M16 Thread Threaded Inserts

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For Tap Thread Pitch

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Drill Bit Size

Thread Direction

Right Hand and Left Hand

Number of Locking Keys

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20,000 psi to 39,999 psi

40,000 psi to 99,999 psi

120,000 psi or greater

Helical Insert Type

Thread Fit

Unified Standard Class 2B

DFARS Specialty Metals

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112 Products

About Threaded Inserts

Choose the right threaded insert for your application and learn how to install it securely.

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.

Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.

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.	Drill Bit Size	For Max. Hole Dia.	No. of Locking Keys		1-9	10-Up		Each	No. of Inserts Included		Each
Standard Wall







				Black Phosphate-Coated Steel

				M10 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	90245A348	000000	000000	94010A495	000000	—	———	0


				M10 x 1.5 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	90245A285	00000	00000	94010A495	00000	—	———	0
				M16 x 1.5 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	90245A193	00000	00000	94010A345	00000	3	90245A316	000000
				M16 x 2 mm	1"-12	0.870"	15/16"	0.938"	4	90699A335	00000	00000	90699A570	00000	3	90699A135	00000
				M16 x 2 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	90245A189	00000	00000	94010A345	00000	3	90245A311	00000




						18-8 Stainless Steel

						M10 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	93340A102	00000	00000	94010A495	00000	—	———	0


						M10 x 1.5 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	93715A395	00000	00000	94010A495	00000	—	———	0
						M16 x 1.5 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	93715A660	00000	00000	94010A345	00000	3	93715A470	000000
						M16 x 2 mm	1"-12	0.870"	15/16"	0.938"	4	93930A215	00000	00000	90699A570	00000	—	———	0
						M16 x 2 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	93715A655	00000	00000	94010A345	00000	3	93715A465	000000


						Thin Wall







										Black Phosphate-Coated Steel

										M12 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	90245A178	0000	0000	94010A320	00000	3	90245A169	00000


										M12 x 1.75 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	90245A177	0000	0000	94010A320	00000	3	90245A168	00000




												18-8 Stainless Steel

												M12 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	93715A640	00000	00000	94010A320	00000	3	93715A445	00000


												M12 x 1.75 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	93715A635	00000	00000	94010A320	00000	3	93715A450	00000

Thread-Locking Threaded Inserts

With Loctite® adhesive already on the threads, these inserts won’t back out or vibrate loose. The adhesive reaches full strength after 72 hours. Unlike helical inserts, you can install them with a standard drill and tap. However, thread-locking inserts are difficult to remove and reuse.

After drilling and tapping your hole, install inserts with a wrench or an installation bit. To use a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into the hole. For slotted inserts, you can drive with a slotted screwdriver instead.

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.

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

	Inserts									Installation Tools
	Thread Size	For Tap Thread Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	Drive Style	Pkg. Qty.		Pkg.		Each
Standard Wall







				Black Phosphate-Coated Steel

				3/8"-16	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	5	97224A230	000000	94110A160	000000


				1/2"-13	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	5	97224A250	00000	94110A180	00000
				M10 x 1.5 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	5	97084A250	00000	94110A160	00000
				M12 x 1.75 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	5	97084A260	00000	94110A170	00000
				M16 x 2 mm	1"-8	0.781"	7/8"	0.875"	Slotted	5	97084A160	00000	94110A190	00000
				M16 x 2 mm	M24 x 3 mm	20 mm	21 mm	21 mm	Slotted	1	97084A270	0000	94110A190	00000




						18-8 Stainless Steel

						M10 x 1.5 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	1	97120A250	0000	94110A160	00000


						M12 x 1.75 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	1	97120A260	0000	94110A170	00000
						M16 x 2 mm	1"-8	0.781"	7/8"	0.875"	Slotted	1	97120A160	0000	94110A190	00000
						M16 x 2 mm	M24 x 3 mm	20 mm	21 mm	21 mm	Slotted	1	97120A270	0000	94110A190	00000




