Square Pipe Flanges | McMaster-Carr

	Press-Fit Framing Component Press-Fit Framing Component


Rail End	Rail

	Material Material

	Flange Shape Flange Shape

	Rail OD Rail OD

	Press-Fit Framing Component Shape Press-Fit Framing Component Shape

Flange

Straight

	Slip-On Framing Component Slip-On Framing Component

	Rail End
	Through-Hole Rail Support

	Overall Height Overall Height

	Flanged Connection Surface Flanged Connection Surface


O-Ring Groove	Flat

	Type Type


Flange	Adapter

Cap

	Pipe Size Pipe Size

3/4

1 1/2

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Number of Mounting Holes Number of Mounting Holes

	Mounting Hole Diameter Mounting Hole Diameter

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Flange Width Flange Width

	Framing Type Framing Type

	Finish Finish

Painted

Powder Coated

Galvanized

	Flange Length Flange Length

	Clamp-On Framing Component Clamp-On Framing Component


Through-Hole Rail Support	Rail End

Add-On Through-Hole Rail Support

	Connection Style Connection Style

Flanged

Threaded

Socket Connect

	Slip-On Framing Component Shape Slip-On Framing Component Shape

Flange

Adjustable-Angle Flange

	Specifications Met Specifications Met

227 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Press-Fit Framing and Fittings

No need for fasteners—friction holds this framing together. Use press-fit framing and fittings to assemble carts, enclosures, and partitions.

Aluminum Slip-On Framing and Fittings

Half the weight of steel, this aluminum framing resists corrosion in wet environments.

Stainless Steel Slip-On Framing and Fittings

Made of 316 stainless steel, this framing has excellent resistance to chemicals and salt water.

Galvanized Iron and Steel Slip-On Framing and Fittings

To provide corrosion resistance in wet environments, this framing is galvanized.

Heavy Duty Clamp-On Framing and Fittings

Thick construction makes this framing strong and sturdy.

Flush-Fit Framing and Fittings

Flush connections between rails and fittings give structures a clean finished look. Use this framing for stair rails, work platforms, and workstations.

Metal Pipe and Pipe Fittings

High-Pressure Stainless Steel
Unthreaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

High-Pressure Stainless Steel
Threaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

High-Pressure Stainless Steel
Threaded SAE Two-Piece Pipe Flanges

Also known as Code 61 SAE hydraulic flanges, these let you create an access point in a high-pressure hydraulic line.

High-Pressure Steel Threaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

High-Pressure Steel Threaded
SAE Two-Piece Pipe Flanges

Combine an adapter with a two-piece pipe flange (sold separately) to build a customized flange connection for noncorrosive environments.

High-Pressure Steel Unthreaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

Pipe Suction Flanges for Hydraulic Tanks

Seal pipes passing through the top plate of a hydraulic tank.