9/16"-18 Threaded Rods | McMaster-Carr

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System of Measurement

Thread Size

Material

Thread Type

UN/UNF (SAE Straight)

Threading

Threaded on Both Ends

Nut Type

Component

Thread Direction

Fastener Strength Grade/Class

ASTM Grade B7

ASTM Grade BD

Thread Spacing

Fine

Tensile Strength

10,000 psi to 19,999 psi

40,000 psi to 99,999 psi

100,000 psi or greater

Not Rated

Thread Fit

Acme Class 2C

Metric Trapezoidal Class 7H

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Fastener Strength Rating

Low

Medium

High

Travel Distance per Turn

Number of Thread Starts

Thread Pitch

Diameter

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

Hardness

Finish

DFARS Specialty Metals

Specifications Met

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

REACH

117 Products

Threaded Rods

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

Medium-Strength Steel

Image of Product. Front orientation. Threaded Rods. Threaded Rods.

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







	9/16"-18

	4"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98750A486	00000


	6"	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98750A487	0000
	1 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A407	00000
	2 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	98957A163	00000
	3 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A125	00000
	6 ft.	125,000	ASTM Grade B7	Rockwell C35	ASTM A193	92580A225	00000

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.

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

	Hardness	Specs. Met		Each
Steel







	9/16"-18

	4"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A268	000000


	6"	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A269	00000
	2 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A271	00000
	3 ft.	150,000	ASTM Grade BD	Rockwell C33	ASTM A354 Grade BD	90322A272	00000

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







	9/16"-18

	2	50,000	Rockwell B61	1	90032A034	000000


	3	50,000	Rockwell B61	1	98842A034	00000
	6	50,000	Rockwell B61	1	98915A034	00000


	Steel







					9/16"-18

					2	50,000	Rockwell B61	1	98791A034	0000


					3	50,000	Rockwell B61	1	98838A034	00000
					6	50,000	Rockwell B61	1	98911A034	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







	9/16"-18

	4"	70,000	Rockwell B70	1	95412A246	00000


	6"	70,000	Rockwell B70	1	95412A347	0000
	1 ft.	70,000	Rockwell B70	1	98804A122	00000
	2 ft.	70,000	Rockwell B70	1	98805A210	00000
	3 ft.	70,000	Rockwell B70	1	98847A271	00000
	6 ft.	70,000	Rockwell B70	1	98920A310	00000

Flanges for Precision Acme Lead Screw Nuts

Thread onto an externally threaded acme nut to create a custom flange nut.

Black-Oxide 1117 Carbon Steel Flange—Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color.

1215 Carbon Steel Flange—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

303 Stainless Steel Flange—303 stainless steel flanges have good corrosion resistance.

	Flange Dia.	Flange Thk.	Bolt Circle Dia.	Flange Hardness		Each
Black-Oxide 1117 Carbon Steel Flange



	9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 135	1329K101	000000


	1215 Carbon Steel Flange



			9/16"-18	1 39/64"	13/32"	1 1/8"	Not Rated	95082A641	00000


			303 Stainless Steel Flange



					9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 140	1329K11	00000

Precision Acme Lead Screws and Nuts

Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. 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, please select components that have the same thread direction, thread size, and number of thread starts.

Externally Threaded Nuts—Right-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.

Combine externally threaded nuts with a flange to create a custom flange nut.

360 Brass—360 brass nuts have excellent machinability and good corrosion resistance.

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

PET—PET plastic nuts are lightweight and corrosion resistant.

PEEK—PEEK plastic nuts handle twice as much heat as PET and acetal plastic nuts. They have good chemical resistance and excellent corrosion resistance.

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
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
360 Brass



		1/4"-20	5/8"	0.688"	Acme	1:1	1	0.05"	9/16"-18	3/8"	Acme Class 2C	Brinell 141	50,000	310	—	95072A171	000000


		673 Bronze



				1/4"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A881	00000


				3/8"-8	5/8"	0.688"	Stub Acme	1:1	1	0.125"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A124	00000
				3/8"-10	5/8"	0.688"	Stub Acme	1:1	1	0.1"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A127	00000
				3/8"-12	5/8"	0.688"	Acme	1:1	1	0.083"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A108	00000
				3/8"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A129	00000


				PET



						1/4"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A210	00000


						1/4"-20	5/8"	0.688"	Acme	1:1	1	0.05"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A340	00000
						3/8"-8	5/8"	0.688"	Acme	1:1	1	0.125"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A224	00000
						3/8"-10	5/8"	0.688"	Acme	1:1	1	0.1"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A227	00000
						3/8"-12	5/8"	0.688"	Acme	1:1	1	0.083"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A104	00000
						3/8"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A229	00000


						PEEK



								1/4"-20	5/8"	0.688"	Acme	1:1	1	0.05"	9/16"-18	3/8"	Acme Class 2C	Not Rated	16,000	150	-40 to 525	90493A150	000000

Externally Threaded Nuts—Left-Hand Thread

Combine externally threaded nuts with a flange to create a custom flange nut.