								Highly Corrosion-Resistant 316 Stainless Steel

								M10 x 1.5 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	1	96026A106	0000	94110A160	00000


								M12 x 1.75 mm	M16 x 2 mm	17 mm	14 mm	14 mm	Slotted	1	96026A107	00000	94110A170	00000

Key-Locking Threaded Insert Assortments with Installation Tools

What you need to add or repair a range of thread sizes in soft metal, such as aluminum. These assortments include multiple key-locking inserts of each size and an installation tool. They're comparable to Keensert inserts.

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.

				For Tap
	No. of Inserts Included	Includes	Thread Spacing	Thread Size	Thread Pitch, mm	Drill Bit Size, mm	For Max. Hole Dia., mm		Each
Thin Wall







				Black Phosphate-Coated Steel

				82	Installation Tool M6×1 mm Thread × 10 mm Installed Lg. (20 Each) M8×1 mm Thread × 12 mm Installed Lg. (15 Each) M8×1.25 mm Thread × 12 mm Installed Lg. (15 Each) M10×1.25 mm Thread × 14 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 14 mm Installed Lg. (10 Each) M12×1.25 mm Thread × 16 mm Installed Lg. (6 Each) M12×1.75 mm Thread × 16 mm Installed Lg. (6 Each)	Coarse, Fine, Extra Fine	M10 M12 M14 M16	1.25 1.5	8.8 10.8 12.8 14.75	8.8 10.8 12.8 14.75	90284A311	0000000




						18-8 Stainless Steel

						82	Installation Tool M6×1 mm Thread × 10 mm Installed Lg. (20 Each) M8×1 mm Thread × 12 mm Installed Lg. (15 Each) M8×1.25 mm Thread × 12 mm Installed Lg. (15 Each) M10×1.25 mm Thread × 14 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 14 mm Installed Lg. (10 Each) M12×1.25 mm Thread × 16 mm Installed Lg. (6 Each) M12×1.75 mm Thread × 16 mm Installed Lg. (6 Each)	Coarse, Fine, Extra Fine	M10 M12 M14 M16	1.25 1.5	8.8 10.8 12.8 14.75	8.8 10.8 12.8 14.75	90284A511	000000

Helical Threaded Inserts

Pronged

Restore, reinforce, or create threads in metal. The tough coils on these inserts expand once installed to anchor in a tapped hole. Also known as Heli-Coil inserts, they're often used in engine heads and machinery housings where strong connections are critical. Unlike threadlocking inserts, you can remove and reuse them without them losing their strength.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

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

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools		Inserts with Installation Tools
	Thread Size	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each	No. of Inserts Included		Each
Pronged







				18-8 Stainless Steel

				M16 x 1.5 mm	24	21/32"	0.656"	SAE MA3279-167	6	92450A619	000000	92450A621	0000000	92450A622	0000000	92450A611	0000000	—	———	0


				M16 x 2 mm	16	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-118	1	91732A673	0000	91709A371	00000	91709A566	000000	90261A208	000000	—	———	0
				M16 x 2 mm	24	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-168	1	91732A675	0000	91709A371	00000	91709A566	000000	90261A208	000000	6	91732A071	0000000
				M16 x 2 mm	32	16.5 mm	16.5 mm	DIN 8140, SAE MA3279-218	1	91732A676	0000	91709A371	00000	91709A566	000000	90261A208	000000	—	———	0

Extraction Tools

Remove installed helical inserts.

For Pronged Helical Inserts—Place the tip into pronged inserts and lightly strike the tool’s head. Then, turn the tool counterclockwise with pressure to extract the insert.

		Each
For Pronged Helical Inserts



	7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24	90254A330	000000

Key-Locking Threaded Insert Drivers

Place the tip of these tools into a key-locking insert after you've threaded it into a hole with your fingers. Then, strike these tools with a hammer to drive the keys into the material and secure the insert. They’re compatible with Keensert inserts.

