Steel Tube Fittings | McMaster-Carr

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300 Series Stainless Steel

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10,084 Products

Fluid Handling

Tube Fittings

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

4,961 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

253 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

66 products

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

107 products

Tube Fitting Sleeves

Pair with nuts and fittings to form a secure connection on tubing

65 products

Tube End Plugs

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

82 products

Tube End Cap and Plug Kits

Cover or insert into the ends of tube fittings to keep out dirt and debris

2 products

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

2 products

Tube Fitting Sleeve and Nut Kits

Everything you need to create a tight seal between a metal tube and a Yor-Lok fitting

16 products

Hose Fittings

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

2,633 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

12 products

Hose

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

49 products

Pipe and Pipe Fittings

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

357 products

Manifolds

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

129 products

Air Chucks

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

1 product

Pipe Crimping Tools

Seal press-connect fittings onto pipe without threading or welding

1 product

Tube Crimping Tools

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

4 products

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

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

40 products

Pressure-Relief Valves

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

17 products

Strainers

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

8 products

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

10 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

73 products

Strut Channel Framing and Fittings

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

211 products

Slip-On Framing and Fittings

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

22 products

Bolt-Together Framing and Fittings

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

49 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

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

Fastening and Joining

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

1 product

Brazing Rings

Snap into metal pipe and tubing to form leak-resistant joints more quickly than with hand-fed alloys

3 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

78 products

Containers, Storage, and Furniture

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products