Steel Pipe Fittings | McMaster-Carr

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Compressed Non-Asbestos Synthetic Fiber

Hastelloy C276 Nickel

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Stainless Steel

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Expansion Joint

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O-Ring Face Seal

Push to Connect

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Abrasive Materials

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Stainless Steel

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Stainless Steel

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Stainless Steel

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Stainless Steel

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Stainless Steel

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Stainless Steel

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Stainless Steel

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Stainless Steel

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26,109 Products

Fluid Handling

Pipe and Pipe Fittings

Pipe and Pipe Fittings

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

14,336 products

Tube Fittings

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

Tube Fitting Nuts

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

Tube Fitting Clamps

Tube Fitting Clamps

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

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Tube Fitting Sleeve and Nut Kits

Tube Fitting Sleeve and Nut Kits

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

Tube End Plugs

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

Tube Fitting Sleeves

Tube Fitting Sleeves

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

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

Tube Sampling Ports

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

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 Fitting Nuts

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Hose Clamps

Connect hose to barbed hose fittings

Hose End Plugs

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

Pipe Repair Clamps

Pipe Repair Clamps

Fix small holes and cracks in pipe without taking your system apart

Manifolds

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

Pipe Joiners

Connect heavy and difficult-to-position gasketed pipe without powered equipment

Tube Crimpers

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

Air Chucks

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

Pipeline Fluid Blockers

Pipeline Fluid Blockers

Temporarily block the flow between pipe flanges as you work downstream; also known as paddle blinds

Tube Repair Clamps

Tube Repair Clamps

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

Hose Kink Absorbers

Hose Kink Absorbers

Prevent hose from kinking to ensure maximum flow and extend hose life

Junction Blocks

Junction Blocks

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

On-Off Valves

Start and stop flow through a line

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Orifice Valves

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

Air Valves

Fill tanks, tires, and other pressurized equipment

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Pressure-Relief Valves

Pressure-Relief Valves

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

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

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Grease Fitting Repair Tools

Grease Fitting Repair Tools

Remove and repair broken or clogged grease fittings and re-tap threaded holes

Grease Fitting Manifolds

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

Grease Fitting Cleaning Tools

Grease Fitting Cleaning Tools

Flush out old grease, dirt, and debris from clogged fittings

Grease Fitting Installation Tools

Grease Fitting Installation Tools

Tap to insert grease fittings in unthreaded holes

Grease Gun Nozzles

Grease Gun Nozzles

Replace nozzles on grease guns

Grease Gun Tips

Grease Gun Tips

Attach to grease gun nozzles and direct a stream of lubricant into grease fittings on machinery

Grease Gun Tip Adapters

Grease Gun Tip Adapters

Quickly switch between standard, button-head, and flush-style grease fittings

Grease Gun Couplers

Grease Gun Couplers

Extend the dispensing tip on grease guns to lubricate angled and hard-to-reach areas

Oil Fittings

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

Building and Machinery Hardware

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

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

Slip-On Framing and Fittings

Slip-On Framing and Fittings

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

Press-Fit Framing and Fittings

Press-Fit Framing and Fittings

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

Protective Caps

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Grommets

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

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

Quick-Release Pin Retaining Caps

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

Measuring and Inspecting

Pipe Size Measuring Kits

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

Fabricating and Machining

Fixture Plate Plugs

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

Heating, Ventilation, and Air Conditioning

Chimney Pipe and Fittings

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

Material Handling

Scaffold Clamps

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Electrical Power, Networking, and Controlling

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

Facility and Grounds Maintenance

Toilet Mounts

Secure toilet components with flanges and hardware kits

Sink Drain Tailpieces

Sink Drain Tailpieces

Connect drains to P-traps and S-traps

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Containers, Storage, and Furniture

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

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