M22 Nuts | McMaster-Carr

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94 Products

About Hex Nuts

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

Hex Nuts

The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.

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.

Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Steel—Best for dry environments since moisture will cause these nuts to rust.

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



	M22 × 1.5 mm	32	18	Class 8	DIN 934	1	000000000	00000


	M22 × 2 mm	32	18	Class 8	DIN 934	1	000000000	0000
	M22 × 2.5 mm	32	18	Class 8	DIN 934	10	000000000	00000


	Zinc-Yellow-Chromate-Plated Steel



			M22 × 1.5 mm	32	18	Class 8	DIN 934	1	000000000	0000


			M22 × 2.5 mm	32	18	Class 8	DIN 934	5	000000000	0000


			Black-Oxide Steel



					M22 × 1.5 mm	32	18	Class 8	DIN 934	1	000000000	0000


					M22 × 2.5 mm	32	18	Class 8	DIN 934	1	000000000	0000


					Steel



							M22 × 1.5 mm	32	18	Class 8	DIN 934	1	000000000	0000


							M22 × 2 mm	32	18	Class 8	DIN 934	1	000000000	0000
							M22 × 2.5 mm	32	18	Class 8	DIN 934	10	000000000	0000

High-Strength Steel

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

Steel—Best for dry environments since moisture will cause these nuts to rust.

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



	M22 × 1.5 mm	32	18	Class 10	DIN 934	1	00000000	00000


	M22 × 2.5 mm	32	18	Class 10	DIN 934	1	000000000	0000


	Zinc-Yellow-Chromate-Plated Steel



			M22 × 1.5 mm	32	18	Class 10	DIN 934	1	000000000	0000


			M22 × 2.5 mm	32	18	Class 10	DIN 934	1	000000000	0000


			Black-Oxide Steel



					M22 × 2.5 mm	32	18	Class 10	DIN 934	1	000000000	0000


					Steel



							M22 × 1.5 mm	32	18	Class 10	DIN 934	1	00000000	0000


							M22 × 2.5 mm	32	18	Class 10	DIN 934	5	000000000	00000

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.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M22 × 1.5 mm	32	18	DIN 934	1	000000000	00000


	M22 × 2.5 mm	32	18	DIN 934	1	000000000	0000


	Black-Oxide 18-8 Stainless Steel



			M22 × 2.5 mm	32	18	DIN 934	5	000000000	00000


			Highly Corrosion-Resistant 316 Stainless Steel



					M22 × 2.5 mm	32	18	DIN 934	1	000000000	0000

Brass

Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
Brass



	M22 × 1.5 mm	32	18	DIN 934	1	000000000	000000

Thin-Profile Hex Nuts

About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Medium-Strength Steel

These Grade 5 or Class 04 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.

Steel—Best for dry environments since moisture will cause these nuts to rust.

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



	M22 × 1.5 mm	32	11	Class 04	DIN 439B, ISO 4035	10	000000000	000000


	M22 × 2.5 mm	32	11	Class 04	DIN 439B, ISO 4035	1	000000000	0000


	Zinc-Yellow-Chromate-Plated Steel



			M22 × 1.5 mm	32	11	Class 04	DIN 439B, ISO 4035	5	000000000	0000


			Steel



					M22 × 1.5 mm	32	10	—	DIN 936	10	000000000	00000


					M22 × 1.5 mm	32	11	Class 04	DIN 439B, ISO 4035	10	000000000	0000
					M22 × 2.5 mm	32	10	—	DIN 936	5	000000000	0000
					M22 × 2.5 mm	32	11	—	DIN 439B, ISO 4035	1	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.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M22 × 1.5 mm	32	10	DIN 936	1	000000000	00000


	M22 × 1.5 mm	32	11	DIN 439B, ISO 4035	1	000000000	00000
	M22 × 2.5 mm	32	11	DIN 439B, ISO 4035	1	000000000	00000


	Highly Corrosion-Resistant 316 Stainless Steel



			M22 × 2.5 mm	32	10	DIN 936	1	000000000	00000

Nylon-Insert Locknuts

Versatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.

High-Strength Steel

Image of Product. Front orientation. Locknuts. Nylon-Insert Locknuts.

Rated Grade 8, Grade C, or Class 10, these locknuts are about 25% stronger than medium-strength steel nuts. 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.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Insert Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M22 × 1.5 mm	32	22	Class 10	220	DIN 985, ISO 10511	1	000000000	000000


	M22 × 2.5 mm	32	22	Class 10	220	DIN 985	1	000000000	0000

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.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Insert Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	M22 × 2.5 mm	32	22	Class 8	220	DIN 985, ISO 10511	5	000000000	00000


	Zinc-Plated Steel



			M22 × 1.5 mm	32	22	Class 8	220	DIN 985, ISO 10511	5	000000000	00000


			M22 × 2.5 mm	32	22	Class 8	220	DIN 985, ISO 10511	5	000000000	00000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.