Choose the tool that matches your insert’s thread size and tap thread size.

		Each
Metric Thread







	For Thin-Wall Inserts

	M12	M16	Straight	94010A320	000000




			For Thick-Wall Inserts

			M10	M16	Straight	94010A495	00000


			M16	1"-12	Straight	90699A570	00000
			M16	M22	Straight	94010A345	00000

Helical Threaded Insert Removal Tools

To remove installed helical inserts, place the tip of these tools into the insert and lightly strike the tool’s head. Then, turn the tool counterclockwise with pressure to extract the insert.

Narrow Profile—The tip of these tools has a narrower angle than standard removal tools to reduce the chance it will dig into your material’s surface when you strike the tool.

	Mfr.		Each
Standard Profile



	6-32, 6-40, 8-32, 8-36, 10-24, 10-32, 12-24, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 7/8"-9, 7/8"-14, 1"-8, 1"-12, 1"-14, M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M15, M16, M18, M20, M22, M24	—	90254A113	000000


	Narrow Profile



			7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24	Heli-Coil	90254A330	00000

Installation Bits for Slotted-Drive Threaded Inserts

For fast installation, use these installation bits with power drills and drill presses.

For Thread Size	Hex Shank Size		Each
5/8"-11, 5/8"-18, M16	3/8"	94110A190	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	For Max. Hole Dia.	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 mm	20.5 mm	20.5 mm	4	3	90245A316	000000


	M16 x 2 mm	1"-12	0.870"	15/16"	0.938"	4	3	90699A135	00000
	M16 x 2 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	3	90245A311	00000




			18-8 Stainless Steel

			M16 x 1.5 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	3	93715A470	000000


			M16 x 2 mm	M22 x 1.5 mm	22 mm	20.5 mm	20.5 mm	4	3	93715A465	000000


			Thin Wall







							Black Phosphate-Coated Steel

							M12 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	3	90245A169	00000


							M12 x 1.75 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	3	90245A168	00000




									18-8 Stainless Steel

									M12 x 1.25 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	3	93715A445	00000


									M12 x 1.75 mm	M16 x 1.5 mm	16 mm	14.75 mm	14.75 mm	4	3	93715A450	00000

Press-Fit Nuts for Sheet Metal

Add permanent threads to thin panels in seconds. The knurls on these clinch-style nuts deform and grip sheet metal to create a permanent hold. Push them into a drilled or punched hole with an arbor press around your workpiece to install—no messy welding required.

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

				Head, mm
Thread Size	Drill Bit Size, mm	For Min. Panel Thk., mm	For Maximum Panel Hardness	Wd.	Ht.	Head Shape	Pkg. Qty.		Pkg.







			Zinc-Plated Steel

			M16 x 2 mm	18.5	3	Not Rated	22	11.6	Hex	1	99437A543	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	97255A333	000000	93904A794	000000


				M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	97255A332	00000	93904A794	00000




						Dry-Film-Lubricated 18-8 Stainless Steel

						M10 x 1.25 mm	M16 x 1.5 mm	16	14.75	14.75	4	—	97255A179	00000	93904A791	00000


						M10 x 1.5 mm	M16 x 1.5 mm	16	14.75	14.75	4	—	97255A196	00000	93904A791	00000
						M16 x 2 mm	M22 x 1.5 mm	22	20.5	20.5	4	—	97255A213	00000	93904A794	00000


						Thin Wall







										Dry-Film-Lubricated 18-8 Stainless Steel

										M12 x 1.75 mm	M16 x 1.5 mm	16	14.75	14.75	4	—	97255A188	00000	93904A784	00000

Thread-Locking Threaded Insert Assortments

These assortments include various sizes of thread-locking inserts, which won’t back out or loosen from vibration. Also known as E-Z Lok, they come with Loctite® adhesive already applied, and the adhesive reaches full strength after 72 hours. After drilling and tapping your hole, install inserts with a wrench or use an installation bit (not included). To use a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into 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.

