M7 Fasteners | McMaster-Carr

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Finish

Zinc Yellow-Chromate Plated

Thread Spacing

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Thread Direction

Right Hand and Left Hand

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Not Rated

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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129 Products

Steel Socket Head Screws


Fully Threaded	Partially Threaded

Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.

Length is measured from under the head.

Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.

		Head, mm
	Lg., mm	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				M7 × 1 mm

				16	12	7	Fully Threaded	Coarse	170,000	Class 12.9	1	91290A162	00000


				20	12	7	Fully Threaded	Coarse	170,000	Class 12.9	1	91290A165	0000
				25	12	7	Fully Threaded	Coarse	170,000	Class 12.9	1	91290A166	0000
				30	12	7	Partially Threaded	Coarse	170,000	Class 12.9	1	91290A167	0000
				50	12	7	Partially Threaded	Coarse	170,000	Class 12.9	1	91290A169	0000

Steel Hex Head Screws


Fully Threaded	Partially Threaded

Our most popular hex head screws. These have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.

Length is measured from under the head.

Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

		Head, mm
	Lg., mm	Wd.	Ht.	Threading	Thread Spacing	Fastener Strength Grade/Class	Tensile Strength, psi	Pkg. Qty.		Pkg.
Medium-Strength Zinc-Plated Steel







				M7 × 1 mm

				10	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A977	00000


				12	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A410	0000
				16	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A412	0000
				20	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A414	00000
				25	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A416	0000
				30	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A418	00000
				35	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	10	91280A421	0000
				40	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A423	00000
				45	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A426	00000
				50	11	4.8	Fully Threaded	Coarse	Class 8.8	110,000	25	91280A429	00000
				60	11	4.8	Partially Threaded	Coarse	Class 8.8	110,000	10	91180A125	0000


				70	11	4.8	Partially Threaded	Coarse	Class 8.8	110,000	10	91180A126	0000

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.

Low-Strength Steel

With a tensile strength of 50,000 psi or 60,000 psi, these rods are often used to suspend light fixtures, cable trays, and conduit from ceilings. They're about half the strength of medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also low-strength steel.

Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.

	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	M7 × 1 mm

	1	50,000	Rockwell B49	DIN 976	1	93000A615	000000

Ultra-Low-Profile Steel Socket Head Screws

Our lowest-profile socket head screws. At about one-third the height of standard ones, these fit in the tightest spaces and shallowest holes, reducing the risk of snagging. However, they aren't as strong as screws with larger heads. Tighten with a hex key.

Length is measured from under the head.

Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.

		Head, mm
	Lg., mm	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi		Each
Black-Oxide Alloy Steel







				M7 × 1 mm

				10	12	2.7	Fully Threaded	Coarse	140,000	90358A139	00000


				12	12	2.7	Fully Threaded	Coarse	140,000	90358A140	0000
				14	12	2.7	Fully Threaded	Coarse	140,000	90358A141	0000
				20	12	2.7	Fully Threaded	Coarse	140,000	90358A142	0000
				25	12	2.7	Fully Threaded	Coarse	140,000	90358A143	0000

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.

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

Medium-Strength Steel

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

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



	M7 × 1 mm	11	7.5	Class 8	185	DIN 985, ISO 10511	25	90576A212	00000

Steel Flanged Hex Head Screws

Fully Threaded

Our most popular flanged hex head screws. These have a flange that spreads pressure over a wide area to protect thin and soft materials. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.

Head height includes the flange. Length is measured from under the flange.

Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.

Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.

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

		Head, mm
	Lg., mm	Wd.	Ht.	Flange Dia., mm	Threading	Thread Spacing	Fastener Strength Grade/Class	Tensile Strength, psi	Pkg. Qty.		Pkg.
Medium-Strength Zinc-Yellow-Chromate-Plated Steel







				M7 × 1 mm

				16	9	7	14.5	Fully Threaded	Coarse	Class 8.8	110,000	25	94036A384	00000


				20	9	7	14.5	Fully Threaded	Coarse	Class 8.8	110,000	25	94036A385	0000
				25	9	7	14.5	Fully Threaded	Coarse	Class 8.8	110,000	25	94036A386	0000
				30	9	7	14.5	Fully Threaded	Coarse	Class 8.8	110,000	25	94036A387	0000

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



	M7 × 1 mm	11	5.5	Class 8	DIN 934	100	90591A154	00000


	Zinc-Yellow-Chromate-Plated Steel



			M7 × 1 mm	11	5.5	Class 8	DIN 934	100	97700A150	0000


			Black-Oxide Steel



					M7 × 1 mm	11	5.5	Class 8	DIN 934	25	90593A006	00000


					Steel



							M7 × 1 mm	11	5.5	Class 8	DIN 934	100	90592A018	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.

