King Nipples | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Hose ID For Hose ID

	Pipe Size Pipe Size

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8

	Thread Type Thread Type

UN/UNF (SAE Straight)

NPSH

	Material Material

	Shape Shape

	Straight
	90° Elbow
	45° Elbow

	Type Type


Adapter	Connector

Clamp	Reducer

	Gender Gender


Male	Female

	For Use With For Use With

	Connection Type Connection Type


Hose	Pipe

	Connection Style Connection Style

Barbed

Threaded

	Barb Style Barb Style

	Standard
	Beaded

	Attachment Type Attachment Type

Worm-Drive Clamp

Band-and-Buckle Clamp

Bolt Clamp

Crimp-On Hose Ferrule

Interlocking Clamp

Gripping Tabs

	Number of Barbs Number of Barbs

	Multiple
	Single

	For Hose Material For Hose Material

Rubber

Plastic

	Barbed Connection Type Barbed Connection Type

	Clamp On
	Crimp On
	Push On
	Interlocking Clamp
	Fasten On
	Gripping Tabs

	Maximum Pressure Maximum Pressure

	Length Length

	Maximum Temperature Maximum Temperature

	Maximum Vacuum Maximum Vacuum

	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

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

REACH Compliant

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1,452 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.

Easy-Fit Barbed Hose Fittings for Air and Water

Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into hose and secure with a clamp.

Metal Barbed Hose Fittings for Air and Water

Metal hose fittings have better durability than plastic barbed hose fittings.

Plastic Barbed Hose Fittings for Water

Made of polypropylene, these fittings are lighter in weight than metal barbed hose fittings.

Metal Push-On Barbed Hose Fittings for Air and Water

Fittings are metal for better durability than plastic barbed hose fittings. They have sharper barbs than standard barbed hose fittings to grip push-on hose without the need for clamps or ferrules. The more you pull on the fittings, the tighter the hose will grip.

Plastic Push-On Barbed Hose Fittings for Water

Made of nylon, these fittings are lighter in weight than metal barbed hose fittings.They have sharper barbs than standard barbed hose fittings to grip push-on hose without the need for clamps or ferrules. The more you pull on the fittings, the tighter the hose will grip.

Easy-Fit Barbed Hose Fittings for Chemicals

Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into hose and secure with a clamp.

Metal Barbed Hose Fittings
for Chemicals and Petroleum

These metal hose fittings have better durability than plastic barbed hose fittings. They are 316 stainless steel for excellent corrosion and chemical resistance. Slide the barbed end into hose and secure with a clamp.

Plastic Barbed Hose Fittings
for Chemicals and Petroleum

Made of plastic, these fittings are lighter in weight than metal barbed fittings, yet have the chemical and corrosion resistance to stand up to harsh substances. Slide the barbed end into plastic or rubber hose and secure with a clamp.

Barbed Hose Fittings for Coolant

Designed for coolant applications up to 200 psi, these fittings have a standard barbed end that slides into hose and secures with a clamp.

Beaded Hose Fittings for Coolant

A single rounded bead grips onto hose just like a barb, but has no sharp edges that could cut or damage soft hose. Slide the beaded end into hose and secure with a clamp. Use in coolant applications up to 300 psi.

Barbed Hose Fittings for Steam

Use these barbed fittings in low-pressure steam applications up to 150 psi. Slide the barbed end into hose and secure with a clamp.

Interlocking-Clamp Hose Fittings for Steam

Also known as ground-joint couplings and boss couplings, these fittings are designed for high-pressure steam applications up to 600 psi. Insert the barbed end of the fitting into hose, then position the interlocking clamp over the hose and bolt into place. The clamp firmly grips your hose as it locks into the ring of the barbed end, creating a leak-tight seal.

Interlocking Clamps for Hose Fittings for Steam

Use with interlocking-clamp hose fittings to replace a damaged clamp. They consist of two halves held together by nuts and bolts.

Drinking Water Hose Fittings

Fittings meet NSF/ANSI Standard 61 for drinking (potable) water.

Barbed Hose Fittings for Food and Beverage

Fittings are made of FDA listed materials, so they’re suitable for food and beverage applications and won’t impart tastes or odors to the product. Slide the barbed end into hose and secure with a clamp.

Metal Garden Hose Fittings for Drinking Water

Fittings meet NSF/ANSI Standard 61 for drinking water. Attach them to garden hose for a variety of water supply applications. They are metal for better durability than plastic garden hose fittings.

Metal Garden Hose Fittings

Attach these fittings to garden hose for a variety of water supply applications. They are metal for better durability than plastic garden hose fittings.

Plastic Garden Hose Fittings

Made of nylon, these fittings are lighter in weight than metal garden hose fittings. Attach them to garden hose for a variety of water supply applications.

Threaded Garden Hose Couplings

These two-piece couplings thread together to create an access point within a garden hose line. The threaded design allows for a more secure hold at the point of connection than quick-disconnect and cam-and-groove garden hose couplings.

Push-On Barbed Hose Fittings for Hydraulic Fluid

Fittings have sharp barbs that grip push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip. Use in low-pressure hydraulic applications up to 350 psi.