1 1/2"-12 Fasteners | McMaster-Carr

With tensile strengths from 110,000 psi to 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also medium-strength steel.

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

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

	Hardness	Specs. Met		Each
Zinc-Yellow-Chromate-Plated Steel







	1 1/2"-12

	6"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	99086A359	000000


	1 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	99086A374	00000
	3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	99086A335	000000


	Steel







					1 1/2"-12

					6"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98750A529	00000


					1 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A416	00000
					2 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A825	000000
					3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A118	000000
					6 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A218	000000

High-Strength Steel

With a tensile strength of 150,000 psi, these rods are strong enough to stabilize steel frameworks and structural supports, such as I-beams. They are about 25% stronger than medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also high-strength steel.

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

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

	Hardness	Specs. Met		Each
Zinc-Yellow-Chromate-Plated Steel







	1 1/2"-12

	3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N115	0000000


	Steel







					1 1/2"-12

					6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A364	00000


					1 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A365	00000
					2 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A366	000000
					3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A245	000000
					6 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A246	000000

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.

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

	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	1 1/2"-12

	3	50,000	Rockwell B61	1	98842A041	0000000


	6	50,000	Rockwell B61	1	98915A041	000000


	Steel







					1 1/2"-12

					1	50,000	Rockwell B61	1	98790A450	00000


					2	50,000	Rockwell B61	1	98791A041	00000
					3	50,000	Rockwell B61	1	98838A041	000000
					6	50,000	Rockwell B61	1	98911A041	000000

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.

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



	1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 5	ASME B18.2.2	1	95462A565	00000


	Black-Oxide Steel



			1 1/2"-12	2 1/4"	1 5/16"	SAE Grade 5	ASME B18.2.2	1	95479A909	00000


			Steel



					1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 5	ASME B18.2.2	1	95505A629	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-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.

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

Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated Steel



	1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 8	1	94895A865	000000


	Black-Oxide Steel



			1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 8	1	94895A730	00000


			Steel



					1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 8	1	90499A865	0000


					Zinc-Flake-Coated Steel



							1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 8	1	93827A299	0000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. 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.

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

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



	1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 2	ASME B18.2.2	1	90473A265	00000


	Steel



			1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 2	ASME B18.2.2	1	90490A265	0000

Corrosion-Resistant Stainless Steel

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

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 1/2"-12	2 1/4"	1 9/32"	1	91845A265	00000

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

		Head
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				1 1/2"-12

				3"	2 1/4"	1 1/2"	Fully Threaded	Fine	170,000	ASTM A574	1	91251A607	000000


				3 1/2"	2 1/4"	1 1/2"	Fully Threaded	Fine	170,000	ASTM A574	1	91251A035	00000
				4"	2 1/4"	1 1/2"	Fully Threaded	Fine	170,000	ASTM A574	1	91251A608	00000
				4 1/2"	2 1/4"	1 1/2"	Fully Threaded	Fine	170,000	ASTM A574	1	91251A641	00000
				5"	2 1/4"	1 1/2"	Partially Threaded	Fine	170,000	ASTM A574	1	91251A609	00000
				5 1/2"	2 1/4"	1 1/2"	Partially Threaded	Fine	170,000	ASTM A574	1	91251A643	00000
				6"	2 1/4"	1 1/2"	Partially Threaded	Fine	170,000	ASTM A574	1	91251A610	00000
				7"	2 1/4"	1 1/2"	Partially Threaded	Fine	170,000	ASTM A574	1	91251A611	00000
				8"	2 1/4"	1 1/2"	Partially Threaded	Fine	170,000	ASTM A574	1	91251A612	00000

