1 1/16"-12 Reducers | McMaster-Carr

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	Type Type

	Adapter
	Reducer
	Reducing Adapter

	Thread Type Thread Type

NPT

UN/UNF (JIC)

UN/UNF (SAE Straight)

UNF

UNJ/UNJF (JIC)

	Pipe Size Pipe Size

3/4

	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

1 1/16"-12

	Thread Size Thread Size	Hide

	Dash Size Dash Size

	Shape Shape


Straight	Manifold

	Material Material

Aluminum

Stainless Steel

Steel

	Gender Gender

Female

Male

	For Use With For Use With

	Connection Style Connection Style

Threaded

Flared

	Maximum Pressure Maximum Pressure

	Body Shape Body Shape

	Hex

	Specifications Met Specifications Met

	Connection Type Connection Type


Pipe	Tube

	Length Length

	Maximum Steam Pressure Maximum Steam Pressure

	Hex Width Hex Width

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

REACH Compliant

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

DFARS Specialty Metals
COTS-Exempt

	Fabrication Fabrication

Machined

	Gasket Material Gasket Material

Fluoroelastomer Rubber

Buna-N Rubber

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54 Products

How to Measure Threaded Pipe Size

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.

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines. They are 316 stainless steel for excellent corrosion resistance. 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

Straight Adapter, Male Threaded Pipe

UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With:
NPT × BSPP: Natural Gas, Water
NPT × BSPT and UN/UNF (SAE Straight) Male × NPT Male: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
Specifications Met:
NPT × BSPP: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A276, ASTM A479, ISO 228.1, ISO 228.2, ISO BS 2779
NPT × BSPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 7.1, ISO BS2.1
UN/UNF (SAE Straight) Male × NPT Male: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479, SAE J1926

UN/UNF (SAE Straight) Male × NPT Male
Thread Size	Dash Size	Max. Pressure	Max. Steam Pressure		Each
1 1/16"-12	12	3,600 psi @ 72° F	3,600 psi @ 300° F	000000000	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. 316 stainless steel fittings have excellent corrosion resistance. 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 Reducing Adapters, Female × Male

UN/UNF
(SAE Straight) Male
Threads with Gasket

Specifications Met: See table
For Use With: See table

Thread Size		Dash Size						316 Stainless Steel
(A)	(B)	(A)	(B)	Max. Pressure	Max. Steam Pressure	For Use With	Specifications Met		Each
UN/UNF (SAE Straight) Female × UN/UNF (SAE Straight) Male
7/16"-20	1 1/16"-12	04	12	5,400 psi @ 72° F	5,400 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	000000
9/16"-18	1 1/16"-12	06	12	5,400 psi @ 72° F	5,400 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	00000
3/4"-16	1 1/16"-12	08	12	5,400 psi @ 72° F	5,400 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	00000
7/8"-14	1 1/16"-12	10	12	3,600 psi @ 72° F	3,600 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	00000
1 5/16"-12	1 1/16"-12	16	12	2,400 psi @ 72° F	2,400 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	00000
1 1/16"-12	7/8"-14	12	10	4,200 psi @ 72° F	4,200 psi @ 200° F	Hydraulic Fluid, Oil, Steam, Water	SAE J514	000000000	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. 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 Reducing Adapters, Female × Male

UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: See table
Specifications Met: See table

Thread Size		Dash Size
(A)	(B)	(A)	(B)	Max. Pressure	For Use With	Specifications Met		Each
UN/UNF (SAE Straight) Female × UN/UNF (SAE Straight) Male
3/4"-16	1 1/16"-12	08	12	5,000 psi @ 72° F	Air, Hydraulic Fluid, Water	ASTM A108	000000000	00000
1 1/16"-12	1 5/16"-12	12	16	4,500 psi @ 72° F	Air, Hydraulic Fluid, Water	ASTM A108	000000000	00000
1 1/16"-12	1 5/8"-12	12	20	4,000 psi @ 72° F	Air, Hydraulic Fluid, Water	ASTM A108	000000000	00000
1 1/16"-12	1 7/8"-12	12	24	3,000 psi @ 72° F	Air, Hydraulic Fluid, Water	ASTM A108	000000000	00000

Straight-Flow Rectangular Manifolds

Unlike other manifolds, which have an inlet on either end, these have one inlet on the opposite side from the outlets. This design allows fluid or air to follow a straight path, improving flow through your system. It also frees up the ends of the manifold, so you can mount it in corners and in narrow spaces. Manifolds are also known as headers. They have mounting holes, so you can mount from the top or side.

Anodized aluminum manifolds are the industry standard for the most common types of applications. They are lighter in weight than other metal manifolds and have good corrosion resistance. These manifolds are anodized for a black finish.

Use a plug (sold separately) to close off any unused inlets and outlets.