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.

Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these nuts will hold up in just about any environment, including salt water and most chemicals.

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



	M7 × 1 mm	11	5.5	DIN 934	25	91828A255	00000


	Black-Oxide 18-8 Stainless Steel



			M7 × 1 mm	11	5.5	DIN 934	10	98676A116	0000


			Highly Corrosion-Resistant 316 Stainless Steel



					M7 × 1 mm	11	5.5	DIN 934	25	94150A116	00000


					Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel



							M7 × 1 mm	11	5.5	DIN 934	10	92233A117	00000

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



	M7 × 1 mm	11	5.5	DIN 934	10	90690A052	00000

12-Point-Drive Flange Nuts

The star-shaped head has more points of contact than a hex head nut, so you can achieve a better grip and a tighter fit without flattening the sides of the nut. Great for cramped spaces without a lot of clearance, these nuts twist on from any angle with a standard wrench. They have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.

Steel

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

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.		Each
Black-Oxide Steel



		M7 × 1 mm	9	7	12	1.6	90759A730	00000

Corrosion-Resistant Stainless Steel

High-Temperature A286 Stainless Steel—Stronger than 316 stainless steel and withstand high temperatures up to 1500° F. These nuts resist corrosion from chemicals, such as bleach and chlorine, but they won't hold up to salt water as well as 316 stainless steel.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.		Each
High-Temperature A286 Stainless Steel



		M7 × 1 mm	9	7	12	1.6	90997A220	00000

Eyebolts—For Lifting

Create a secure attachment point for hooks, shackles, and other lifting equipment. Also known as machinery eyebolts, these eyebolts are used to lift heavy machines and materials. They have a closed eye that won’t bend under strain.

Warning: Never use to lift people or items over people. Capacities listed are for vertical lifting only.

Steel

With

Shoulder

With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.

	Thread						With Shoulder
	Size	Lg., mm	Shank Lg., mm	Eye Dia., mm	Vert. Cap., lb.	Threading	Overall Lg., mm		Each
Closed Eye



		M7 × 1 mm	14	14	22	800	Fully Threaded	56	3040T12	00000

Galvanized Steel

With

Shoulder

Galvanized steel eyebolts have a hot-dipped finish for more corrosion resistance than zinc-plated steel.

With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.

	Thread						With Shoulder
	Size	Lg., mm	Shank Lg., mm	Eye Dia., mm	Vert. Cap., lb.	Threading	Overall Lg., mm		Each
Closed Eye



		M7 × 1 mm	29	29	22	800	Fully Threaded	70	4843T12	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.

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	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M7 × 1 mm	11	5.5	DIN 980, ISO 7042	5	90045A114	000000

Metric Ultra-Precision Lead Screws and Nuts


	Style B

Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest. To ensure compatibility, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts.

Externally Threaded Nuts—Right-Hand Thread

Style B

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

										External Thread
	Style	Thread Size	Lg.	Wd.	Ht.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
PEEK



		B	M3 × 0.5 mm	13/32"	0.311"	0.276"	Metric Rounded Trapezoidal	1:1	1	0.5	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	5	90500A230	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.

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



	M7 × 1 mm	11	3.5	Class 04	DIN 439B, ISO 4035	100	90695A152	000000

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



	M7 × 1 mm	11	5.5	Class 8	5	92048A130	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


Crank Handle	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.

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



	M7 × 1 mm	—	Crank	Threaded	Helical Inserts, Screw-Locking Helical Inserts	1338N58	000000


	M7 × 1 mm	Heli-Coil	Crank	Threaded	Helical Inserts, Screw-Locking Helical Inserts	90261A193	000000

Metric Fast-Travel Ultra-Precision Lead Screws and Nuts


	Style C

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size and number of thread starts.

Externally Threaded Nuts—Right-Hand Thread

Style C

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

										External Thread
	Style	Thread Size	Lg.	Wd.	Ht.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.		Each
PEEK



		C	M3 × 0.5 mm	13/32"	0.311"	0.276"	Metric Rounded Trapezoidal	2:1	2	1	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	4	4537N164	000000


		C	M3 × 0.5 mm	13/32"	0.311"	0.276"	Metric Rounded Trapezoidal	6:1	6	3	M7 × 0.75 mm	5/32"	Durometer 83D	Not Rated	4	4537N165	00000

Air-Powered Helical Threaded Insert Installation Tools

Install standard and prongless helical inserts in high-volume production and assembly. Powered by compressed air, these tools deliver more force than electric tools. Use them to install a wide range of insert sizes. Press the lever to install the insert, then release to reverse out. These tools require a nosepiece and nosepiece adapter (both sold separately).