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



	1 1/2"-12	2 1/4"	27/32"	SAE Grade 5	ASME B18.2.2	1	94846A565	000000


	Steel



			1 1/2"-12	2 1/4"	27/32"	SAE Grade 5	ASME B18.2.2	1	94846A227	0000

High-Strength Steel

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

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



	1 1/2"-12	2 1/4"	27/32"	SAE Grade 8	ASME B18.2.2	1	93839A865	000000


	Steel



			1 1/2"-12	2 1/4"	27/32"	SAE Grade 8	ASME B18.2.2	1	92052A370	00000

Low-Strength Steel

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



	1 1/2"-12	2 1/4"	27/32"	SAE Grade 2	1	91078A265	00000


	Steel



			1 1/2"-12	2 1/4"	27/32"	SAE Grade 2	1	90494A241	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.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 1/2"-12	2 1/4"	27/32"	1	91847A441	00000


	Highly Corrosion-Resistant 316 Stainless Steel



			1 1/2"-12	2 1/4"	27/32"	1	94805A268	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.	Ht.	Pkg. Qty.		Pkg.
Brass



	1 1/2"-12	2 1/4"	27/32"	1	92174A690	000000

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.

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



	1 1/2"-12	2 3/8"	1 15/32"	ASTM Grade 2H	ASTM A194	1	90521A052	000000

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.

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



		1 1/2"-12	3 1/2"	2"	Fully Threaded	90264A295	000000	000000	000000

High-Strength Steel

Rated Grade 8 or Class 10, these are about 25% stronger than 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.

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



		1 1/2"-12	3 1/2"	2 1/4"	SAE Grade 8	Fully Threaded	90983A263	0000000	000000	000000

High-Profile Hex Nuts

Slightly taller than standard-profile hex nuts, 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.

High-Strength Steel

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

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



	1 1/2"-12	2 3/16"	2"	SAE Grade 8	SAE J995	1	90565A061	000000

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

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.

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

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



	1 1/2"-12	2 13/64"	1 39/64"	SAE Grade 8	220	1	97135A114	000000


	Black-Oxide Steel



			1 1/2"-12	2 13/64"	1 39/64"	SAE Grade 8	220	1	97135A442	00000


			Steel



					1 1/2"-12	2 13/64"	1 39/64"	SAE Grade 8	220	1	90630A207	00000

Thin-Heavy-Profile Nylon-Insert Locknuts

About half the height of standard-profile locknuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against a hex nut to hold it in place. 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

Black-Phosphate-Coated Steel—The dark coating creates both a finished appearance and a barrier against rust that withstands occasional exposure to moisture.

	Wd.	Ht.	Fastener Strength Grade/Class	Insert Max. Temp., ° F		Each
Black-Phosphate-Coated Steel



	1 1/2"-12	2 3/8"	1 5/16"	ASTM Grade C	250	93126A120	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		Inserts with Installation Tools
	Thread Size	Installed Lg.	Drill Bit Size	For Max. Hole Dia.	Specs. Met	Pkg. Qty.		Pkg.		Each		Each	No. of Inserts Included		Each
Pronged







				18-8 Stainless Steel

				1 1/2"-12	2.250"	1 17/32"	1.531"	MS124709	1	91732A054	000000	91709A083	0000000	91709A521	0000000	4	91732A137	000000000

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



	1 1/8"-7, 1 1/8"-12, 1 1/4"-7, 1 1/4"-8, 1 1/4"-12, 1 3/8"-6, 1 3/8"-12, 1 1/2"-6, 1 1/2"-8, 1 1/2"-12, M27, M30, M36, M39	90254A360	0000000

Thin-Profile Flex-Top Locknuts for Heavy Vibration

About two-thirds the height of standard flex-top nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use 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.

Steel

These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Cadmium-Plated Steel—These locknuts have good lubricity to thread on smoothly and ease installation. The plating also creates a barrier against rust that's comparable to zinc-yellow-chromate plating.

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

	Wd.	Ht.	Pkg. Qty.		Pkg.
Cadmium-Plated Steel



	1 1/2"-12	2 3/16"	57/64"	1	94830A123	000000


	Steel



			1 1/2"-12	2 3/16"	57/64"	1	94830A144	00000

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 Thick-Wall Inserts



	1 1/8"-7, 1 1/8"-12	1 1/2"-12	A	Slotted End	6721N45	000000


	For Extra-Thick-Wall Inserts



			1"-8, 1"-12	1 1/2"-12	A	Slotted End	6721N64	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 Extra-Thick-Wall Inserts



	1"-8	1 1/2"-12	D	Sleeve, Slotted End	93904A777	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.

