Steel Tube Fittings | McMaster-Carr

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2A999

2B999

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Body Material

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300 Series Stainless Steel

Plug Material

13,421 Products

Fluid Handling

Tube Fittings

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

6,958 products

Hose Fittings

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

3,477 products

Hose

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

65 products

Pipe and Fittings

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

671 products

Pipe Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

139 products

Manifolds

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

172 products

Tube Crimpers

Create a leak-tight seal between tubing and fittings without heat or solder

14 products

Pipe Crimper Jaws and Rings

Seal press-connect fittings onto pipe without threading or welding

2 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

1 product

Tube Repair Clamps

Mend small holes, cracks, and full-circle breaks in tubing without dismantling your system

18 products

Junction Blocks

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

5 products

Manual On/Off Valves

Start and stop flow through a line

186 products

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

179 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

1 product

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

153 products

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

40 products

Diverting Valves

Redirect flow between ports

37 products

Sampling Valves

Drain a small amount of liquid or gas for inspection without disrupting flow

4 products

Air-Actuated On/Off Valves

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

17 products

Orifice Valves

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

22 products

Motor-Actuated On/Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

10 products

Strainers

Install next to valves and pumps to catch debris in your line

32 products

Strainer Screens

Replace the screen in your strainer

4 products

Filter Housings

Use with filter cartridges to remove particles from liquid

10 products

Mufflers

Reduce noise and filter exhaust fumes

2 products

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

17 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

79 products

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

87 products

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

22 products

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

248 products

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

8 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

11 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

36 products

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Lubricating

Grease Fitting Adapters

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

29 products

Grease Fittings

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

9 products

Grease Gun Swivels

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

10 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

163 products

Material Handling

Hydraulic Jack Hose and Fittings

Convey hydraulic fluid between hydraulic jacks and their power source

21 products

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Fastening and Joining

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products