					Air Inlet
Threaded Insert Tool Cycle Time, sec.	Max. Speed @ 90 psi, rpm	Overall Lg.	Wt., lb.	Average Air Consumption @ Pressure	Pipe Size	Thread Type	Gender		Each
5	1,500	5 3/4"	0.9	14.4 ft³/min @ 90 psi	1/4	NPT	Female	8868N11	000000000

Accessories and Replacements for Threaded Insert Installation Tools

Easy-Start Nosepiece Adapters

Required to attach an easy-start nosepiece to the tool.

For Thread Size		Each
2-56, 4-40, 6-32, 6-40, 8-32, 8-36, 10-24, 10-32, 1/4"-20, 1/4"-28, M2.5, M3, M3.5, M4, M5, M6, M7	8868N12	0000000
5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M8, M10, M12	8868N13	000000

For Thread Size		Each
2-56, 4-40, M2.5, M3	8868N14	0000000

Easy-Start Nosepieces

Image of Product. Front orientation. Threaded Insert Installation Tool Nosepieces. Air-Powered Helical Threaded Insert Installation Tools.

Compress the insert’s diameter and align each coil with the thread pitch to easily install the insert straight into a tapped hole. They work with loose and strip-feed inserts. Also known as prewinders.

		For Pronged Helical Inserts			For Prongless Helical Inserts
For Thread Size	For Use With	Max. Air Pressure, psi		Each	Max. Air Pressure, psi		Each
2-56	Helical Inserts, Screw-Locking Helical Inserts	20	8868N35	0000000	15	8868N15	0000000
4-40	Helical Inserts, Screw-Locking Helical Inserts	20	8868N36	000000	20	8868N16	000000
6-32	Helical Inserts, Screw-Locking Helical Inserts	30	8868N37	000000	30	8868N17	000000
8-32	Helical Inserts, Screw-Locking Helical Inserts	40	8868N38	000000	30	8868N18	000000
10-24	Helical Inserts, Screw-Locking Helical Inserts	40	8868N39	000000	40	8868N19	000000
10-32	Helical Inserts, Screw-Locking Helical Inserts	40	8868N45	000000	30	8868N24	000000
1/4"-20	Helical Inserts, Screw-Locking Helical Inserts	45	8868N41	000000	45	8868N21	000000
1/4"-28	Helical Inserts, Screw-Locking Helical Inserts	45	8868N46	000000	45	8868N25	000000
5/16"-18	Helical Inserts, Screw-Locking Helical Inserts	50	8868N42	000000	50	8868N22	000000
5/16"-24	Helical Inserts, Screw-Locking Helical Inserts	50	8868N47	000000	50	8868N26	000000
3/8"-16	Helical Inserts, Screw-Locking Helical Inserts	60	8868N43	000000	60	8868N23	000000
3/8"-24	Helical Inserts, Screw-Locking Helical Inserts	60	8868N48	000000	60	8868N27	000000
7/16"-20	Helical Inserts, Screw-Locking Helical Inserts	50	8868N49	000000	—	———	0
1/2"-13	Helical Inserts, Screw-Locking Helical Inserts	80	8868N44	000000	—	———	0
1/2"-20	Helical Inserts, Screw-Locking Helical Inserts	80	8868N51	000000	—	———	0
M2.5 × 0.45 mm	Helical Inserts, Screw-Locking Helical Inserts	20	8868N52	000000	15	8868N28	000000
M3 × 0.5 mm	Helical Inserts, Screw-Locking Helical Inserts	30	8868N53	000000	20	8868N29	000000
M4 × 0.7 mm	Helical Inserts, Screw-Locking Helical Inserts	40	8868N54	000000	30	8868N31	000000
M5 × 0.8 mm	Helical Inserts, Screw-Locking Helical Inserts	40	8868N55	000000	30	8868N32	000000
M6 × 1 mm	Helical Inserts, Screw-Locking Helical Inserts	45	8868N56	000000	40	8868N33	000000
M8 × 1 mm	Helical Inserts, Screw-Locking Helical Inserts	50	8868N58	000000	—	———	0
M8 × 1.25 mm	Helical Inserts, Screw-Locking Helical Inserts	50	8868N57	000000	50	8868N34	000000
M10 × 1.5 mm	Helical Inserts, Screw-Locking Helical Inserts	50	8868N59	000000	—	———	0
M12 × 1.75 mm	Helical Inserts, Screw-Locking Helical Inserts	60	8868N61	000000	—	———	0

Replacement Tips

Replacement installation tool tips for nosepieces include one installation tip, two pins, and two springs.