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap.		Each
673 Bronze



		1/4"-16	5/8"	0.688"	Acme	1:1	1	0.063"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A882	000000


		3/8"-12	5/8"	0.688"	Acme	1:1	1	0.083"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A208	00000

Flanges

Image of Attribute. Front orientation. Contains Annotated.

Thread onto an externally threaded acme nut to create a custom flange nut.

Black-Oxide 1117 Carbon Steel—Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color.

1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.

	Flange Dia.	Flange Thk.	Bolt Circle Dia.	Flange Hardness		Each
Black-Oxide 1117 Carbon Steel



	9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 135	1329K101	000000


	1215 Carbon Steel



			9/16"-18	1 39/64"	13/32"	1 1/8"	Not Rated	95082A641	00000


			303 Stainless Steel



					9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 140	1329K11	00000

Fast-Travel Precision Acme Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. The threads have a tight thread fit for accurate, repeatable starts and stops. Pair with a motor in automated motion and positioning applications. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.

Externally Threaded Nuts—Right-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Fast-Travel Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.

Combine externally threaded nuts with a flange to create a custom flange nut.

360 Brass—360 brass nuts have excellent machinability and good corrosion resistance.

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

PET—PET plastic nuts are lightweight and corrosion resistant.

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
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap., lb.	Temp., ° F		Each
360 Brass



		1/4"-16	5/8"	0.688"	Acme	4:1	4	0.25"	9/16"-18	3/8"	Acme Class 2C	Brinell 130	Not Rated	300	—	95072A430	000000


		673 Bronze



				1/4"-12	5/8"	0.688"	Stub Acme	4:1	4	0.333"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A107	00000


				3/8"-8	5/8"	0.688"	Stub Acme	2:1	2	0.25"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A126	00000
				3/8"-8	5/8"	0.688"	Stub Acme	4:1	4	0.5"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A125	00000
				3/8"-10	5/8"	0.688"	Stub Acme	2:1	2	0.2"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A128	00000
				3/8"-12	5/8"	0.688"	Acme	2:1	2	0.167"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	—	95072A771	00000


				PET



						1/4"-12	5/8"	0.688"	Acme	4:1	4	0.333"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	160	15 to 175	95075A207	00000


						3/8"-5	5/8"	0.688"	Acme	5:1	5	1"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	250	15 to 175	95075A101	00000
						3/8"-8	5/8"	0.688"	Acme	2:1	2	0.25"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A226	00000
						3/8"-8	5/8"	0.688"	Acme	4:1	4	0.5"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A225	00000
						3/8"-10	5/8"	0.688"	Acme	2:1	2	0.2"	9/16"-18	3/8"	Acme Class 2C	Not Rated	Not Rated	350	15 to 175	95075A228	00000

Externally Threaded Nuts—Left-Hand Thread

Combine externally threaded nuts with a flange to create a custom flange nut.

673 Bronze—932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

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
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Tensile Strength	Dynamic Thrust Load Cap.		Each
673 Bronze



		3/8"-12	5/8"	0.688"	Acme	2:1	2	0.167"	9/16"-18	3/8"	Acme Class 2C	Brinell 70	Not Rated	Not Rated	95072A772	000000

Flanges

Thread onto an externally threaded acme nut to create a custom flange nut.

1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.

303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.

	Flange Dia.	Flange Thk.	Bolt Circle Dia.	Flange Hardness		Each
1215 Carbon Steel



	9/16"-18	1 39/64"	13/32"	1 1/8"	Not Rated	95082A641	000000


	303 Stainless Steel



			9/16"-18	1 39/64"	13/32"	1 1/8"	Brinell 140	1329K11	00000

Metric Precision Lead Screws and Nuts

Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. 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 direction, size, and number of thread starts.

Externally Threaded Nuts—Right-Hand Thread

Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Metric Precision Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.

Manganese Bronze—Manganese bronze nuts have good strength and wear resistance.

