3/8 Pipe Size Connectors | McMaster-Carr

Filter by

System of Measurement

Pipe Size

Thread Type

Shape

Material

Fitting Type

Gender

Fitting Connection

For Use With

Tube OD

Connects To

Maximum Pressure @ Temperature

Length

Tube Material

Thread Size

Pipe Material

Threading

OD

REACH Compliance

USMCA Qualifying

Pipe Schedule

Hose ID

Color

How can we improve?

5,372 Products

Fluid Handling

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

Pipe Nipples and Pipe

Pipe Nipples and Pipe

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

Rotary Unions

Transfer air, water, oil, and steam from supply lines to continuously revolving drums and rollers

Pipe Bushings

Sized specifically to adapt standard shaft collars to pipe, creating a tight fit

Pipe Collars

Clamp pipe passing through floors and walls

Hose

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose Nozzle Swivels

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

Junction Blocks

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Flow Sights

Visually confirm flow and inspect liquid color and clarity

Thermocouple and RTD Fittings

Thermocouple and RTD Fittings

Alter probe immersion depth or adapt unthreaded connections for use with threaded tanks and heads

Electrical

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Lubricating

Grease Fitting Adapters

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

Grease Fittings

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

Coolant Dispenser Hose and Fittings

Coolant Dispenser Hose and Fittings

Snap together and position to deliver coolant, oil, water, or air in any direction

Coolant Nozzles

Coolant Nozzles

Dispense coolant onto workpieces or tools directly from a tank

Oil Fittings

Install in engine blocks and other machinery to pour in oil while keeping dust out

Building and Machinery Hardware

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

Measuring and Inspecting

Test Lead Clips

Test Lead Clips

For hands-free testing, create a temporary yet secure electrical connection

Material Handling

Beam Clamps

Secure lines of pipe and duct, overhead equipment, and lighting fixtures to beam flanges

Lighting

Lamp Pipe

Connect lamp components and conceal wires when building or repairing lamps

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)