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

	Wd., mm	Ht., mm	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M22 × 2.5 mm	32	22	220	10	000000000	000000

Corrosion-Resistant Stainless Steel

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

316 Stainless Steel—Our most corrosion-resistant nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

	Wd., mm	Ht., mm	Insert Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M22 × 2.5 mm	32	22	220	DIN 985	1	000000000	00000


	316 Stainless Steel



			M22 × 2.5 mm	32	22	220	DIN 985	1	000000000	0000

Bearing Locknuts

Carbon Steel

With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.

Zinc-Plated Carbon Steel—Zinc-plated carbon steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals. They are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

Carbon Steel—All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.

303 Stainless Steel—303 stainless steel locknuts resist corrosion better than carbon steel locknuts but aren’t as strong. They withstand washdowns and chemicals.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Thread						Carbon Steel		Zinc-Plated Carbon Steel		303 Stainless Steel
	Size	Spacing	OD, mm	Wd., mm	Insert Max. Temp., ° F	Specs. Met		Each		Each		Each
Chamfered Face



		M22 × 1 mm	Extra Fine	34	10.5	160	ISO 2982-2	0000000	000000	———	0	0000000	000000


		M22 × 1 mm	Extra Fine	38	10	210	—	———	0	0000000	000000	———	0
		M22 × 1.5 mm	Fine	38	12.5	210	—	———	0	0000000	00000	———	0

Heavy-Profile Hex Nuts

About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.

High-Strength Steel

Hot-Dipped Galvanized Steel—Combines the strength of steel with the rust resistance of stainless steel. These nuts are an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals. The galvanized finish is thicker than other types of coatings, so the threads may be more likely to stick during installation. Use with other hot-dipped galvanized fasteners.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Hot-Dipped Galvanized Steel



	M22 × 2.5 mm	36	18	Class 10	DIN 6915, ISO 7414	1	000000000	00000

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M22 × 2.5 mm	36	23	ASTM Grade 2H	ASTM A194, DIN 6915	1	000000000	00000

Thin-Profile Bearing Nuts

Used in pairs or with another bearing nut, these thin-profile nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle. Threading two nuts tightly against each other makes it harder for vibration to loosen your assembly than if you used only one nut. For the nut closer to the bearing, position the stepped face towards the bearing. These thin-profile nuts have holes on the side, so you can tighten and loosen them with a pin spanner wrench. All meet DIN 1816, an international standard for bearing locknut dimensions.

Carbon Steel—Carbon steel bearing nuts are strong and resist wear.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met		Each
Carbon Steel







				Stepped Face

				M22 × 1.5 mm	Fine	40	9	DIN 1816	0000000	000000

Left-Hand-Thread Thin-Profile Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Medium-Strength Steel

These Grade 5 or Class 04 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.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Steel



	M22 × 1.5 mm	32	11	Class 04	ASTM A108, DIN 439B, ISO 4035	1	000000000	000000


	M22 × 2.5 mm	32	11	Class 04	ASTM A108, DIN 439B, ISO 4035	1	000000000	00000

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.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M22 × 1.5 mm	32	11	DIN 439B	1	000000000	000000


	M22 × 2.5 mm	32	11	DIN 439B	1	000000000	00000


	Highly Corrosion-Resistant 316 Stainless Steel



			M22 × 1.5 mm	32	11	DIN 439B, ISO 4035	1	000000000	00000

JIS Hex Nuts

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

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



	M22 × 2.5 mm	30	13	JIS B 1181	1	000000000	000000

Cap Nuts

Conceal and protect protruding screw threads while fastening parts together. These nuts help prevent damage to surrounding materials and reduce injuries. Also known as acorn nuts, they have a smooth, rounded head that creates a finished look.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

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.

Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant cap nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

								Pkg.
	Thread Size	Thread Dp., mm	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
18-8 Stainless Steel



		M22 × 2.5 mm	28.6	34	39	DIN 1587	1	000000000	00000	00000	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				M22 × 2.5 mm	29	34	39	DIN 1587	1	000000000	00000	00000	00000

Coupling Nuts

Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Low-Strength Steel

Rated Grade 2 or lower, these are about half as strong as medium-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

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

Black-Oxide Steel—A dark, matte coating creates a finished look. Nuts offer minimal corrosion resistance, so they're best for dry environments.