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
	Thread Size	Lg.	Dia.	Thread Type	Speed Ratio	No. of Thread Starts	Travel Distance per Turn, mm	Size	Lg.	Thread Fit	Hardness	Tensile Strength, psi	Dynamic Thrust Load Cap., lb.	Specs. Met		Each
Manganese Bronze



		M10 × 2 mm	5/8"	0.68"	Metric Trapezoidal	1:1	1	2	9/16"-18	3/8"	Metric Trapezoidal Class 7H	Brinell 126	75,000	670	DIN 103	7549K88	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



		9/16"-18	2 1/8"	13/16"	Fully Threaded	90264A520	00000	00000	00000

Corrosion-Resistant Stainless Steel

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

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



		9/16"-18	2 1/8"	13/16"	Fully Threaded	—	90268A102	000000	000000	000000


		9/16"-18	4"	7/8"	Partially Threaded	3/4"	90268A435	00000	00000	00000
		9/16"-18	6"	7/8"	Partially Threaded	3/4"	90268A437	00000	00000	00000

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



		9/16"-18	2 1/8"	13/16"	Fully Threaded	90465A324	000000	000000	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



	9/16"-18	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K565	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



		9/16"-18	1/4	06	04	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	50925K541	000000


		9/16"-18	3/8	06	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	50925K542	00000
		9/16"-18	1/2	06	08	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	50925K544	00000

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



		1/8	—	—	9/16"-18	02	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K533	000000


		1/4	—	—	9/16"-18	04	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K451	0000
		3/8	—	—	9/16"-18	06	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K187	0000
		1/2	—	—	9/16"-18	08	06	Hex	Zinc-Plated Steel	5,000 psi @ 72° F	Buna-N	50925K534	00000


		NPTF Male × UN/UNF (SAE Straight) Male



				1/4	—	—	9/16"-18	04	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K328	0000


				3/8	—	—	9/16"-18	06	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K329	0000


				UN/UNF (SAE Straight) Female × BSPP Male



						—	1/4	9/16"-18	—	06	04	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	4936K963	00000


						—	3/8	9/16"-18	—	06	06	Hex	Zinc-Plated Steel	5,500 psi @ 72° F	Buna-N	4936K965	00000


						UN/UNF (SAE Straight) Male × BSPP Male



								—	1/4	9/16"-18	—	06	04	Hex	Zinc-Plated Steel	5,500 psi @ 72° F	Buna-N	4936K165	0000


								—	3/8	9/16"-18	—	06	06	Hex	Zinc-Plated Steel	5,500 psi @ 72° F	Buna-N	4936K166	0000
								—	1/2	9/16"-18	—	06	08	Hex	Zinc-Plated Steel	5,500 psi @ 72° F	Buna-N	4936K764	00000

Straight Reducing Adapters with Gasket

Female x 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.

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



		7/16"-20	9/16"-18	04	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K578	00000


		9/16"-18	3/4"-16	06	08	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K582	0000
		3/4"-16	9/16"-18	08	06	Hex	Zinc-Plated Steel	6,000 psi @ 72° F	Buna-N	50925K579	0000

Replacement Washers

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



	1/4	11.45	20.57	2.03	4936K662	00000


	3/8	14.96	23.8	2	4936K633	0000
	1/2	18.64	28.58	2.5	4936K634	0000

Miniature Low-Pressure Aluminum Threaded Pipe Fittings

Their small size makes these miniature fittings a good choice for cramped, confined spaces. They are designed to handle low-pressure applications. Fittings are aluminum, which is lightweight with good corrosion resistance.

Straight Adapters

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

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



	9/16"-18	1/8	Hex	6061 Aluminum	150 psi @ 72° F	1859N107	000000


	9/16"-18	1/4	Hex	6061 Aluminum	150 psi @ 72° F	1859N112	00000

Straight Adapters with Gasket

Male, Threaded

Fitting

Connection,

Threaded Fitting

Connection,

Male, Hex Body

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

Fluoroelastomer—These gaskets resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol.

