Iron Flanges | McMaster-Carr

Clear All

	Pipe Size Pipe Size

3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8

	Thread Type Thread Type

NPT

	Type Type


Flange	Adapter

Reducing Adapter	Bushing

Saddle Tap

	Material Material	Show

Iron

	Material Material	Hide

	Flanged Connection Surface Flanged Connection Surface

	Flat

	Connection Style Connection Style

Flanged

Threaded

Clamp On

	Slip-On Framing Component Slip-On Framing Component

	Rail End
	Through-Hole Rail Support

	For Use With For Use With

	For Pipe Material For Pipe Material

Steel

	System of Measurement System of Measurement

Inch

	Rail OD Rail OD

	Flange OD Flange OD

	For Pipe Schedule For Pipe Schedule

	40

	Specifications Met Specifications Met

ASME

ASTM

	Finish Finish

Black Coated

Epoxy Coated

Galvanized

	Number of Bolt Holes Number of Bolt Holes

	Flange Shape Flange Shape

	Connection Type Connection Type

	Pipe

	Bolt Circle Diameter Bolt Circle Diameter

	Flange Diameter Flange Diameter

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

Flange

Adjustable-Angle Flange

	For Bolt Diameter For Bolt Diameter

1/2"

5/8"

3/4"

	Maximum Pressure Maximum Pressure

	Bolt Hole Diameter Bolt Hole Diameter

5/8"

3/4"

7/8"

View catalog pages (9)

Forward

How can we improve?

105 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.

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

Saddle tap tees tap into existing pipe lines so you can install branch lines, valves, and other equipment. The gasket and clamps create a tight seal so the opening won’t leak. To install, shut down your line and secure the clamps, then drill a hole into the pipe.

For technical drawings and 3-D models, click on a part number.

Bushing Straight Reducing Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: See table
Specifications Met: ASME B16.14
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Class	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Male × NPT Female
1 1/4	3/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	000000
1 1/4	1	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	3/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	1	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	1 1/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2	1	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2	1 1/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2	1 1/2	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2 1/2	1 1/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
2 1/2	2	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
3	2	125	150 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	2 1/2	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	00000
4	3	125	150 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000

Bushing Straight Reducing Adapters for Flat Tanks

For Use With: Air, Diesel Fuel, Gasoline, Oil, Steam, Water
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Lg.	Hex Wd.	Material		Each
NPT Male × NPT Female
1 1/2	1/2	1 7/32"	1 3/8"	Black-Coated Iron	0000000	000000
1 1/2	3/4	1 5/16"	1 23/32"	Black-Coated Iron	0000000	00000
1 1/2	1	1 5/16"	1 23/32"	Black-Coated Iron	0000000	00000
2	3/8	1 5/16"	1 3/8"	Black-Coated Iron	0000000	00000
2	1/2	1 5/16"	1 3/8"	Black-Coated Iron	0000000	00000
2	3/4	1 3/8"	1 11/16"	Black-Coated Iron	0000000	00000
2	1	1 11/16"	2 1/32"	Black-Coated Iron	0000000	00000
2	1 1/4	1 9/16"	2 19/32"	Black-Coated Iron	0000000	00000
2	1 1/2	1 25/32"	2 17/32"	Black-Coated Iron	0000000	00000
2 1/2	2	1 25/32"	2 17/32"	Black-Coated Iron	0000000	00000
3	1	1 9/16"	2 5/16"	Black-Coated Iron	0000000	00000
3	1 1/2	1 21/32"	2 11/16"	Black-Coated Iron	0000000	00000
3	2	1 3/4"	3 1/4"	Black-Coated Iron	0000000	00000
4	1	1 7/8"	2 7/8"	Black-Coated Iron	0000000	00000
4	2	1 13/32"	2 9/16"	Black-Coated Iron	0000000	00000
4	2 1/2	2 11/32"	4 5/16"	Black-Coated Iron	0000000	00000
4	3	2 7/16"	4 3/4"	Black-Coated Iron	0000000	00000