				For Tap
	No. of Inserts Included	Includes	Thread Spacing	Thread Size	Thread Pitch	Drill Bit Size	For Maximum Hole Diameter	Drive Style		Each
Standard Wall







				Black Phosphate-Coated Steel

				33	M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 17 mm Installed Lg. (10 Each) M12×1.75 mm Thread × 17 mm Installed Lg. (8 Each) M16×2 mm Thread × 20 mm Installed Lg. (5 Each)	Coarse	M12 M16 M16 M24	1.75 mm 2 mm 2 mm 3 mm	10.4 mm 14 mm 14 mm 21 mm	10.4 mm 14 mm 14 mm 21 mm	Slotted	97084A290	0000000




						18-8 Stainless Steel

						33	M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 17 mm Installed Lg. (10 Each) M12×1.75 mm Thread × 17 mm Installed Lg. (8 Each) M16×2 mm Thread × 20 mm Installed Lg. (5 Each)	Coarse	M12 M16 M16 M24	1.75 mm 2 mm 2 mm 3 mm	10.4 mm 14 mm 14 mm 21 mm	10.4 mm 14 mm 14 mm 21 mm	Slotted	97120A035	000000

Helical Threaded Inserts with Installation Tools

Drill Bit, Installation Tool

and Through-Hole Tap

Quickly restore stripped threads—these inserts come with through-hole taps and installation tools. The tough coils on these inserts expand once installed to anchor in a tapped hole.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

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

	For Max. Hole Dia.	No. of Inserts Included	Includes		Each
Pronged







	18-8 Stainless Steel

	M16 x 2 mm	24	21/32"	0.656"	6	Drill Bit Installation Tool Through-Hole Tap	91732A071	0000000

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

				M10 x 1.25 mm	M16 x 1.5 mm	16	14.75	14.75	4	NA0150-100	95101A163	000000	93904A791	000000


				M16 x 1.5 mm	M22 x 1.5 mm	22	20.5	20.5	4	NA0150-160	95101A165	00000	93904A794	00000


				Thin Wall







								High-Strength Cadmium-Plated Alloy Steel

								M12 x 1.25 mm	M16 x 1.5 mm	16	14.75	14.75	4	NA0148-120	95101A155	00000	93904A784	00000

Easy-Start Helical Threaded Insert Installation Tools

These tools compress the diameter of your insert so it fits easily into a tapped hole. They’re the best choice for preventing misaligned or damaged threads—just make sure you have space to turn the crank. Screw or slide an insert onto your tool and drive it between a quarter-turn and half-turn below the surface. Also known as prewinders.

Threaded Insert Installation Tools with Depth Stop

T-Handle


Prong Slot Drive	Threaded Drive

Ensure consistent installation across multiple inserts. Set your desired installation depth, and the stop will prevent you from driving your insert any further.

Prong Slot Drive Helical Insert Tool—Install both left- and right-hand threaded inserts with any thread pitch. However, these tools don't align the threads like threaded-drive tools, so installation may be more difficult.

Threaded Drive Helical Insert Tool—These tools align each coil of your insert perfectly with the thread pitch of your tapped hole for easy installation.

	Mfr.	Handle Style	Helical Insert Tool Drive Type	For Use With		Each
Metric Thread



	M16 × 1.5 mm	—	T-Handle	Prong Slot	Helical Inserts, Screw-Locking Helical Inserts	92450A611	0000000


	M16 × 2 mm	—	T-Handle	Prong Slot	Helical Inserts, Screw-Locking Helical Inserts	1338N71	000000
	M16 × 2 mm	Heli-Coil	T-Handle	Threaded	Helical Inserts, Screw-Locking Helical Inserts	90261A208	000000

Key-Locking Threaded Insert Installation Tools


Style A	Style D

Thread inserts and drive down their keys with a single tool. These tools are compatible with Keensert inserts.