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

Anodized Aluminum—UNF Inlets × UNF Outlets

For Use With: Air, Water, Hydraulic Fluid
Temperature Range: -10° to 200° F
Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 1,000 psi @ 72° F
Hydraulic Fluid: 3,000 psi @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Dash Size	Thread Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.	Color		Each
Standard Outlet Spacing
2	1 1/16"-12	12	3/4"-16	8	4"	2"	2"	1 1/2"	Black	00000000	000000
3	1 1/16"-12	12	3/4"-16	8	5 1/2"	2"	2"	1 1/2"	Black	00000000	00000
3	1 5/16"-12	16	1 1/16"-12	12	7"	2 1/2"	2 1/2"	2"	Black	00000000	000000
4	1 1/16"-12	12	3/4"-16	8	7"	2"	2"	1 1/2"	Black	00000000	00000
6	1 5/16"-12	16	1 1/16"-12	12	13"	2 1/2"	2 1/2"	2"	Black	00000000	000000

Plugs

Aluminum—UNF
Thread Size	Drive	Pressure Class	Max. Pressure		Each
3/4"-16	External Hex	150	150 psi @ 72° F	00000000	00000

Low-Profile Hex Manifolds

When you’re short on vertical space, these manifolds are a good fit—they have outlets on the side instead of on top, so they have a lower profile than rectangular manifolds. Use them to distribute air, water, or hydraulic fluid to five locations from a single supply source. Manifolds have mounting holes, so you can mount from the top.

316 stainless steel manifolds have excellent corrosion resistance and can handle fuel, gasoline, coolant and other harsh substances.

Use a plug (sold separately) to close off any unused inlets and outlets.

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

Anodized Aluminum—UN/UNF (SAE Straight) Inlets × UN/UNF (SAE Straight) Outlets

For Use With: Air, Water, Hydraulic Fluid
Temperature Range: -10° to 200° F
Maximum Pressure: 1,000 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Dash Size	Thread Size	Dash Size	Wd.	Ht.	Outlet Spacing	Color		Each
5	1 1/16"-12	12	3/4"-16	8	3"	1 1/4"	Standard	Black	00000000	000000
5	1 5/16"-12	16	1 1/16"-12	12	2 1/2"	1 1/2"	Standard	Black	00000000	000000

316 Stainless Steel—UN/UNF (SAE Straight) Inlets × UN/UNF (SAE Straight) Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Dash Size	Thread Size	Dash Size	Wd.	Ht.	Outlet Spacing		Each
5	1 1/16"-12	12	3/4"-16	8	3"	1 1/4"	Standard	00000000	0000000
5	1 5/16"-12	16	1 1/16"-12	12	2 1/2"	1 1/2"	Standard	00000000	000000

Plugs

		External Hex Drive
Thread Size	Max. Pressure	Pressure Class		Each
Aluminum—UNF
3/4"-16	150 psi @ 72° F	150	00000000	00000

Low-Profile Square Manifolds

Aluminum

With outlets on the side instead of on top, these manifolds have a lower profile than rectangular manifolds and fit well in cramped spaces. Use them to distribute air, water, or hydraulic fluid to three locations from a single supply source. Manifolds have mounting holes, so you can mount from the top.

Use a plug (sold separately) to close off any unused inlets and outlets.

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

Anodized Aluminum—UN/UNF (SAE Straight) Inlets × UN/UNF (SAE Straight) Outlets

For Use With: Air, Water, Hydraulic Fluid
Temperature Range: -10° to 200° F
Maximum Pressure: 1,000 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Dash Size	Thread Size	Dash Size	Lg.	Wd.	Ht.	Color		Each
3	1 1/16"-12	12	3/4"-16	08	2 1/2"	2 1/2"	1 1/4"	Black	0000000	000000
3	1 5/16"-12	16	1 1/16"-12	12	2 3/4"	2 3/4"	1 1/2"	Black	0000000	000000

Medium-Pressure Aluminum Threaded Pipe Fittings, Plugs

Aluminum—UNF
Thread Size	Drive	Length	Max. Pressure		Each
3/4"-16	External Hex	29/32"	150 psi @ 72° F	00000000	00000

Precision AN 37° Flared Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: -320° to 1200° F
Tubing: Use with seamless 304 or 316 stainless steel
Specifications Met: See Table

The threads on the tube end of these fittings are Class 3A or 3B and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

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

Straight Reducers, Tube

				304 Stainless Steel		316 Stainless Steel
For Tube OD (A)	For Tube OD (B)	Max. Pressure	Specifications Met		Each		Each
3/4"	1/2"	3,000 psi @ 72° F	AN919-19J, ASTM A380, SAE AS4841	00000000	000000	000000	00
3/4"	1/2"	3,000 psi @ 72° F	AN919-19K, ASTM A380, SAE AS4841	000000	00	00000000	000000
1"	3/4"	3,000 psi @ 72° F	AN919-23J, ASTM A380, SAE AS4841	00000000	00000	000000	00
1"	3/4"	3,000 psi @ 72° F	AN919-23K, ASTM A380, SAE AS4841	000000	00	00000000	00000

Straight Reducing Adapters, Female Tube × Tube

Fittings with female tube end have an internal flare that mates with the male tube end of another fitting.

