7/8"-14 Nipples | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size	Show

7/8"-14

	Thread Size Thread Size	Hide

	Thread Type Thread Type

UN/UNF (SAE Straight)

UNJ/UNJF (JIC)

	Pipe Size Pipe Size

	Dash Size Dash Size

	Type Type


Adapter	Connector

	Shape Shape

	Straight

	Material Material

	Connection Style Connection Style

Threaded

Barbed

Flared

	Gender Gender

Male

Female

	For Use With For Use With

	For Tube OD For Tube OD

5/8"

3/4"

	For Tube Material For Tube Material

	Connection Type Connection Type


Pipe	Hose

Tube

	Length Length

	Maximum Pressure Maximum Pressure

	Specifications Met Specifications Met

	Flared Angle Flared Angle

37°

45°

	Flared Connection Type Flared Connection Type


Standard	Internal

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Gasket Material Gasket Material

Buna-N Rubber

Fluoroelastomer Rubber

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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40 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

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. 316 stainless steel fittings have excellent corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads. BSPP and metric male threads have either a gasket or a gasket and washer to prevent leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the male threads have a gasket to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Male

Front

BSPP and Metric
Male Threads with
Gasket and Washer

UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: See table
Specifications Met: See table

										316 Stainless Steel
Pipe Size (A)	Thread Size (A)	Dash Size (A)	Pipe Size (B)	Thread Size (B)	Dash Size (B)	Max. Pressure	Max. Steam Pressure	For Use With	Specifications Met		Each
NPTF Male × UN/UNF (SAE Straight) Male
1/2	__	08	__	7/8"-14	10	5,400 psi @ 72° F	5,400 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	000000
UN/UNF (SAE Straight) Male × BSPP Male
__	7/8"-14	10	1/2	__	08	3,500 psi @ 72° F	__	Hydraulic Fluid, Oil, Water	ISO 1179, ISO 8434-6, SAE J1926	00000000	00000

Replacement Washers

Temperature Range: -22° to 230° F

		316 Stainless Steel
For Pipe Size	Gasket Material	Thickness		Each
For BSPP Male
1/2	Buna-N Rubber	2.5mm	00000000	00000

Compact Extreme-Pressure Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the male threads have either a gasket or a gasket and washer to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Connectors, Male

UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: See table
Specifications Met:
NPTF and UN/UNF (SAE Straight): ASTM A108
BSPP: ISO 1179, ISO 8434-6
BSPT: DIN EN 10226-1, ISO 7-1

UN/UNF (SAE Straight) Male
Thread Size	Dash Size	Max. Pressure	For Use With		Each
7/8"-14	10	5,000 psi @ 72° F	Air, Hydraulic Fluid, Water	000000000	000000

Straight Adapters, Male

UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: See table
Specifications Met: See table

NPTF Male × UN/UNF (SAE Straight) Male
Pipe Size (A)	Dash Size (A)	Thread Size (B)	Dash Size (B)	Max. Pressure	For Use With	Specifications Met		Each
1/2	08	7/8"-14	10	6,000 psi @ 72° F	Air, Hydraulic Fluid, Water	ASTM A108	000000000	00000

Metal Push-On Barbed Hose Fittings for Air and Water

Fittings have sharper barbs than standard barbed hose fittings to grip rubber push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip.

Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance, so they’re the best choice for high-humidity environments.

Fittings that swivel until tightened rotate 360° for easy installation.

Fittings with a flared end meet JIC or SAE standards for dimensions. Fittings with a 37° flared end are also known as JIC (Joint Industrial Council) fittings. Fittings with a female 37° and 45° flared end have a dual-angle seat that accepts both 37° and 45° flared fittings.

The optional installation tool (sold separately) allows you to connect large quantities of barbed fittings to push-on hose. Use the built-in cutter to squarely cut the hose without fraying. Next, lubricate either the push-on hose, fitting or both. Then, clamp the hose into the tool’s vise and apply light pressure on the handle to drive into the fitting.

Note: To ensure proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.

For technical drawings and 3-D models, click on a part number.