Threaded Insert Installation Tools

Style A

	For Tap Thread Size	Style	Features		Each
For Thin-Wall Inserts



	M12	M16	A	Slotted End	6721N77	000000


	For Thick-Wall Inserts



			M10	M16	A	Slotted End	6721N86	00000


			M16	M22	A	Slotted End	6721N89	00000

Threaded Insert Installation Tools with Spring

Style D

The tradespersons’ choice for installing Mil. Spec. inserts. A spring holds the sleeve under tension, so wobbles and jostles don’t interfere with a clean, professional install.

	For Tap Thread Size	Style	Features		Each
For Thin-Wall Inserts



	M12	M16	D	Sleeve, Slotted End	93904A784	000000


	For Thick-Wall Inserts



			M10	M16	D	Sleeve, Slotted End	93904A791	00000


			M16	M22	D	Sleeve, Slotted End	93904A794	00000

Tapping Threaded Inserts for Soft Metal

No need to tap the hole, these inserts cut their own threads into soft metal, such as aluminum. The teeth dig into the material to keep them secure when installing and removing screws. To install inserts with a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into a drilled hole. If you need to add a lot of threaded connections quickly, use an installation tool with a ratchet wrench or drill press. These inserts are comparable to Tap-Lok inserts.

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

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

	Inserts						Installation Tools
	Thread Size	Installed Lg., mm	Drill Bit Size	For Max. Hole Dia.		Each		Each
Standard Wall







				Zinc-Plated Steel

				M16 x 2 mm	28.5	55/64"	0.859"	90240A603	000000	90240A409	0000000

Screw-Locking Helical Threaded Inserts

Pronged

The irregularly shaped threads tightly grip screws to prevent them from loosening or backing out under vibration. Use these inserts to create or repair threads in pumps and other machinery that shakes and rattles. Also known as Heli-Coil inserts.

Installation requires a drill bit, a helical insert tap, and an installation tool.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

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

	Inserts								Through-Hole Taps		Closed-End Hole Taps		Installation Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each
Pronged







				18-8 Stainless Steel

				M16 x 2 mm	16	16.5	16.5	DIN 8140, SAE MA3329-118	1	90296A415	000000	91709A371	000000	91709A566	0000000	90261A208	0000000


				M16 x 2 mm	24	16.5	16.5	DIN 8140, SAE MA3329-168	1	90296A417	0000	91709A371	00000	91709A566	000000	90261A208	000000

Steel Socket Nuts

Also known as Allen nuts, use these with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench. Tighten them with a 6-point hex key. They can also be used as an insert by pressing or drawing them into nonhardened steel, cast iron, or soft nonferrous metal or by molding them into plastic, ceramic, fiber, and similar materials. Made from alloy steel, they're comparable in strength to Grade 9 bolts.

	OD, mm	Ht., mm	Threading	Thread Dp., mm	For Hole Dia., mm	Hex Key Size		Each
Alloy Steel



	M16 × 2 mm	25	26	Partially Threaded	12.7	26	9/16"	92066A122	000000

Installation Tools for Tapping Threaded Inserts

Install tapping inserts into metal, plastic, and wood with these tools. They have hardened steel threads that grip the full length of the insert for strong, rigid support as the insert cuts threads. The result is a straight and stable install.

Square Shank—These tools don’t have a handle. Attach them to a tap wrench to turn.

Loosening Nut—After installation, this nut lets you unthread the tool without unthreading the insert.