	Thread Size (B)	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
NPT Male × UN/UNF (SAE Straight) Male



	1/4	9/16"-18	Hex	6061 Aluminum	150 psi @ 72° F	Fluoroelastomer	1859N169	000000

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



		9/16"-18	06	Hex	7,200 psi @ 72° F	7,200 psi @ 200° F	51205K561	000000

Straight Adapters


Female x Female	Female x Male

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

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



		1/4	—	—	9/16"-18	04	06	Hex	15,000 psi @ 72° F	51205K721	000000


		3/8	—	—	9/16"-18	06	06	Hex	15,000 psi @ 72° F	51205K722	000000
		1/2	—	—	9/16"-18	08	06	Hex	15,000 psi @ 72° F	51205K723	000000


		UN/UNF (SAE Straight) Female × NPT Male



				—	1/4	9/16"-18	—	06	04	Hex	15,000 psi @ 72° F	51205K711	00000


				—	3/8	9/16"-18	—	06	06	Hex	15,000 psi @ 72° F	51205K712	00000
				—	1/2	9/16"-18	—	06	08	Hex	15,000 psi @ 72° F	51205K713	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.

Fluoroelastomer—These gaskets resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol.

	Pipe Size		Thread Size		Dash Size				316 Stainless Steel
	(A)	(B)	(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	—	—	9/16"-18	04	06	Hex	Fluoroelastomer	6,000 psi @ 72° F	—	51205K266	000000


		3/8	—	—	9/16"-18	06	06	Hex	Fluoroelastomer	6,000 psi @ 72° F	—	51205K267	000000
		1/2	—	—	9/16"-18	08	06	Hex	Buna-N	7,200 psi @ 72° F	7,200 psi @ 200° F	51205K548	00000


		NPTF Male × UN/UNF (SAE Straight) Male



				1/4	—	—	9/16"-18	04	06	Hex	Fluoroelastomer	6,000 psi @ 72° F	—	51205K256	000000


				3/8	—	—	9/16"-18	06	06	Hex	Fluoroelastomer	6,000 psi @ 72° F	—	51205K257	00000


				BSPP Female × UN/UNF (SAE Straight) Male



						1/4	—	—	9/16"-18	04	06	Hex	Buna-N	6,000 psi @ 72° F	—	51205K772	00000


						UN/UNF (SAE Straight) Female × UN/UNF (SAE Straight) Male



								—	—	9/16"-18	9/16"-18	06	06	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K531	00000


								UN/UNF (SAE Straight) Female × Metric Male



										—	—	9/16"-18	M14 × 1.5 mm	06	—	Hex	Buna-N	5,000 psi @ 72° F	—	51205K783	00000


										UN/UNF (SAE Straight) Male × BSPP Male



												—	1/4	9/16"-18	—	06	04	Hex	Buna-N	5,000 psi @ 72° F	—	4822T187	00000


												—	3/8	9/16"-18	—	06	06	Hex	Buna-N	5,000 psi @ 72° F	—	4822T188	00000


												Metric Female × UN/UNF (SAE Straight) Male



														—	—	M14 × 1.5 mm	9/16"-18	—	06	Hex	Buna-N	6,000 psi @ 72° F	—	51205K763	00000

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	9/16"-18	04	06	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K529	000000


		9/16"-18	7/16"-20	06	04	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K528	00000
		9/16"-18	3/4"-16	06	08	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K534	00000
		9/16"-18	7/8"-14	06	10	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K537	00000
		9/16"-18	1 1/16"-12	06	12	Hex	Buna-N	5,400 psi @ 72° F	5,400 psi @ 200° F	51205K542	00000
		3/4"-16	9/16"-18	08	06	Hex	Buna-N	4,800 psi @ 72° F	4,800 psi @ 200° F	51205K532	00000

Replacement Washers

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



	1/4	11.45	20.57	2.03	4822T402	00000


	3/8	14.96	23.8	2	4822T403	0000

Locknuts

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



		1/4	04	PTFE	10,000 psi @ 72° F	5530K38	000000


		3/8	06	PTFE	10,000 psi @ 72° F	5530K39	00000
		1/2	08	PTFE	10,000 psi @ 72° F	5530K44	00000

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

When space is at a premium choose these compact fittings. Though small in size, they have the strength to handle medium-pressure applications. Fittings are stainless steel for very good corrosion resistance.

Straight Adapters

Female x Male

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

303 Stainless Steel—Fittings have very good corrosion resistance.

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



		9/16"-18	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K436	000000


		9/16"-18	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K442	00000

Straight Adapters with Gasket


Female x Male	Male x Male

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

303 Stainless Steel—Fittings have very good corrosion resistance.

Fluoroelastomer—These gaskets resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol.

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



		1/8	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K131	000000


		1/4	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K236	00000


		NPT Male × UN/UNF (SAE Straight) Male



				1/8	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K875	00000


				1/4	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K991	00000