Saddle Tap Tees

For Use With: Air, Water
Temperature Range: -20° to 180° F

NPT Female
Pipe Size (A)	For Pipe Size	For Pipe OD	Lg.	Max. Pressure	Max. Vacuum	Color	Material	Gasket Material		Each
1/2	1 1/2, 1 1/4	1.9", 1.66"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	000000
1/2	2	2 3/8"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1/2	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1/2	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1/2	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1/2	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	1 1/2, 1 1/4	1.9", 1.66"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	2	2 3/8"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
3/4	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	1 1/2, 1 1/4	1.9", 1.66"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	2	2 3/8"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/4	2	2 3/8"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/4	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/4	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/4	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/4	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	000000
1 1/2	2	2 3/8"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/2	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/2	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/2	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
1 1/2	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	000000
2	3	3 1/2"	3 1/4"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
2	4	4 1/2"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
2	6	6 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	00000
2	8	8 5/8"	3 5/8"	100 psi @ 72° F	15 in. of Hg @ 72° F	Blue	Epoxy-Coated Iron	Buna-N Rubber	00000000	000000

FM-Approved Low-Pressure Cast Iron Threaded Pipe Flanges

Front

Flat Surface on Back

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met:
3/4 Pipe Size: ASME B1.20.1, ASME B16.1, ASTM A126, FM Approved
All other sizes: ASME B1.20.1, ASME B16.1, ASTM A126, FM Approved, UL Listed
Pipe Nipples and Pipe: Use Schedule 40 steel
Fittings: Use Class 125 or 150 iron and steel

Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer. Bolt two flanges of the same size together with a gasket (sold separately) to create an access point within a line. Use in noncorrosive environments.

For technical drawings and 3-D models, click on a part number.

			Bolt Hole
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure	Max. Steam Pressure	Material		Each
NPT
3/4	3 7/8"	1/2"	5/8"	4	2 3/4"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
1	4 1/4"	1/2"	5/8"	4	3 1/8"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/4	4 5/8"	1/2"	5/8"	4	3 1/2"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	5"	1/2"	5/8"	4	3 7/8"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2	6"	5/8"	3/4"	4	4 3/4"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2 1/2	7"	5/8"	3/4"	4	5 1/2"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	7 1/2"	5/8"	3/4"	4	6"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	9"	5/8"	3/4"	8	7 1/2"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
5	10"	3/4"	7/8"	8	8 1/2"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
6	11"	3/4"	7/8"	8	9 1/2"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
8	13 1/2"	3/4"	7/8"	8	11 3/4"	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000

Galvanized Iron and Steel Slip-On Framing and Fittings

To provide corrosion resistance in wet environments, this framing is galvanized. Slip the fittings over rails to construct custom railings, guard rails, storage racks, and shelving. Tighten the included set screws for a secure hold.

Galvanized iron fittings are malleable iron.

For technical drawings and 3-D models, click on a part number.

Rail Ends

Rectangular Adjustable-Angle

L-Shaped

Oval

Round

Flush

Offset

Rail ends attach to rails on one end and have a flange on the other end to attach to floors, walls, and ceilings.

