Junction Manifolds | McMaster-Carr

	Number of Outlets Number of Outlets

	Pipe Size Pipe Size

	Thread Type Thread Type

UN/UNF (SAE Straight)

NPTF

UNF

	Material Material

	For Use With For Use With

	Shape Shape


Junction Block	Manifold

	Number of Circuits Number of Circuits

	Flow Pattern Flow Pattern

	Right Angle
	Straight

	Outlet Location Outlet Location

	Number of Inlets Number of Inlets

	Mounting Location Mounting Location


DIN Rail	Surface

Panel	Circuit Board

Enclosure

	System of Measurement System of Measurement

Inch

Metric

	Length Length

	Width Width

	Height Height

	For Wire Gauge For Wire Gauge

28
26
24
22
20
18
16
14
12
10
8
6
4
3
2
1/0
2/0
3/0
4/0

	Maximum Pressure Maximum Pressure

	Outlet Center-to-Center Outlet Center-to-Center

	Color Color

	Black
	Beige
	Blue
	Gray
	Gray/Black
	Gray/Orange
	Gray/Red
	Gray/Yellow
	Green
	Green/Yellow
	Orange
	Red
	White
	Yellow

	Voltage Voltage

	Type Type

	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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1,462 Products

How to Measure Threaded Pipe Size

Straight-Flow Junction Blocks

Use these junction blocks to organize and separate multiple lines in your system. They have threaded holes that allow air or fluid to flow straight through the block.

Right-Angle Flow Junction Blocks

These junction blocks have threaded holes that allow air or fluid to flow at a 90° angle through the block. Use them to organize and separate multiple lines in your system.

Right-Angle Flow Rectangular Manifolds

Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers.

Dual-Section Right-Angle Flow Rectangular Manifolds

These manifolds have two separate sections inside, so you can run two different substances through them without worrying about them intermixing. Also known as headers.

Cleaned-and-Bagged Right-Angle
Flow Rectangular Manifolds

Designed for ultra-clean environments, these manifolds are cleaned, dried, and vacuum sealed in plastic to prevent dirt and moisture from contaminating the inside. Use them to distribute air or fluid to multiple locations from a single supply source. Also known as headers.

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 air or fluid to follow a straight path, improving flow through your system. Also known as headers.

Low-Profile Square Manifolds

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 or fluid to three locations from a single supply source.

Miniature Hex Manifolds

A great solution when space is at a premium, these manifolds are less than an inch in height, yet allow you to supply up to 12 lines from one distribution point.

Color-Coded Irregular Hex Manifolds

Use these manifolds with molding equipment to circulate hot and cold water through your line. They have a red side for hot water and a blue side for cold water.

Round Manifolds for Hose Lines

Mount these manifolds on the end of a hose line to distribute air, water, or hydraulic fluid to three locations from a single supply source.

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 or fluid to five locations from a single supply source.

ARO Quick-Disconnect Hose Couplings for Air

Compatible with ARO-shape plugs and sockets.

NFPA Valve-Mounting Blocks

NFPA valve-mounting blocks have standardized valve mounting patterns to keep hydraulic lines compact and organized.

Terminal Blocks

Space-Saver Terminal Blocks

A single row of terminals fits in narrow spaces.

Distribution Blocks

With the help of distribution blocks, you can take a high-current wire from your power source and connect it to one or more electrical devices.

Distribution Posts

Stack multiple ring or spade terminals on the stud terminal; the current flows through the stacked terminals.

Quick and Secure Connect Terminal Blocks

The spring-clamp terminals on these blocks make wire installation faster than other types of terminals. These wire connections also stand up to vibration and temperature changes.

Harsh Environment High-Current Distribution Bars

Protect connections against corrosion.These bars are tin-plated copper and have stainless steel terminals.

High-Current Distribution Posts

Distribute up to 150 amps from the center stud terminal to the eight screw terminals around it.

Modular DIN-Rail Mount Terminal
Blocks with LED Status Indicator

Visually confirm your circuits are working as expected. These terminal blocks have integrated LEDs that indicate if your circuits are powered or not, helping you troubleshoot issues.

Modular Mini DIN-Rail Mount Terminal Blocks

Use with DIN 2 rail. Add as many circuits as you need with these terminal blocks and accessories.

High-Temperature Short-Resistant Terminal Blocks

Made of ceramic, these blocks withstand high-temperature applications that reach up to 1110° F such as ovens and furnaces. They have recessed screws to reduce the chance you’ll cause a short by accidentally connecting two circuits with a screwdriver or other tool.

Quick and Secure Modular
DIN-Rail Mount Terminal Blocks

No need to tighten or loosen any screws—these terminals lock your wiring in place with spring clamps.

Connector-Compatible Modular
DIN-Rail Mount Terminal Blocks

One of the connections on these terminal blocks is a socket instead of a traditional terminal, making it easy to swap out equipment or change your wiring even in small enclosures. Instead of having to attach wire inside the tight space of your enclosure, you can wire a connector wherever it’s easiest and then plug it into the socket.

Short-Resistant Terminal Blocks

Recessed screw terminals prevent you from accidentally connecting two circuits with a screwdriver or other tool, causing a short.

Circuit-Board-Mount Terminal Blocks

Solder the pins on these blocks directly to your circuit board.

Terminal Blocks with Built-In Configurable Jumpers

Customize these blocks’ wiring as your application changes. They come with jumpers that connect terminals on the same block, either across or next to one another.

Terminal Blocks

Mount blocks to a panel or the surface of a machine. Also known as barrier terminal strips.

Touch-Safe Terminal Blocks

Rated IP20, these blocks have recessed terminals to prevent accidental contact with live circuits.

Short-Resistant Easy-Disconnect Terminal Blocks

Best for equipment requiring regular servicing, these blocks disconnect without having to remove any wiring thanks to their plug-and-socket design. Their recessed screws prevent shorts by reducing the risk you’ll connect two circuits with a screwdriver or other tool.

Through-Panel Terminal Blocks

Blocks mount in a cutout and have terminals on both sides.

Enclosure-Mounted Terminal Blocks

Save time when wiring connections in a junction box; these blocks come already installed in an enclosure.

Modular DIN-Rail Mount Terminal Blocks

Use with DIN 3 rail. Add as many circuits as you need with these terminal blocks and accessories.

Modular Distribution Bars

Build your own distribution system by adding terminal blocks to these bars.