Multiline Blocks | McMaster-Carr

	Number of Outlets Number of Outlets

	Pipe Size Pipe Size

	Thread Type Thread Type

UN/UNF (SAE Straight)

UNF

	Material Material

	For Use With For Use With

	Number of Circuits Number of Circuits

	Shape Shape


Junction Block	Manifold

	Flow Pattern Flow Pattern

	Right Angle
	Straight

	Outlet Location Outlet Location

	Mounting Location Mounting Location


DIN Rail	Surface

Panel	Circuit Board

Enclosure

	System of Measurement System of Measurement

Inch

Metric

	Length Length

	Number of Inlets Number of Inlets

	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

	Width Width

	Maximum Pressure Maximum Pressure

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

	Voltage Voltage

	Color Color

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

	Type Type


Connector	Reducer

Adapter	Plug

Reducing Adapter	Socket

	Maximum Temperature Maximum Temperature

	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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1,434 Products

How to Measure Threaded Pipe Size

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.

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.

Manifolds

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.

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.

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.

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.

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 with other types of terminals. Push wire into the spring clamp for a secure connection that withstands vibration.

Harsh Environment High-Current Distribution Bars

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

High-Temperature Terminal Blocks

Blocks are made of ceramic to withstand elevated temperatures.

Touch-Safe Terminal Blocks

High-Current Distribution Posts

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

Quick and Secure Modular
DIN-Rail Mount Terminal Blocks

The spring-clamp terminals on these blocks make wire installation faster than other types of terminals. Push wire into the spring clamp for a secure connection that withstands vibration.

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.

Circuit-Board-Mount Terminal Blocks

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

Modular DIN-Rail Mount Terminal Blocks

Use with DIN 3 and DIN 1 rail. Add as many circuits as you need with these terminal blocks and accessories.

High-Temperature Touch-Safe Terminal Blocks

Blocks are made of ceramic to withstand elevated temperatures.

Touch-Safe DIN-Rail Mount Terminal Blocks

Recessed terminals prevent accidental contact with a live circuit.

Terminal Blocks

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

Through-Panel Terminal Blocks

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

High-Current Terminal Blocks

These blocks handle at least twice as much current as standard terminal blocks.

Pluggable Touch-Safe Terminal Blocks

Combine a plug and a socket to form a terminal block—the two-piece design allows quick disconnection for equipment repairs.

Modular Distribution Bars

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

Enclosure-Mounted Terminal Blocks

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

How to Measure Threaded Pipe Size

Junction Blocks

Right-Angle Flow Junction Blocks

Straight-Flow Junction Blocks

Manifolds

Right-Angle Flow Rectangular Manifolds

Dual-Section Right-Angle Flow Rectangular Manifolds

Cleaned-and-Bagged Right-AngleFlow Rectangular Manifolds

Straight-Flow Rectangular Manifolds

Color-Coded Irregular Hex Manifolds

Low-Profile Square Manifolds

Miniature Hex Manifolds

Round Manifolds for Hose Lines

Low-Profile Hex Manifolds

Terminal Blocks

Space-Saver Terminal Blocks

Distribution Blocks

Distribution Posts

Quick and Secure Connect Terminal Blocks

Harsh Environment High-Current Distribution Bars

High-Temperature Terminal Blocks

Touch-Safe Terminal Blocks

High-Current Distribution Posts

Quick and Secure ModularDIN-Rail Mount Terminal Blocks

Modular Mini DIN-Rail Mount Terminal Blocks

Circuit-Board-Mount Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

High-Temperature Touch-Safe Terminal Blocks

Touch-Safe DIN-Rail Mount Terminal Blocks

Terminal Blocks

Through-Panel Terminal Blocks

High-Current Terminal Blocks

Pluggable Touch-Safe Terminal Blocks

Modular Distribution Bars

Enclosure-Mounted Terminal Blocks

Cleaned-and-Bagged Right-Angle
Flow Rectangular Manifolds

Quick and Secure Modular
DIN-Rail Mount Terminal Blocks