7/8"-14 Threaded Rods | 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.

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

	Hardness	Specs. Met		Each
Steel







	7/8"-14

	4"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98750A516	00000


	6"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98750A517	00000
	1 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A410	00000
	2 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A815	00000
	3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A121	00000
	4 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A146	00000
	5 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A147	00000
	6 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A221	00000
	8 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A148	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.

Black-Oxide Steel—Typically chosen for their appearance, these rods have a dark, matte coating that creates 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 rods to rust.

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







	7/8"-14

	4"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N69	000000


	6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N71	00000
	1 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N815	00000
	2 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N816	00000
	3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N817	00000
	6 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3313N818	000000


	Black-Oxide Steel







					7/8"-14

					4"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N64	00000


					6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N65	00000
					1 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N769	00000
					2 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N77	00000
					3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N771	00000
					6 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	3314N772	000000


					Steel







									7/8"-14

									4"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A210	00000


									6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A211	00000
									1 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A212	00000
									2 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A213	00000
									3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A214	00000
									4 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A393	00000
									6 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A216	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







	7/8"-14

	2	50,000	Rockwell B61	1	90032A037	000000


	3	50,000	Rockwell B61	1	98842A037	00000
	6	50,000	Rockwell B61	1	98915A037	00000


	Steel







					7/8"-14

					1	50,000	Rockwell B61	1	98791A057	0000


					2	50,000	Rockwell B61	1	98791A037	00000
					3	50,000	Rockwell B61	1	98838A037	00000
					6	50,000	Rockwell B61	1	98911A037	00000

Stainless Steel

More corrosion resistant than steel rods and comparable in strength to low-strength steel.

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

	Pkg. Qty.		Pkg.
18-8 Stainless Steel







	7/8"-14

	4"	70,000	Rockwell B70	1	95412A354	000000


	6"	70,000	Rockwell B70	1	95412A355	00000
	1 ft.	70,000	Rockwell B70	1	98804A513	00000
	2 ft.	70,000	Rockwell B70	1	98805A037	00000
	3 ft.	70,000	Rockwell B70	1	98848A037	00000
	6 ft.	70,000	Rockwell B70	1	98921A037	000000
	12 ft.	70,000	Rockwell B70	1	98921A420	000000

Left-Hand Threaded Rods

Turn these rods to the left to tighten. Use them with left-hand nuts to prevent counterclockwise-moving parts from loosening.

Medium-Strength Steel

Image of Product. Front orientation. Contains Annotated. Threaded Rods. Left-Hand Threaded Rods.

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

	Hardness	Specs. Met		Each
Steel







	7/8"-14

	1	125,000	ASTM Grade B7	Rockwell C34	ASTM A193	95625A313	000000


	3	125,000	ASTM Grade B7	Rockwell C34	ASTM A193	95625A041	00000
	6	125,000	ASTM Grade B7	Rockwell C34	ASTM A193	95625A192	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



		7/8"-14	2 1/2"	1 1/4"	Fully Threaded	90264A255	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.

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



		7/8"-14	2 1/2"	1 1/4"	SAE Grade 5	Fully Threaded	90977A225	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



		7/8"-14	2 1/2"	1 5/16"	SAE Grade 8	Fully Threaded	90983A235	000000	000000	000000

Brass

Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.

						Each
	Thread Size	Lg.	Wd.	Threading		1-9	10-49	50-Up
Brass



		7/8"-14	2 1/2"	1 1/4"	Fully Threaded	90465A328	000000	000000	000000

Ball Joint Rod Ends

Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They don’t come lubricated, so you’ll need to lubricate during installation and on an ongoing basis.

Oversized Shank—Rod ends with an oversized shank have a shank that is one size larger than the ID to handle greater stress.

Zinc-Plated Carbon Steel—Zinc-plated steel rod ends provide moderate corrosion resistance.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints



		7/8"-14	3 3/8"	2"	7/8"	7°	2"	7/8"	18,450	Zinc-Plated Carbon Steel	Right Hand, Left Hand	60645K79	0000000


		Ball Joints with Oversized Shank



				7/8"-14	3 3/8"	1 7/8"	3/4"	12°	2"	7/8"	22,800	Zinc-Plated Carbon Steel	Right Hand, Left Hand	60645K99	000000

Mil. Spec. Ball Joint Rod Ends

Made of cadmium-plated steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. They provide moderate corrosion resistance. All have a PTFE liner that allows smooth ball rotation and eliminates the need for lubrication. Liner meets SAE AS81820.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Mil. Spec.	Specs. Met	Material	Shank Thread Direction		Each
Ball Joints