	Square Drive Size	Shank Type	Features		Each
Metric Thread



	M16 × 2 mm	43/64"	Square	Loosening Nut	90240A409	0000000

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

				M16 x 1.5 mm	16	12	14.75	14.75	4	93774A280	000000	93741A280	0000000




						18-8 Stainless Steel

						M16 x 1.5 mm	16	12	14.75	14.75	4	93543A220	00000	93741A280	000000

High-Capacity Press-Fit Leveling Mount Inserts

Rated for high load capacity, use these inserts to connect threaded leveling mounts to machinery, instrument bases, and conveyor equipment with tubular legs. These inserts have pass-through holes that are partially threaded at the base. Tap mounts into place with a rubber hammer.

For Square Legs


Shown with Brass Insert Installed

Plastic with Brass Insert—Move equipment around your workspace and make frequent adjustments without worrying about stripping the brass threads.

	For Leg						Thread
	Outer Lg.	Outer Wd.	Inner Lg.	Inner Wd.	Cap. per Mount, lb.	Overall Ht.	, mm	Size	Type	Dp.	Temp., ° F		Each
Plastic with Brass Insert



		1 1/2"	1 1/2"	1 5/16"	1 5/16"	1,500	1 11/16"	2	M16	Metric	1"	-20 to 180	60945K77	00000


		2"	2"	1 3/4"	1 3/4"	2,000	2"	2	M16	Metric	1"	-20 to 180	60945K82	0000

For Round Legs


Shown with Brass Insert Installed

Plastic with Brass Insert—Move equipment around your workspace and make frequent adjustments without worrying about stripping the brass threads.

	For Leg				Thread
	ID	OD	Cap. per Mount, lb.	Overall Ht.	, mm	Size	Type	Dp.	Temp., ° F		Each
Plastic with Brass Insert



		1 5/16"	1 1/2"	1,500	1 11/16"	2	M16	Metric	1"	-20 to 180	60945K93	00000


		1 13/16"	2"	2,000	1 15/16"	2	M16	Metric	1"	-20 to 180	60945K97	0000

Square Weld Nuts

With four symmetrical projections, these nuts create the strongest hold in our offering. Unlike rectangular weld nuts, each projection is equidistant from the threads, so welds wrap evenly for extra strength and twist resistance. Projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All nuts have a collar pilot that guides them into the hole, holds them in place while welding, and protects the threads from weld spatter.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

	Wd., mm	Ht., mm	For Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M16 × 2 mm	24	13	18.8	DIN 928	5	93975A122	000000

Weld Nuts

Add permanent threads to thin metal with our go-to weld nuts. Unlike press-fit and rivet nuts, these nuts fuse to the base metal, so they won’t twist and pull out. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter. You can also install them on thick pieces of metal.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

18-8 Stainless Steel—Suitable for outdoor use, these nuts resist rust from water and mild chemicals. Weld them to stainless steel surfaces.

				Collar, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Ht.	For Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel



		M16 × 2 mm	24	11.2	18.8	1.8	18.8	DIN 929	10	93337A900	000000


		18-8 Stainless Steel



				M16 × 2 mm	24	11.2	18.8	1.8	18.8	DIN 929	1	93418A900	00000

Key-Locking Threaded Insert Blank Drivers

Hand thread an insert blank into a tapped hole before placing the tip of these tools on the insert. Strike the tool with a hammer to drive the keys into your material.

	Handle Style		Each
Metric Thread



	M16	Straight	93741A280	0000000

Weld Locknuts

Prevent screws from backing out under heavy vibration. These nuts have distorted threads that grip screws tightly. Three evenly spaced projections concentrate heat away from the threads to prevent them from deforming and create consistent welds. These nuts also have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.

Use Grade 2 or Class 6 screws to avoid stripping threads during installation. Distorted threads require high torque for fastening and unfastening, so you may need an impact wrench to remove screws.

Steel—Best for dry environments since moisture will cause them to rust. Made of uncoated steel, these nuts require minimal prep. Weld them to uncoated steel surfaces.