	Flange					Mounting Holes
For Rail OD	Lg.	Wd.	Dia.	Overall Ht.	Material	No. of	Dia.	Mounting Fasteners Included	Includes		Each
Rectangular Adjustable-Angle
1"	4 3/8"	2"	__	3 3/4"	Galvanized Iron	__	__	__	Set Screws	00000000	000000
1 1/4"	4 3/8"	2"	__	3 3/4"	Galvanized Iron	__	__	__	Set Screws	0000000	00000
1 5/8"	4 3/8"	2"	__	4 1/8"	Galvanized Iron	__	__	__	Set Screws	0000000	00000
1 7/8"	4 3/8"	2"	__	4 3/8"	Galvanized Iron	__	__	__	Set Screws	0000000	00000
2 3/8"	4 3/8"	2"	__	4 5/8"	Galvanized Iron	__	__	__	Set Screws	00000000	00000
L-Shaped
1 1/4"	5 1/8"	3"	__	3 1/2"	Galvanized Iron	4	7/16"	No	Set Screws	00000000	00000
1 5/8"	5 3/4"	3 1/8"	__	3 5/8"	Galvanized Iron	4	7/16"	No	Set Screws	00000000	00000
1 7/8"	6 3/8"	3 5/8"	__	3 5/8"	Galvanized Iron	4	7/16"	No	Set Screws	00000000	00000
Oval
1"	4 5/8"	2 1/2"	__	3"	Galvanized Iron	2	7/16"	No	Set Screws	00000000	00000
1 1/4"	5 1/8"	3"	__	3 1/2"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000
1 5/8"	5 1/2"	3"	__	3 1/2"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000
1 7/8"	6 1/8"	3 3/8"	__	3 1/2"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000
2 3/8"	6 1/2"	4"	__	5"	Galvanized Iron	2	11/16"	No	Set Screws	00000000	00000
Round
1"	__	__	3 1/8"	1 5/8"	Galvanized Iron	4	1/4"	No	Set Screws	00000000	00000
1"	__	__	5 1/8"	2 1/2"	Galvanized Iron	4	5/16"	No	Set Screws	00000000	00000
1 1/4"	__	__	3 5/8"	1 7/8"	Galvanized Iron	4	1/4"	No	Set Screws	0000000	00000
1 1/4"	__	__	5 1/2"	2 1/2"	Galvanized Iron	4	5/16"	No	Set Screws	00000000	00000
1 5/8"	__	__	4"	2"	Galvanized Iron	4	1/4"	No	Set Screws	0000000	00000
1 5/8"	__	__	5 7/8"	2 1/2"	Galvanized Iron	4	5/16"	No	Set Screws	00000000	00000
1 7/8"	__	__	4 1/2"	2 5/16"	Galvanized Iron	4	1/4"	No	Set Screws	0000000	00000
1 7/8"	__	__	6 1/8"	2 1/2"	Galvanized Iron	4	5/16"	No	Set Screws	00000000	00000
2 3/8"	__	__	5"	2 1/2"	Galvanized Iron	4	3/8"	No	Set Screws	00000000	00000
Flush
1 1/4"	3 3/4"	4 1/8"	__	2"	Galvanized Iron	3	7/16"	No	Set Screws	00000000	00000
1 5/8"	4 1/4"	4 1/4"	__	2 1/4"	Galvanized Iron	3	7/16"	No	Set Screws	00000000	00000
1 7/8"	4 3/8"	4 5/8"	__	2 1/2"	Galvanized Iron	3	7/16"	No	Set Screws	00000000	00000
Offset
1 1/4"	5 3/8"	1 3/4"	__	3 1/4"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000
1 5/8"	5 1/2"	2"	__	3 3/4"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000
1 7/8"	5 7/8"	2 1/4"	__	4"	Galvanized Iron	2	9/16"	No	Set Screws	0000000	00000

Through-Hole Rail Supports

Through-hole fittings allow rails to run all the way through.

Rail supports secure long runs of railing.

	Flange				Mounting Holes
For Rail OD	Lg.	Wd.	Overall Ht.	Material	No. of	Dia.	Mounting Fasteners Included	Includes		Each
Offset
1"	3"	1 7/8"	2 7/8"	Galvanized Iron	2	5/16"	No	Set Screws	00000000	000000
1 1/4"	3 1/4"	1 3/4"	3 1/4"	Galvanized Iron	2	7/16"	No	Set Screws	00000000	00000
1 5/8"	4"	1 3/4"	3 5/8"	Galvanized Iron	2	7/16"	No	Set Screws	00000000	00000
1 7/8"	4 5/16"	1 7/8"	4"	Galvanized Iron	2	7/16"	No	Set Screws	00000000	00000