		7/8"-14	3 3/8"	2"	7/8"	6°	2"	7/8"	34,500	MIL-B-81935	SAE AS81820 SAE AS81935	Cadmium-Plated Alloy Steel	Right Hand	2998K191	0000000

Internally Threaded Lubrication-Free Ball Joint Rod Ends


Ball Joint Rod End

A carbon fiber-reinforced insert or PTFE liner reduces wear, handles shock loads, and eliminates the need for lubrication. Made of steel, these rod ends generally handle higher loads than stainless steel, aluminum, and nylon rod ends. All are zinc plated, so they resist corrosion for a short time before the finish is consumed and the steel is exposed.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Shank Thread Direction		Each
Ball Joints



		7/8"-14	3 3/8"	1 7/8"	7/8"	7°	2"	7/8"	18,450	Zinc-Plated Chrome-Moly Steel	Right Hand	2458K42	000000

Internally Threaded Mil. Spec. Ball Joint Rod Ends

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Mil. Spec.	Specs. Met	Material	Shank Thread Direction		Each
Ball Joints



		7/8"-14	3 3/8"	1 7/8"	7/8"	6°	2"	7/8"	34,500	MIL-B-81935	SAE AS81820 SAE AS81935	Cadmium-Plated Alloy Steel	Right Hand	2998K391	0000000

Lubrication-Free Ball Joint Rod Ends

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints



		7/8"-14	3 3/8"	2"	7/8"	7°	2"	7/8"	18,450	Zinc-Plated Carbon Steel	Right Hand, Left Hand	2458K444	000000

High-Load Ball Joint Rod Ends

These steel rod ends handle loads that are at least 25% higher than other comparably sized rod ends. PTFE allows smooth rotation and eliminates the need for lubrication.

Oversized Shank—Rod ends with an oversized shank have a shank that is one size larger than the ID to handle greater stress.

Nylon/PTFE Insert—Rod ends with Nylon/PTFE insert have a durable, self-sealing insert that reduces wear.

Zinc-Plated Alloy Steel Insert—Rod ends with zinc-plated steel insert provide moderate corrosion resistance.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints







				Nylon/PTFE Insert

				7/8"-14	3 3/8"	2"	7/8"	7°	2"	7/8"	45,050	Chrome-Moly Steel	Right Hand, Left Hand	4483T9	000000




						Zinc-Plated Alloy Steel Insert and PTFE Liner

						7/8"-14	3 3/8"	1 7/8"	7/8"	12°	2"	7/8"	55,650	Zinc-Plated Alloy Steel	Right Hand, Left Hand	60745K71	00000


						Ball Joints with Oversized Shank







										Nylon/PTFE Insert

										7/8"-14	3 3/8"	1 7/8"	3/4"	12°	2"	7/8"	43,450	Chrome-Moly Steel	Right Hand, Left Hand	4475T17	00000

Internally Threaded High-Load Ball Joint Rod Ends

These steel rod ends handle loads that are at least 25% higher than other comparably sized rod ends. PTFE allows smooth rotation and eliminates the need for lubrication.

Zinc-Plated Alloy Steel Insert—Rod ends with zinc-plated steel insert provide moderate corrosion resistance.

	Shank
	Thread Size	Ctr. Lg.	Thread Lg.	ID	Max. Ball Swivel	Overall Wd.	Overall Thk.	Static Radial Load Cap., lb.	Material	Choose a Shank Thread Direction		Each
Ball Joints







				Zinc-Plated Alloy Steel Insert and PTFE Liner

				7/8"-14	3 3/8"	1 7/8"	7/8"	12°	2"	7/8"	45,050	Zinc-Plated Alloy Steel	Right Hand, Left Hand	60745K49	000000

Extreme-Pressure Iron and Steel Threaded Pipe Fittings

The strongest steel fittings we offer, these can withstand extreme-pressure applications.

Note: The maximum pressure listed for Class 6000 fittings is for conditions where there are no sudden changes in pressure or velocity. Please refer to ASME B16.11 to determine the specific maximum operating pressure for your application.

Straight Connectors with Gasket

Threaded Fitting

Connection, Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

Zinc-Plated Steel—Zinc-plated steel fittings have better corrosion resistance than plain steel fittings.

	Dash Size	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
UN/UNF (SAE Straight) Male



	7/8"-14	10	Hex	Zinc-Plated Steel	5,000 psi @ 72° F	Buna-N	50925K567	000000

Straight Adapters

Female x Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

Zinc-Plated Steel—Zinc-plated steel fittings have better corrosion resistance than plain steel fittings.