							Each
	Thread Size	Lg., mm	Wd., mm	Threading	Specs. Met		1-9	10-49	50-Up
Zinc-Plated Steel



		M22 × 2.5 mm	66	32	Fully Threaded	DIN 6334	000000000	000000	000000	000000


		Black-Oxide Steel



				M22 × 2.5 mm	66	32	Fully Threaded	DIN 6334	000000000	00000	00000	00000

Medium-Strength Steel

These Grade 5 or Class 8 nuts are about twice as strong as low-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

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

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

								Each
	Thread Size	Lg., mm	Wd., mm	Fastener Strength Grade/Class	Threading	Specs. Met		1-9	10-49	50-Up
Zinc-Plated Steel



		M22 × 2.5 mm	66	32	Class 8	Fully Threaded	ASME B18.2.2, DIN 6334	000000000	000000	000000	000000

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.

								Each
	Thread Size	Lg., mm	Wd., mm	Threading	Min. Thread Lg., mm	Specs. Met		1-9	10-49	50-Up
18-8 Stainless Steel



		M22 × 2.5 mm	66	32	Fully Threaded	—	ASME B18.2.2, DIN 6334	000000000	000000	000000	000000


		M22 × 2.5 mm	132	30	Partially Threaded	22	—	000000000	000000	000000	000000

Steel-Insert Locknuts for Extreme Vibration

The most secure hold of all the locknuts we offer. The tab on the insert stops the nut from rotating, even under extreme vibration. These locknuts are ideal for equipment with constant motion or jarring starts and stops, including conveyors, shakers, and compactors. In fact, they're so secure that they're even used to fasten components on roller coasters. These locknuts are also reusable, but their holding power decreases after the first use, so you should use a new nut for the strongest possible hold.

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.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class		Each
Steel



	M22 × 2.5 mm	32	20	Class 8	000000000	000000

High-Profile Nylon-Insert Locknuts

Slightly taller than standard-profile locknuts, these have a larger gripping area so your wrench or socket won't slip off as you tighten them. They're often used in vehicles and machinery where fasteners can be difficult to reach. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.

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.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Insert Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M22 × 2.5 mm	32	25	Class 8	220	DIN 982, ISO 7040	1	000000000	00000

Top-Lock Distorted-Thread Locknuts

Irregularly shaped threads at the top of these locknuts grip the screw for a stronger hold than nylon-insert locknuts. Although the threads prevent the nut from backing out due to vibration, they also increase the effort to install and remove. To get these nuts off, you may need special tools, such as an impact wrench or propane torch. Nuts are not reusable.

High-Strength Steel

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.

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



	M22 × 1.5 mm	32	22	Class 10	5	000000000	000000


	M22 × 2.5 mm	32	22	Class 10	5	000000000	00000


	Black-Phosphate-Coated Steel



			M22 × 1.5 mm	33	22	Class 10	1	000000000	0000


			M22 × 2.5 mm	33	22	Class 10	1	000000000	0000

Center-Lock Distorted-Thread Locknuts

Also known as reversible locknuts, these thread on from either side, so you don't have to worry about fastening them incorrectly and damaging your screw. The irregularly shaped threads in the middle grip the screw for a stronger hold than nylon-insert locknuts. Although the threads prevent the nut from backing out due to vibration, they also increase the effort to install and remove. To get these nuts off, you may need special tools, such as an impact wrench or propane torch. Nuts are not reusable.

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.

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



	M22 × 1.5 mm	32	18	Class 8	1	000000000	000000

T-Slot Nuts

Slide into T-slot tracks on machine tool tables to secure clamps and workpieces. These nuts are often paired with setup studs for adjustable fixtures.

Metric

Black-Oxide Steel—Create a finished look with a dark, matte coating. These nuts offer minimal corrosion resistance, so they're best for dry environments.

Fully Threaded—Fully threaded nuts allow a stud to extend beyond the bottom of the nut.

			Base, mm				Fully Threaded
	For Slot Wd., mm	Thread Size	Lg.	Wd.	Ht.	Overall Ht., mm		Each
Black-Oxide Steel



		24	M22 × 2.5 mm	40	40	16	32	000000000	000000

Flex-Top Locknuts for Heavy Vibration

The top section of these nuts expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. They’re often used in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.

Corrosion-Resistant Stainless Steel

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

	Wd., mm	Ht., mm		Each
18-8 Stainless Steel



	M22 × 2.5 mm	32	28.6	000000000	000000

Key-Locking Threaded Inserts for Soft Metal

Add strong threads in soft metal, such as aluminum. The keys on these inserts drive into holes to hold more securely than thread-locking or helical inserts. They prevent slipping and rotating, so they’re stable enough for use in vehicle or aerospace parts that experience heavy vibration. These inserts are comparable to Keensert inserts.