				Collar, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Ht.	For Hole Dia., mm	Pkg. Qty.		Pkg.
Steel



		M16 × 2 mm	26	13	20.6	1.3	20.6	5	90744A130	00000

Air-Powered Key-Locking Threaded Insert Installation Tools

Install key-locking inserts in a flash. Instead of threading and hammering inserts in by hand, these air-powered tools do both steps with the pull of a trigger. Release the trigger and the tool automatically resets, ready for the next insert. They’re compatible with Keensert inserts.

				Air Inlet
Threaded Insert Tool Cycle Time, sec.	Max. Speed @ 90 psi, rpm	Wt., lb.	Average Air Consumption @ Pressure	Pipe Size	Thread Type	Gender	Includes	Container Type		Each
10	2,000	4.4	1.4 ft³/min @ 90 psi	1/4	NPTF	Female	One Nosepiece for 1/4-20 Thread Size One Nosepiece for 3/8-16 Thread Size One Nosepiece for 5/16-18 Thread Size One Nosepiece for 10-24 Thread Size	Plastic Case	91456A121	000000000

Threaded Insert Installation Tool Nosepieces

Choose a nosepiece that matches the internal thread size of your insert.

	For Tap Thread Size		Each
For Thin-Wall Inserts, Thick-Wall Inserts, and Extra-Thick-Wall Inserts



	10-24	5/16"-18, 3/8"-16, 7/16"-14	91456A211	0000000


	10-32	5/16"-18, 3/8"-16, 7/16"-14	91456A212	000000
	1/4"-20	3/8"-16, 7/16"-14, 1/2"-13	91456A213	000000
	1/4"-28	3/8"-16, 7/16"-14, 1/2"-13	91456A214	000000
	5/16"-18	7/16"-14, 1/2"-13, 9/16"-12	91456A215	000000
	5/16"-24	7/16"-14, 1/2"-13, 9/16"-12	91456A216	000000
	3/8"-16	1/2"-13, 9/16"-12, 5/8"-11	91456A217	000000
	3/8"-24	1/2"-13, 9/16"-12, 5/8"-11	91456A218	000000
	1/2"-13	5/8"-11, 11/16"-11, 13/16"-16	91456A219	000000
	1/2"-20	5/8"-11, 11/16"-11, 13/16"-16	91456A221	000000
	M5 × 0.8 mm	M8 × 1.25 mm, M10 × 1.25 mm	91456A621	000000


	M6 × 1 mm	M10 × 1.25 mm, M12 × 1.25 mm	91456A622	000000
	M8 × 1.25 mm	M12 × 1.25 mm, M14 × 1.5 mm	91456A623	000000
	M10 × 1.5 mm	M14 × 1.5 mm, M16 × 1.5 mm	91456A624	000000
	M12 × 1.75 mm	M16 × 1.5 mm, M18 × 1.5 mm	91456A625	000000

Helical Threaded Insert Installation and Prong Break-Off Tools

T-Handle

Install helical inserts and break off prongs with one tool and a hammer strike. These tools have a slot that grips your insert’s prong for turning both left- and right-hand threads. Slide an insert onto these tools and drive them a quarter-turn to half-turn below the material’s surface. Then, strike the end of the tool with a hammer to break off the prong. These tools work with pronged helical inserts.

For Pipe Size	Handle Style		Each



5/8"-11, 5/8"-18, M16 × 1.5 mm, M16 × 2 mm	3/8 NPT	T-Handle	92450A185	000000

Helical Threaded Insert Installation Tools

No Handle

Install your pronged helical inserts into tapped holes. Screw an insert onto these tools and drive them a quarter to half-turn below the material’s surface.

Square Shank—These tools don’t have a handle. Attach them to a tap wrench to turn.

	Shank Type	For Use With		Each
Metric Thread



	M16 × 1.5 mm	Square	Helical Inserts, Screw-Locking Helical Inserts	93060A111	000000


	M16 × 2 mm	Square	Helical Inserts, Screw-Locking Helical Inserts	93060A112	00000