			Dash Size
	Thread Size (A)	Pipe Size (B)	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female × NPTF Male



		7/8"-14	1/2	10	08	Hex	Zinc-Plated Steel	4,500 psi @ 72° F	50925K546	000000

Straight Adapters with Gasket


Female x Male	Male x Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

Zinc-Plated Steel—Zinc-plated steel fittings have better corrosion resistance than plain steel fittings.

	Pipe Size		Thread Size		Dash Size
	(A)	(B)	(A)	(B)	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
NPTF Female × UN/UNF (SAE Straight) Male



		1/4	—	—	7/8"-14	04	10	Hex	Zinc-Plated Steel	5,000 psi @ 72° F	Buna-N	50925K453	00000


		3/8	—	—	7/8"-14	06	10	Hex	Zinc-Plated Steel	5,000 psi @ 72° F	Buna-N	50925K368	0000
		1/2	—	—	7/8"-14	08	10	Hex	Zinc-Plated Steel	5,000 psi @ 72° F	Buna-N	50925K457	0000
		3/4	—	—	7/8"-14	12	10	Hex	Zinc-Plated Steel	4,000 psi @ 72° F	Buna-N	50925K458	00000


		NPTF Male × UN/UNF (SAE Straight) Male



				1/2	—	—	7/8"-14	08	10	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K333	0000


				UN/UNF (SAE Straight) Female × BSPP Male



						—	1/2	7/8"-14	—	10	08	Hex	Zinc-Plated Steel	4,500 psi @ 72° F	Buna-N	4936K968	00000

Replacement Washers

	ID, mm	OD, mm	Thk., mm		Each
For BSPP Male



	1/2	18.64	28.58	2.5	4936K634	00000

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines.

Straight Connectors

Female

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

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

				316 Stainless Steel
	Thread Size	Dash Size	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female



		7/8"-14	10	Hex	4,800 psi @ 72° F	4,800 psi @ 200° F	51205K563	0000000

Straight Adapters

Female x Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

			Dash Size			316 Stainless Steel
	Thread Size (A)	Pipe Size (B)	(A)	(B)	Body Shape	Max. Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female × BSPT Male



		7/8"-14	1/2	10	08	Hex	4,500 psi @ 72° F	51205K826	000000

Straight Adapters with Gasket


Female x Male	Male x Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

		Thread Size		Dash Size				316 Stainless Steel
	Pipe Size (A)	(A)	(B)	(A)	(B)	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Female × UN/UNF (SAE Straight) Male



		1/4	—	7/8"-14	04	10	Hex	Buna-N	6,600 psi @ 72° F	6,600 psi @ 200° F	51205K551	000000


		3/8	—	7/8"-14	06	10	Hex	Buna-N	6,600 psi @ 72° F	6,600 psi @ 200° F	51205K552	00000
		1/2	—	7/8"-14	08	10	Hex	Buna-N	6,000 psi @ 72° F	6,000 psi @ 200° F	51205K553	00000
		3/4	—	7/8"-14	12	10	Hex	Buna-N	4,800 psi @ 72° F	4,800 psi @ 200° F	51205K554	00000


		NPTF Male × UN/UNF (SAE Straight) Male



				1/2	—	7/8"-14	08	10	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K523	00000


				UN/UNF (SAE Straight) Female × Metric Male



						—	7/8"-14	M22 × 1.5 mm	10	—	Hex	Buna-N	3,500 psi @ 72° F	—	51205K786	00000


						Metric Female × UN/UNF (SAE Straight) Male



								—	M22 × 1.5 mm	7/8"-14	—	10	Hex	Buna-N	5,000 psi @ 72° F	—	51205K767	000000

Straight Reducing Adapters with Gasket

Female x Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

	Thread Size		Dash Size				316 Stainless Steel
	(A)	(B)	(A)	(B)	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female × UN/UNF (SAE Straight) Male



		7/16"-20	7/8"-14	04	10	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K536	000000


		9/16"-18	7/8"-14	06	10	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K537	00000
		3/4"-16	7/8"-14	08	10	Hex	Buna-N	4,800 psi @ 72° F	4,800 psi @ 200° F	51205K538	00000
		7/8"-14	3/4"-16	10	08	Hex	Buna-N	3,600 psi @ 72° F	3,600 psi @ 200° F	51205K535	00000
		7/8"-14	1 1/16"-12	10	12	Hex	Buna-N	3,600 psi @ 72° F	3,600 psi @ 200° F	51205K544	00000
		1 1/16"-12	7/8"-14	12	10	Hex	Buna-N	4,200 psi @ 72° F	4,200 psi @ 200° F	51205K539	00000

Locknuts

					303 Stainless Steel
	Pipe Size	Dash Size	Gasket Material	Max. Pressure @ Temp.		Each
NPT Female



		1/2	08	PTFE	10,000 psi @ 72° F	5530K44	000000