Steel Flanges | McMaster-Carr

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OSHA Compliant 29 CFR 1926.451

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Connects To

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For Flange Pipe Size

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

2B999

EAR99

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Compliant

Compliant with Exemptions

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2,104 Products

Fluid Handling

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

403 products

Pipe Fittings

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

117 products

Expansion Joints

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

82 products

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

17 products

Pipe Bleed Rings

Access inside a pipe line to vent pressure, drain liquid, and take samples

8 products

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

38 products

Hose and Hose Fittings

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

4 products

Orifice Valves

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

12 products

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

200 products

Diffuser Collars

Connect diffusers to duct

4 products

Chimney Pipe and Fittings

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

9 products

Fastening and Joining

Weld Nuts

Weld to metal surfaces to add permanent threads

214 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

47 products

Flange Nuts

The flange distributes pressure, so you don't need a washer

563 products

Spring Plunger Mounts

Secure ball-nose and long-nose spring plungers to fixture surfaces

7 products

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

123 products

Hydraulic Tank Pipe Suction Flanges

Seal pipes passing through top plates of hydraulic tanks

5 products

Pipe Flashings

Create watertight seals around vent pipes on roofs, even if they expand, contract, and vibrate

4 products

Power Transmission

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

19 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

36 products

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

6 products

Fabricating and Machining

Buffing and Polishing Wheel Flanges

Connect wheels with a center hub to bench grinders and buffers

4 products

Flange Spreaders

Separate stubborn flanges

5 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

50 products

Press-Fit Framing and Fittings

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

11 products

Slip-On Framing and Fittings

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

5 products

Facility and Grounds Maintenance

Floor, Wall, and Ceiling Plates

Add a finishing touch around protruding pipes; also known as escutcheons

16 products

Toilet Mounts

Secure toilet components with flanges and hardware kits

1 product

Measuring and Inspecting

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

13 products

Safety Equipment

Cover Plates for Fire Sprinkler Heads

Replace the cover on your fire sprinkler head for a clean look; also known as escutcheons

11 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products