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

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



	1 1/2"-12	2 1/4"	27/32"	SAE Grade 5	1	99612A227	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.

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



	1 1/2"-12	2 1/4"	27/32"	ASME B18.2.2	1	94450A541	000000

Brass

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

	Wd.	Ht.		Each
Brass



	1 1/2"-12	2 1/4"	27/32"	92117A940	000000

Locknuts for use with Cotter Pins

Use these locknuts to secure rotating parts subjected to mild vibration, such as the wheels on carts and hand trucks. They’re not recommended for use on parts exposed to high vibration because the pin can shear under prolonged stress. These nuts are reusable, but you'll need a new cotter pin (not included) with each use.

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.	Ht.	For Cotter Pin Dia.	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1 1/2"-12	2 1/4"	1 5/16"	5/16"	1	95030A380	000000


	Black-Oxide Steel



			1 1/2"-12	2 1/4"	1 9/32"	5/16"	1	95030A610	00000

Thin-Profile Nylon-Insert Locknuts

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

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



	1 1/2"-12	2 3/16"	51/64"	SAE Grade 8	Not Rated	1	94945A290	000000


	Black-Oxide Steel



			1 1/2"-12	2 11/64"	51/64"	SAE Grade 8	250	1	94945A117	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.

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



	1 1/2"-12	2 1/4"	1 5/16"	ASTM Grade C	1	92501A546	00000

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

	1 1/2"-12	2.250"	1 17/32"	1.531"	4	Drill Bit Installation Tool Through-Hole Tap	91732A137	000000000

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.

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







	Black Phosphate-Coated Steel

	1 1/8"-7	1 1/2"-12	1.438"	1 7/16"	1.438"	4	2	90245A063	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.

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.

Extra-Thick Wall—Stronger than standard- and thin-wall inserts, use them to reduce the size of tapped holes or replace threads that have been drilled out.

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.	Drill Bit Size	For Max. Hole Dia.	No. of Locking Keys	Specs. Met		Each		Each
Extra-Thick Wall







				18-8 Stainless Steel

				1"-8	1 1/2"-12	1.375"	1 7/16"	1.442"	4	MS51832-111	93904A253	000000	93904A777	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
Standard (UN) Thread







	For Thick-Wall Inserts

	1 1/8"-7, 1 1/8"-12	1 1/2"-12	Straight	92100A749	0000000


	1 1/2"-6, 1 1/2"-12	1 7/8"-12	Straight	92100A758	000000




			For Extra-Thick-Wall Inserts

			1"-8, 1"-12	1 1/2"-12	Straight	93302A740	00000

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.

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

Extra-Thick Wall—Stronger than standard- and thin-wall inserts, use them to reduce the size of tapped holes or replace threads that have been drilled out.

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

				1 1/8"-7	1 1/2"-12	1.438"	1 7/16"	1.438"	4	90245A091	000000	000000	92100A749	0000000	2	90245A063	0000000


				1 1/8"-12	1 1/2"-12	1.438"	1 7/16"	1.438"	4	90245A096	00000	00000	92100A749	000000	—	———	0
				1 1/2"-12	1 7/8"-12	2"	—	1.813"	4	90245A113	000000	000000	92100A758	000000	—	———	0


				Extra-Thick Wall







								Black Phosphate-Coated Steel

								1"-8	1 1/2"-12	1.375"	1 7/16"	1.438"	4	93302A650	00000	00000	93302A740	00000	—	———	0




										18-8 Stainless Steel

										1"-8	1 1/2"-12	1.375"	1 7/16"	1.438"	4	93340A835	000000	000000	93302A740	00000	—	———	0