304 Stainless Steel
For Tube OD (A)	For Tube OD (B)	Max. Pressure	Specifications Met		Each
1"	3/4"	3,000 psi @ 72° F	ASTM A380, NAS1564J8-4, SAE AS4841, SAE AS9100D, SAE AS9104/1	00000000	000000
316 Stainless Steel
1"	3/4"	3,000 psi @ 72° F	ASTM A380, NAS1564K8-4, SAE AS4841, SAE AS9100D, SAE AS9104/1	00000000	00000

Nuts

			304 Stainless Steel		316 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each		Each
1/2"	3,000 psi @ 72° F	AN818-8J, ASTM A380, SAE AS4841	0000000	00000	000000	00
1/2"	3,000 psi @ 72° F	AN818-8K, ASTM A380, SAE AS4841	000000	00	00000000	00000
3/4"	3,000 psi @ 72° F	AN818-12J, ASTM A380, SAE AS4841	0000000	00000	000000	00
3/4"	3,000 psi @ 72° F	AN818-12K, ASTM A380, SAE AS4841	000000	00	00000000	00000
1"	3,000 psi @ 72° F	AN818-16J, ASTM A380, SAE AS4841	00000000	00000	000000	00
1"	3,000 psi @ 72° F	AN818-16K, ASTM A380, SAE AS4841	000000	00	00000000	00000

Sleeves

			304 Stainless Steel		316 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each		Each
1/2"	3,000 psi @ 72° F	AN819-8J, ASTM A380, MS20819, SAE AS4841	0000000	00000	000000	00
1/2"	3,000 psi @ 72° F	AN819-8K, ASTM A380, MS20819, SAE AS4841	000000	00	00000000	00000
3/4"	3,000 psi @ 72° F	AN819-12J, ASTM A380, MS20819, SAE AS4841	0000000	0000	000000	00
3/4"	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841	000000	00	00000000	0000
1"	3,000 psi @ 72° F	AN819-16J, ASTM A380, MS20819, SAE AS4841	00000000	00000	000000	00
1"	3,000 psi @ 72° F	AN819-16K, ASTM A380, MS20819, SAE AS4841	000000	00	00000000	00000

Vibration-Resistant Precision AN 37° Flared Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: -320° to 500° F
Tubing: Use with seamless 304 or 316 stainless steel
Specifications Met: See Table

A PTFE seal on the tube end of these fittings allows for an extra-strong connection in high-vibration applications. The threads on the tube end are Class 3A and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are 316 stainless steel for excellent 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 Reducers, Tube

PTFE Seal

For Tube OD (A)	For Tube OD (B)	Material	Max. Pressure	Specifications Met		Each
3/4"	1/2"	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9100D, SAE AS9104/1	00000000	000000

Nuts

For Tube OD	Nut Material	Max. Pressure	Specifications Met		Each
1/2"	316 Stainless Steel	3,000 psi @ 72° F	AN818-8K, ASTM A380, SAE AS4841	00000000	00000
3/4"	316 Stainless Steel	3,000 psi @ 72° F	AN818-12K, ASTM A380, SAE AS4841	00000000	00000

Sleeves

For Tube OD	Sleeve Material	Max. Pressure	Specifications Met		Each
1/2"	316 Stainless Steel	3,000 psi @ 72° F	AN819-8K, ASTM A380, MS20819, SAE AS4841	00000000	00000
3/4"	316 Stainless Steel	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841	00000000	0000

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.

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

Straight Reducers, Tube

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

For Tube OD (A)	For Tube OD (B)	Material	Max. Pressure		Each
3/4"	1/2"	316 Stainless Steel	6,000 psi @ 72° F	000000000	000000

Straight Reducing Adapters, Female Tube × Tube

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

Fittings with female tube end have an internal flare that mates with the male tube end of another fitting.

For Tube OD (A)	For Tube OD (B)	Material	Max. Pressure		Each
3/4"	1/4"	316 Stainless Steel	6,000 psi @ 72° F	000000000	000000
3/4"	1/2"	316 Stainless Steel	6,000 psi @ 72° F	000000000	00000
1"	3/4"	316 Stainless Steel	4,500 psi @ 72° F	000000000	00000

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
1/4"	316 Stainless Steel	000000000	00000
1/2"	316 Stainless Steel	000000000	0000
3/4"	316 Stainless Steel	000000000	00000
1"	316 Stainless Steel	000000000	00000

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.

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

For Tube OD
Inch	Metric, mm	Sleeve Material		Each
Inch
3/4"	__	316 Stainless Steel	000000000	000000
1"	__	316 Stainless Steel	000000000	00000
Inch × Metric
1/4"	6	316 Stainless Steel	000000000	00000
1/2"	12	316 Stainless Steel	000000000	00000