Straight Adapters (Swivels Until Tightened), Hose × UN/UNF (Tube End) Female 37° Flared Tube

Maximum Pressure: 300 psi @ 72° F
Temperature Range: -20° to 150° F
Specifications Met: SAE J514

Adapters
			Ring Stop					Replacement Ring Stops
For Hose ID	For Tube OD	Thread Size	Material	Color	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
316 Stainless Steel
5/8"	5/8"	7/8"-14	Plastic	Blue	1	00000000	0000000	25	00000000	00000

Straight Adapters, Hose × UN/UNF (Tube End) Female 37° and 45° Flared Tube

Maximum Pressure: 300 psi @ 72° F
Temperature Range: -20° to 150° F
Specifications Met: SAE J512, SAE J514

Adapters
			Ring Stop					Replacement Ring Stops
For Hose ID	For Tube OD	Thread Size	Material	Color	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Brass
1/2"	5/8"	7/8"-14	Plastic	Yellow	2	00000000	000000	25	00000000	00000
5/8"	5/8"	7/8"-14	Plastic	Yellow	2	00000000	00000	25	00000000	0000

Installation Tool

				Mounting Hole
For Hose ID Range	Lg.	Ht.	Dp.	Dia.	No. of	Mounting Fasteners Included		Each
1/4" to 3/4"	13 1/2"	7"	2 3/8"	7/16"	4	No	00000000	0000000

45° Flared Fittings for Copper and Brass Tubing

Temperature Range: -65° to 250° F
Tubing: Use with seamless brass and copper that meets ASTM B280

No sleeve is required to assemble these fittings, which makes for a faster, more convenient installation compared to 37° flared fittings. They require a nut (sold separately) for each tube end. Fittings are also known as refrigeration and SAE fittings. They are brass for good corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads.

Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Use With:
NPTF Threads: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except adapters for 1/8" and 1" tube OD are not for use with fuel oil
BSPT Threads: Air, Cutting Oil, Diesel Fuel, Mineral Oil, Refrigerant, Water
Specifications Met: See table

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Specifications Met		Each
NPTF Threads
5/8"	0.035"	1/4	Brass	650 psi @ 72° F	SAE J512, SAE J513, UL Listed	000000000	000000
5/8"	0.035"	3/8	Brass	650 psi @ 72° F	SAE J512, SAE J513, UL Listed	000000000	00000
5/8"	0.035"	1/2	Brass	650 psi @ 72° F	SAE J512, SAE J513, UL Listed	000000000	00000
5/8"	0.035"	3/4	Brass	650 psi @ 72° F	SAE J512, SAE J513, UL Listed	000000000	00000

Nuts

(A) Short Nut

(B) Short Nut

(A) Long Nut

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except nuts for 1" tube OD are not for use with fuel oil
Specifications Met: SAE J512, SAE J513, UL Listed; except nuts for 1" tube OD meet SAE J512 and SAE J513 only

	For Tube
	OD	Wall Thick.	Nut Material	Max. Pressure	Lg.		Each
Short Nuts
A	5/8"	0.035"	Brass	650 psi @ 72° F	1 1/16"	000000000	000000
A	5/8"	0.095"	Brass	650 psi @ 72° F	1 5/16"	000000000	00000
B	5/8"	0.035"	Brass	650 psi @ 72° F	31/32"	000000000	00000
Long Nuts
A	5/8"	0.095"	Brass	650 psi @ 72° F	1 7/8"	000000000	00000

37° Flared Fittings for Copper Tubing

For Use With: Air, Fuel Oil, Mineral Oil, Water
Temperature Range: -40° to 400° F
Tubing: Use with seamless copper
Specifications Met: ISO 8434, MIL-F-18866, SAE J514

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They can handle higher pressures than 45° flared fittings. Fittings are brass for good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

NPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
5/8"	1/2	360 Brass	3,300 psi @ 72° F	00000000	000000

Nuts

For Tube OD	Nut Material		Each
5/8"	360 Brass	000000000	00000

Sleeves

For Tube OD	Sleeve Material		Each
5/8"	360 Brass	000000000	00000

37° Flared Fittings for Stainless Steel Tubing

Tubing: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Specifications Met: ISO 8434, SAE J514, except fittings with BSPP and BSPT threads meet SAE J514 only