To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts									Installation Tools		Inserts with Installation Tools
								Each
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys		1-9	10-Up		Each	No. of Inserts Included		Each
Standard Wall







				Black Phosphate-Coated Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	000000000	000000	000000	000000000	000000	3	000000000	000000


				M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	000000000	00000	00000	000000000	00000	3	000000000	00000
				M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	000000000	00000	00000	000000000	00000	3	000000000	000000




						18-8 Stainless Steel

						M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	000000000	00000	00000	000000000	00000	3	000000000	000000


						M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	000000000	00000	00000	000000000	00000	3	000000000	000000
						M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	000000000	00000	00000	000000000	00000	—	———	0

Threaded on Both Ends Setup Studs

Known as setup studs, these studs withstand sideways forces better than fully threaded studs because they have a strong unthreaded middle. The unthreaded middle also makes more contact with unthreaded holes, creating better alignment than a fully threaded stud.

Black-Oxide Steel

Black-oxide steel studs resist rusting in dry environments.

DIN 6379—Studs that meet DIN standards meet dimensional and material requirements.

	Thread, mm
	Lg. (A)	Lg. (B)	Lg., mm	Tensile Strength, psi	Specs. Met		Each
M22 × 2.5 mm



		45	31	100	100,000	DIN 6379	000000000	000000


		122	31	200	100,000	DIN 6379	000000000	00000
		180	31	315	100,000	DIN 6379	000000000	00000

Screw-Locking Seize-Resistant Key-Locking Threaded Inserts for Soft Metal

Create the tightest hold in aluminum and other soft metal without screws sticking. The lubricant on these inserts eases installation, and the irregularly shaped threads won’t let screws back out from vibration. Inserts have keys that drive into material to prevent them from slipping or rotating in the hole.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Dry-Film-Lubricated Cadmium-Plated Steel—The plating creates a barrier against rust.

Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Inserts									Installation Tools
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	Specs. Met		Each		Each
Standard Wall







				Dry-Film-Lubricated Cadmium-Plated Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	NA0150E160	000000000	000000	000000000	000000


				M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	000000000	00000	000000000	00000




						Dry-Film-Lubricated 18-8 Stainless Steel

						M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	000000000	00000	000000000	00000

Mil.-Spec. Key-Locking Threaded Inserts For Soft Metal

These inserts are manufactured and tested to meet or compare to strict standards adopted by the U.S. military. The keys drive into aluminum and other soft metal for a secure hold that won't slip or rotate, even in vibrating vehicle or aerospace parts. These inserts are comparable to Keensert inserts.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

High-Strength Cadmium-Plated Alloy Steel—These inserts have the strength to stand up to high-pressure applications and a plating that helps screws thread in smoothly.

	Inserts									Installation Tools
	Thread Size	For Tap Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	Specs. Met		Each		Each
Standard Wall







				High-Strength Cadmium-Plated Alloy Steel

				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	NA0150-160	000000000	000000	000000000	000000

Finish-Your-Own Key-Locking Threaded Inserts for Soft Metal

Tap the thread size you need into the solid body of these inserts. They’re a great choice when you need a custom combination of internal thread size and external diameter. Use them to repair or add new threads in soft metal, such as aluminum. They can also plug threaded holes without the hassle of welding. Keys on the inserts drive into material to prevent slipping and rotating in the hole.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Inserts								Installation Tools
	For Tap Thread Size	Installed Lg., mm	Max. Tapping Dia., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys		Each		Each
Standard Profile







				Black Phosphate-Coated Steel

				M22 x 1.5 mm	22	16	20.5	20.5	4	000000000	000000	000000000	0000000




						18-8 Stainless Steel

						M22 x 1.5 mm	22	16	20.5	20.5	4	000000000	00000	000000000	000000

Key-Locking Threaded Inserts with Installation Tools

Paired with the right tool for installation, these inserts create strong threads in soft metal, such as aluminum. They have keys that drive into material to prevent inserts from slipping and rotating in the hole.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Drill Bit Size, mm	For Max. Hole Dia., mm	No. of Locking Keys	No. of Inserts Included		Each
Standard Wall







	Black Phosphate-Coated Steel

	M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	000000000	000000


	M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	000000000	00000
	M22 x 1.5 mm	M32 x 2 mm	32	30	30	4	3	000000000	000000




			18-8 Stainless Steel

			M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	000000000	000000


			M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	3	000000000	000000