	0	8238N15	000000	9502N41	000000


				ER-16	0.019" to 0.406"	2.36" (60 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N12	000000	3215A441	000000	———	0	9615N31	00000
				ER-16	0.019" to 0.406"	3.54" (90 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N13	000000	3215A441	00000	———	0	9615N31	00000
				ER-20	0.039" to 0.551"	2.76" (70 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N14	000000	1721N15	00000	———	0	9615N32	00000
				ER-25	0.039" to 0.629"	2.76" (70 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N15	000000	5699N128	00000	———	0	9615N35	00000
				ER-32	0.078" to 0.787"	2.76" (70 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N16	000000	3321A32	00000	———	0	9615N36	00000
				ER-32	0.078" to 0.787"	3.94" (100 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N17	000000	3321A32	00000	———	0	9615N36	00000


				2.5 mm/s @ 30,000 rpm







								Hardened Nickel Chrome-Moly Steel

								ER-8	0.019" to 0.197"	4"	0.0001"	Miniature Slotted Nut	Through Bore	Collet Stop Screw	ISO 7388-2	JIS B 6339	9483N41	000000	———	0	———	0	9502N25	00000

BT 40 Machine Taper

Collet Stop Screw—Chucks with a collet stop screw set the tool depth in the chuck for consistent, repeatable performance when you change tools.

RFID Chip Hole—Chucks with an RFID chip hole can hold a small RFID tag for automatic tool identification and tracking.

	Milling Machine Collet Chucks											Wrenches		Replacement Nuts
	For Collet Type	For Bit Shank Size	Projection	Total Indicated Runout (TIR) Accuracy	Collet Nut Type	Coolant Delivery Type	Features	Specs. Met	JIS Specification		Each		Each		Each
2.5 mm/s @ 25,000 rpm







				Hardened Chrome-Moly Steel

				ER-16	0.019" to 0.406"	2.76" (70 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N18	0000000	3215A441	000000	9615N31	000000


				ER-16	0.019" to 0.406"	3.94" (100 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N19	000000	3215A441	00000	9615N31	00000
				ER-20	0.039" to 0.551"	2.76" (70 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N21	000000	1721N15	00000	9615N32	00000
				ER-20	0.039" to 0.551"	3.94" (100 mm)	0.0001"	Coated Hex Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N22	000000	1721N15	00000	9615N32	00000
				ER-25	0.039" to 0.629"	2.76" (70 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N23	000000	5699N128	00000	9615N35	00000
				ER-25	0.039" to 0.629"	3.94" (100 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N24	000000	5699N128	00000	9615N35	00000
				ER-32	0.078" to 0.787"	2.76" (70 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N25	000000	3321A32	00000	9615N36	00000
				ER-32	0.078" to 0.787"	3.94" (100 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N26	000000	3321A32	00000	9615N36	00000
				ER-40	0.118" to 1.024"	3.15" (80 mm)	0.0001"	Coated Slotted Nut	Through Bore	RFID Chip Hole	ISO 7388-2	JIS B 6339	9483N27	000000	32605A95	00000	9615N37	00000


				6.3 mm/s @ 15,000 rpm







								Hardened Nickel Chrome-Moly Steel

								ER-11	0.019" to 0.275"	3"	0.0001"	Hex Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N28	00000	5699N127	00000	9502N17	00000


								ER-16	0.019" to 0.406"	3"	0.0001"	Hex Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N29	00000	3215A441	00000	9502N18	00000
								ER-16	0.019" to 0.406"	6"	0.0001"	Hex Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N31	000000	3215A441	00000	9502N18	00000
								ER-20	0.039" to 0.551"	2.2"	0.0001"	Hex Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N32	00000	1721N15	00000	9502N19	00000
								ER-20	0.039" to 0.551"	4"	0.0001"	Hex Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N33	000000	1721N15	00000	9502N19	00000
								ER-25	0.039" to 0.629"	2.5"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N34	00000	5699N128	00000	9502N21	00000
								ER-25	0.039" to 0.629"	4"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N35	000000	5699N128	00000	9502N21	00000
								ER-32	0.078" to 0.787"	2.5"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N36	00000	3321A32	00000	9502N22	00000
								ER-32	0.078" to 0.787"	4"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N37	000000	3321A32	00000	9502N22	00000
								ER-32	0.078" to 0.787"	6"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N38	000000	3321A32	00000	9502N22	00000
								ER-40	0.118" to 1.024"	4"	0.0001"	Slotted Nut	Flange Entry, Through Bore	Collet Stop Screw	—	JIS B 6339	9483N39	000000	32605A95	00000	9502N23	00000

