Bolt Flanges | McMaster-Carr

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Material

Compressed Non-Asbestos Synthetic Fiber

Copper

Fiberglass

Graphalloy

Hastelloy C276 Nickel

System of Measurement

Pipe Size

Thread Size

Length

Fitting Type

Fitting Connection

Shaft Diameter

Pressure Class

Flanged Connection Surface

Mounted Bearing Type

Four-Bolt Flange Mount

Tapped Base Mount

Thread Mount

Three-Bolt Flange Mount

Two-Bolt Flange Mount

Fastener Strength Grade/Class

Number of Bolt Holes

Thread Type

UN/UNF (SAE Straight)

Flange OD

Threading

Pipe Schedule

Specifications Met

Fitting Material

Pipe Material

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

5,508 Products

Fluid Handling

Pipe Flanges

Bolt together with a gasket to create an access point within a line

1,158 products

Pipe Straights

Join lengths of pipe to send contents in one direction

15 products

Pipe Flange Adapters

Combine with a two-piece pipe flange to build a customized flange connection

13 products

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

80 products

Pipe Expansion Joints

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

116 products

Tube and Tube Fittings

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

39 products

Hose and Hose Fittings

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

26 products

Orifice Valves

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

24 products

Power Transmission

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

1,050 products

Bearing Housings

Mount your own bearings in place

64 products

Ball Bearings

Create less friction than other bearings for use at high speeds

51 products

Linear Bearings

Minimize friction as parts move along a shaft

379 products

Ball Spline Bearings

Pair with ball splines for applications requiring complex, fast movements, such as robotics

13 products

Fastening and Joining

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

528 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

1,589 products

Heating, Ventilation, and Air Conditioning

Duct Flanges

Mount on equipment to start a run of duct, or create a secure joint between two sections

169 products

Facility and Grounds Maintenance

Toilet Mounts

Secure toilet components with flanges and hardware kits

11 products

Urinal Flanges

Connect a urinal to your drainage system

2 products