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They are 316 stainless steel for excellent corrosion resistance. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

BSPP threads and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Use With: See table
Temperature Range: See table

NPT Threads
For Tube OD	Pipe Size	Thread Size	For Use With	Material	Gasket Material	Max. Pressure	Temp. Range, ° F		Each
5/8"	1/2	__	Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water	316 Stainless Steel	__	6,000 psi @ 72° F	-420 to 1200°	000000000	000000
UN/UNF (SAE Straight) Threads
5/8"	__	7/8"-14	Air, Hydraulic Fluid, Isopropyl Alcohol, Water	316 Stainless Steel	Fluoroelastomer Rubber	6,000 psi @ 72° F	-15 to 400°	000000000	00000
3/4"	__	7/8"-14	Air, Hydraulic Fluid, Isopropyl Alcohol, Water	316 Stainless Steel	Fluoroelastomer Rubber	6,000 psi @ 72° F	-15 to 400°	000000000	000000

Nuts

For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
Temperature Range: -420° to 1,200° F

For Tube OD	Nut Material		Each
5/8"	316 Stainless Steel	000000000	000000

Sleeves

For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
Temperature Range: -420° to 1,200° F

Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.

For Tube OD
Inch	Sleeve Material		Each
Inch
5/8"	316 Stainless Steel	000000000	00000

37° Flared Fittings for Steel Tubing

BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket

Tubing: Use with seamless steel
Specifications Met: SAE J514

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for fair corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads.

To prevent leaks, UN/UNF (SAE Straight) male threads have a gasket. Metric and BSPP male threads have either a gasket or a gasket and washer.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Male Tube × Male Threaded Pipe

BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: See Table
Temperature Range: See Table

NPTF Threads
For Tube OD	Pipe Size	Thread Size	Thread Pitch, mm	For Use With	Material	Gasket Material	Max. Pressure	Temp. Range, °F		Each
5/8"	1/2	__	__	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	__	3,000 psi @ 72° F	-60° to 400°	000000000	00000
Metric Threads
5/8"	__	M18	1.5	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	-30° to 200°	00000000	00000
5/8"	__	M20	1.5	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	-30° to 200°	00000000	00000
5/8"	__	M22	1.5	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	-30° to 200°	00000000	00000
BSPP Threads
5/8"	3/8	__	__	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	4,000 psi @ 72° F	-30° to 200°	00000000	00000
5/8"	1/2	__	__	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	4,000 psi @ 72° F	-30° to 200°	00000000	00000

Nuts

For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: -60° to 400° F

For Tube OD	Nut Material	Max. Pressure		Each
5/8"	Zinc-Plated Steel	3,000 psi @ 72° F	000000000	00000

Sleeves

For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: -60° to 400° F

Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.

Inch × metric sleeve adapters convert the fitting from inch to metric.

For Tube OD
Inch	Metric, mm	Sleeve Material	Max. Pressure		Each
Inch Sleeves
5/8"	__	Zinc-Plated Steel	3,000 psi @ 72° F	000000000	00000
Inch × Metric Sleeve Adapters
5/8"	14	Zinc-Plated Steel	3,000 psi @ 72° F	000000000	0000
5/8"	16	Zinc-Plated Steel	3,000 psi @ 72° F	000000000	0000

37° Flared Fittings for Aluminum Tubing

For Use With: Air, Coolant, Gasoline, Hydraulic Fluid, Water
Temperature Range: -60° to 400° F
Tubing: Use with seamless aluminum

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are aluminum, which is lightweight with good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

NPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
5/8"	1/2	Anodized 2024 Aluminum	3,000 psi @ 72° F	0000000	00000

Nuts

For Tube OD	Nut Material	Max. Pressure		Each
5/8"	Anodized 2024 Aluminum	3,000 psi @ 72° F	0000000	00000

Sleeves

For Tube OD	Sleeve Material	Max. Pressure		Each
5/8"	Anodized 2024 Aluminum	3,000 psi @ 72° F	0000000	00000