		Each
For Prongless Helical Inserts



	2-56	91049A702	000000


	4-40	91049A705	00000
	6-32	91049A708	00000
	8-32	91049A711	00000
	10-24	91049A714	00000
	10-32	91049A914	00000
	1/4"-20	91049A720	00000
	1/4"-28	91049A209	00000
	5/16"-18	91049A207	00000
	5/16"-24	91049A210	00000
	3/8"-16	91049A208	00000


	3/8"-24	91049A211	00000
	M2.5 × 0.45 mm	91049A750	00000
	M3 × 0.5 mm	91049A752	00000
	M4 × 0.7 mm	91049A754	00000
	M5 × 0.8 mm	91049A756	00000
	M6 × 1 mm	91049A758	00000
	M8 × 1.25 mm	91049A204	00000

Helical Threaded Insert Assortments with Installation Tools

Repair damaged threads or create new ones. These convenient assortments include helical inserts, an installation tool for each thread size, a drill bit, and a tap. The inserts are also known as Heli-Coil inserts.

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.

	Drill Bit Size	For Max. Hole Dia.		Each
Pronged







	18-8 Stainless Steel

	18	Drill Bit Installation Tool M7×1 mm Thread × 10.5 mm Installed Lg. (6 Each) M7×1 mm Thread × 14 mm Installed Lg. (6 Each) M7×1 mm Thread × 7 mm Installed Lg. (6 Each) Through-Hole Tap	Coarse	9/32"	0.281"	91732A949	000000

Helical Threaded Insert Installation and Prong Break-Off Tools

L-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



5/16"-18, M7 × 1 mm	1/16 NPT	L-Handle	92450A178	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



	M7 × 1 mm	Square	Helical Inserts, Screw-Locking Helical Inserts	93060A096	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

	M7 x 1 mm	10.5	7.25	0.281"	10	Drill Bit Installation Tool Through-Hole Tap	91732A950	000000

Spring-Loaded Helical Threaded Insert Prong Break-Off Tools

Cleanly snap prongs off installed helical inserts with just one hand. Because they work faster than standard prong break-off tools, these are a good choice when you have many prongs to remove. Press your tool into an insert to trigger the spring-loaded punch and snap off the prong.

For Standard-Length Inserts—Use these tools for inserts that are 1 to 2 times as long as the diameter.

For Long Inserts—Use these tools for inserts that are 2 _1/2 to 3 times as long as the diameter.

	Mfr.		Each
For Standard-Length Inserts



	1/4"-20, 1/4"-28, 1/4"-32, M6, M7	—	92955A317	000000


	M7	Heli-Coil	92955A205	000000


	For Long Inserts



			1/4"-20, 1/4"-28, M6, M7	—	92955A417	00000

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		Prong Break-Off Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each
Pronged







				18-8 Stainless Steel

				M7 x 1 mm	7	7.3	7.3	SAE MA3329-107	10	90296A311	00000	91709A203	000000	91709A536	000000	90261A193	0000000	92955A205	0000000


				M7 x 1 mm	10.5	7.3	7.3	SAE MA3329-157	10	90296A312	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000
				M7 x 1 mm	14	7.3	7.3	DIN 8140, SAE MA3329-207	5	90296A313	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	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		Prong Break-Off Tools		Inserts with Installation Tools
	Thread Size	Installed Lg., mm	Drill Bit Size, mm	For Max. Hole Dia., mm	Specs. Met	Pkg. Qty.		Pkg.		Each		Each		Each		Each	No. of Inserts Included		Each
Pronged







				18-8 Stainless Steel

				M7 x 1 mm	7	7.3	7.3	DIN 8140, SAE MA3279-107	10	91732A639	00000	91709A203	000000	91709A536	000000	90261A193	0000000	92955A205	0000000	—	———	0


				M7 x 1 mm	10.5	7.3	7.3	DIN 8140, SAE MA3279-157	10	91732A263	0000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	000000	10	91732A950	000000
				M7 x 1 mm	14	7.3	7.3	DIN 8140, SAE MA3279-207	10	91732A785	00000	91709A203	00000	91709A536	00000	90261A193	000000	92955A205	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



	10-24, 10-32, 12-24, 12-28, 1/4"-20, 1/4"-28, 1/4"-32, 1/4"-80, 5/16"-18, 5/16"-24, 5/16"-32, 3/8"-16, 3/8"-24, M5, M6, M7, M8, M10	90254A320	000000