BT Taper Compensating Tap Collet Holders

Reduce stress on taps to produce clean, accurate threads. These holders work with BT taper CNC machines that don’t support rigid tapping. Also called tension and compression tap holders, they compress as the tap enters material and extend as it backs out, compensating for small spindle and feed rate mismatches. Not only does this protect the tap but also the threads you just cut. They’re often used when tapping through and blind holes with spiral-point and spiral-flute taps.

Their hardened steel shank resists wear. It’s also precision ground to the industry standard AT3 tolerance for a secure fit that minimizes runout in your machine spindle. They meet JIS standards for BT spindles to ensure compatibility. They have a threaded hole that accepts retention knobs, so they connect to your machine’s drawbar system.

Use these holders with tang-drive quick-change tap collets (also known as Bilz-style tap adapters) to swap taps in seconds and limit machine downtime. They are not compatible with ball-drive quick-change tap collets.

For the best performance, select a quick-change collet size that places your tap near the middle of the listed tap size range.

		For Tap		Lg.
	For Quick-Change Tap Collet Size	Size	Pipe Size	Extended	Compressed	Projection	Body Dia.	Total Indicated Runout (TIR) Accuracy	Material	JIS Specification	For Drive Type		Each
BT 30 Taper



		ANSI 1	No. 0 to 9/16" M1.6 to M14	1/8	2.83"	2.13"	2 1/2"	3/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8908N11	0000000


		ANSI 2	5/16" to 7/8" M7 to M22	1/4 to 1/2	4.37"	3.19"	3 3/4"	1 1/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8908N12	000000


		BT 40 Taper



				ANSI 1	No. 0 to 9/16" M1.6 to M14	1/8	3.03"	2.33"	2 5/8"	3/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8908N13	000000


				ANSI 2	5/16" to 7/8" M7 to M22	1/4 to 1/2	4.25"	3.07"	3 5/8"	1 1/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8908N14	000000
				ANSI 3	1/2" to 1 3/8" M12 to M33	3/8 to 1	6.37"	4.49"	5 3/8"	1 7/8"	0.0001"	Hardened Steel	JIS B 6339	Tang	8908N15	000000

BT Taper Rigid Tap Collet Holders

Hold quick-change tap collets on BT taper CNC machines capable of rigid tapping. These holders are rigid, so they move your tap in perfect sync with your machine's spindle speed and feed rate without any flex or compensation.

The hardened steel shank resists wear. It’s also precision ground to the industry standard AT3 tolerance for a secure fit that minimizes runout in your machine spindle. They meet JIS standards for BT spindles to ensure compatibility. They have a threaded hole that accepts retention knobs, so they connect to your machine’s drawbar system.

For the best performance, select a quick-change collet size that places your tap near the middle of the listed tap size range.

		For Tap
	For Quick-Change Tap Collet Size	Size	Pipe Size	Projection	Body Dia.	Total Indicated Runout (TIR) Accuracy	Material	JIS Specification	For Drive Type		Each
BT 30 Taper



		ANSI 1	No. 0 to 9/16" M1.6 to M14	1/8	2 3/8"	1 1/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8910N11	0000000


		ANSI 2	5/16" to 7/8" M7 to M22	1/4 to 1/2	3 1/4"	2"	0.0001"	Hardened Steel	JIS B 6339	Tang	8910N12	000000


		BT 40 Taper



				ANSI 1	No. 0 to 9/16" M1.6 to M14	1/8	2 1/2"	1 1/4"	0.0001"	Hardened Steel	JIS B 6339	Tang	8910N13	000000


				ANSI 2	5/16" to 7/8" M7 to M22	1/4 to 1/2	3 1/2"	2"	0.0001"	Hardened Steel	JIS B 6339	Tang	8910N14	000000
				ANSI 3	1/2" to 1 3/8" M12 to M33	3/8 to 1	4 1/2"	2 7/8"	0.0001"	Hardened Steel	JIS B 6339	Tang	8910N15	000000