Metric Flanges | McMaster-Carr

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	System of Measurement System of Measurement	Show

Metric

	System of Measurement System of Measurement	Hide

Inch

Metric

	Type Type


Flange	Adapter

Clamp	Plug

	Material Material

	DN Flange Size DN Flange Size

100

150

	Pipe Size Pipe Size

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

	Connection Style Connection Style

	Specifications Met Specifications Met

ASTM

DIN

	Number of Bolt Holes Number of Bolt Holes

	Flange OD Flange OD

	Bolt Circle Diameter Bolt Circle Diameter

	For Use With For Use With

Wire, Cable,
and Cords

	Construction Construction

Seamless

Welded

	Shape Shape


Straight	Cap/Plug

Ring with Bolt Holes	Ring

Round

	Maximum Steam Pressure Maximum Steam Pressure

125 psi @ 300° F

145 psi @ 300° F

180 psi @ 300° F

	Flanged Connection Surface Flanged Connection Surface

	Raised

	For Bolt Diameter For Bolt Diameter

12mm

16mm

20mm

	Maximum Pressure Maximum Pressure

	Connection Type Connection Type


Pipe	Tube

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

DFARS Specialty Metals
COTS-Exempt

	Bolt Hole Diameter Bolt Hole Diameter

14mm

18mm

22mm

	Wall Thickness Wall Thickness

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

REACH Compliant

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

RoHS Compliant

RoHS Compliant with
Exemptions

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197 Products

Pipe, Tubing, Hose, and Fittings

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Bolt two same-size flanges together with a gasket to create an access point within a pipe line.

Low-Pressure Steel Unthreaded Pipe Flanges

Bolt two flanges of the same size together with a gasket to create an access point in a pipe line.

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications.

Clamps for High-Polish Metal
Quick-Clamp Sanitary Tube Fittings

Connect quick-clamp sanitary tube fittings—also known as aseptic fittings—for a fast and easy way to access your line.

Building and Machinery Hardware

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.

Wet-Location Snap-In Sealing Grommets

Snap these grommets into place to hold wire, cable, and cords in wet locations and form a seal against dust, debris, and water.

Pipe Gaskets with Bolt Holes

Oil-Resistant Compressible Buna-N
Pipe Gaskets with Bolt Holes

Made of Buna-N rubber, these gaskets compress to ensure a tight seal. They resist oil, water, and salts.

Oil-Resistant Aramid/Buna-N
Pipe Gaskets with Bolt Holes

These blended aramid fiber/Buna-N rubber gaskets also resist water and aliphatic hydrocarbons such as ethylene.

Oil-Resistant Aramid/Buna-N Pipe
Gaskets with Bolt Holes and Fasteners

Each gasket comes with enough bolts and nuts to create a connection between two steel pipe flanges.

Chemical-Resistant Viton® Fluoroelastomer
Pipe Gaskets with Bolt Holes

These gaskets resist boric acid, citric acid, isopropyl alcohol, fuel, oil, and transmission fluid.

Water- and Steam-Resistant EPDM
Pipe Gaskets with Bolt Holes

Made of EPDM rubber, these gaskets also resist salt water.

Pipe Gaskets

High-Temperature Metallic Pipe Gaskets

Also known as spiral-wound gaskets, these have a carbon steel outer ring and a 304 stainless steel inner sealing element with a graphite-based filler.

Chemical-Resistant Viton®
Fluoroelastomer Pipe Gaskets

Resistant to boric acid, citric acid, isopropyl alcohol, fuel, oil, and transmission fluid.

Oil-Resistant Aramid/Buna-N Pipe Gaskets

In addition to oil, these blended aramid fiber/Buna-N rubber gaskets resist water and aliphatic hydrocarbons such as ethylene.

Water- and Steam-Resistant EPDM Pipe Gaskets

Also resistant to salt water.

Lead Screws and Screw Jacks

Metric Precision Lead Screws and Nuts

Also known as trapezoidal-thread lead screws and nuts.

Metric Fast-Travel Ultra-Precision
Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Metric Ultra-Precision Lead Screws and Nuts

Also known as single-start and self-locking lead screws and nuts, these have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest.

Metric Lead Screws and Nuts

These metric lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. They're commonly found in hand-powered clamps, vises, grates, doors, and work tables.

Metric Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start metric ball screws and nuts, these have a single thread that runs the length of the screw.