3/8 Pipe Size Connectors | McMaster-Carr

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System of Measurement

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Material

Stainless Steel

Shape

Double 90° Elbow

Gender

Fitting Type

Reducing Adapter

Tube OD

For Use With

Organic Solvents

Pharmaceuticals

Fitting Connection

Spec Image

O-Ring Face Seal

Push to Connect

Spec Image

Quick Disconnect

Socket-Connect Union

Spec Image

Connects To

OD

0.125" to 0.188"

0.188" to 0.25"

0.25" to 0.312"

Maximum Pressure @ Temperature

1,800 psi @ 0° F

2,000 psi @ 50° F

14.5 psi @ 70° F

15 psi @ 70° F

25 psi @ 70° F

30 psi @ 70° F

125 psi @ 70° F

145 psi @ 70° F

150 psi @ 70° F

180 psi @ 70° F

200 psi @ 70° F

230 psi @ 70° F

235 psi @ 70° F

300 psi @ 70° F

400 psi @ 70° F

600 psi @ 70° F

1,000 psi @ 70° F

1,500 psi @ 70° F

Length

Tube Material

Stainless Steel

Thread Size

RoHS

Compliant with Exemptions

Hose ID

Pipe Material

Stainless Steel

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Color

Maximum Temperature

Less than 100° F

100° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

ID

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6,318 Products

Fluid Handling

Tube Fittings

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

Pipe and Fittings

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

Rotary Joints

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

Pipe Collars

Clamp pipe passing through floors and walls

Hose Fittings

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

Hose

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

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

Manual On/Off Valves

Manual On/Off Valves

Start and stop flow through a line

Propane Tank Valves

Propane Tank Valves

Start and stop the flow of propane from a tank

Orifice Valves

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

Float Valve Bodies

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

Solenoid On/Off Valves

Solenoid On/Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

Air-Actuated On/Off Valves

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

Thermocouple and RTD Fittings

Thermocouple and RTD Fittings

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

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

Electrical Power, Networking, and Controlling

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Conduit and Fittings

Conduit and 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

Standoffs

Separate, position, or connect components in assemblies

Material Handling

Vacuum Cup and Lifter Mounts

Vacuum Cup and Lifter Mounts

Mount vacuum cups or vacuum lifters to surfaces

Hydraulic Jack Hose and Fittings

Hydraulic Jack Hose and Fittings

Convey hydraulic fluid between hydraulic jacks and their power source

Beam Clamps

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

Lubricating

Grease Fitting Adapters

Grease Fitting Adapters

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

Coolant Hose and Fittings

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

Grease Guns

Manually inject lubrication through grease fittings on equipment and machinery

Grease Fittings

Grease Fittings

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

Grease Gun Z-Swivels

Grease Gun Z-Swivels

Move grease-dispensing guns in any direction without kinking the outlet hose

Oil Fittings

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

Coolant Nozzles

Coolant Nozzles

Dispense coolant onto workpieces or tools directly from a tank

Building and Machinery Hardware

T-Slotted Framing Manifolds

T-Slotted Framing Manifolds

Distribute air or liquid from a single supply to multiple areas in a T-slotted framing structure

Positioning Arms

Positioning Arms

Mount and position tools and other small equipment

Grommets

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

Power Transmission

Compressed Air Filter/Regulator/Lubricator Manifolds

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

Hydraulic On/Off Valves

Hydraulic On/Off Valves

Control the flow in high-pressure hydraulic systems

Shaft Collar Adapters

Shaft Collar Adapters

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

Lighting

Lamp Pipe

Connect lamp components and conceal wires when building or repairing lamps

Measuring and Inspecting

Test Lead Clips

Test Lead Clips

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

Facility and Grounds Maintenance

Water Supply Stop Valves

Water Supply Stop Valves

Shut off water to faucets, toilets, and fountains

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