Metric Tri-Clamps | McMaster-Carr

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	System of Measurement System of Measurement	Show

Metric

	System of Measurement System of Measurement	Hide

Inch

Metric

	For Tube OD For Tube OD

	Type Type


Adapter	Clamp

	Connection Style Connection Style

Quick Clamp

Butt Weld

	Clamp Type Clamp Type

	Wing Nut

	Material Material

304 Stainless Steel

316 Stainless Steel

316L Stainless Steel

	For Tube Material For Tube Material

316/316L Stainless Steel

304/304L Stainless Steel

	Specifications Met Specifications Met

3-A Sanitary Certified

DIN

	Shape Shape

	Straight

	Quick-Clamp Connection Type Quick-Clamp Connection Type

Standard

	Length Length

	Environment Environment

Sanitary

Food and Beverage

	For Tube Fabrication For Tube Fabrication

Welded

	Connection Type Connection Type

	Tube

	DN Size DN Size

100

125

150

	Flange OD Flange OD

	Sterilize With Sterilize With

Steam (Autoclaving)

	For Flange OD For Flange OD

	Nut Material Nut Material

304 Stainless Steel

316 Stainless Steel

	Maximum Pressure Maximum Pressure

	For Use With For Use With

	Exterior Smoothness Exterior Smoothness

32 Ra

63 Ra

	Wall Thickness Wall Thickness

1mm

1.5mm

2mm

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98 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.

Temperature Range: See Gaskets or O-Rings

The smooth finish inside these fittings makes it easy to remove product residue. Also known as aseptic and tri-clamp fittings, they connect with a gasket or O-ring, a clamp, and another quick-clamp fitting for a fast and easy way to access your line. The pressure rating of the fitting will vary depending on the clamp you choose, and the temperature rating will vary based on the gasket or O-ring material you choose.

Since metric fittings require an O-ring to prevent leaks, you must connect one fitting with a flat flange surface to a mating fitting that has an O-ring groove flange surface.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Fittings that meet DIN 11864 or 32676 adhere to international standards for sanitary quick-clamp fittings. 3-A certified fittings comply with sanitary standards.

Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket or O-ring (all sold separately).

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

Straight Adapters, Tube × Butt-Weld Tube

Straight Adapters, Female Flange x Butt-Weld Pipe

Straight Adapters, Male Flange x Butt-Weld Pipe

For Use With: Air, Beverage, Dairy, Food, Water
Tubing:
Inch: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
Metric: Use with welded 304/304L or 316/316L stainless steel
Metric with Flat Flange Surface and O-Ring Flange Surface: Use with welded 316/316L stainless steel taht meets DIN 11866
Specifications Met: See table

Fittings with butt-weld end are also known as ferrules; they weld to tubing for a permanent, flush connection.

For Tube OD
Quick Clamp	Butt Weld	Flange OD	Lg.	Wall Thick.	Specifications Met		Each
304 Stainless Steel
Metric
10mm	13mm	34mm	18mm	1mm	3-A Certified 63-03, DIN 32676	0000000	000000
16mm	19mm	34mm	18mm	1mm	3-A Certified 63-03, DIN 32676	000000	00000
20mm	23mm	34mm	18mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
26mm	29mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
32mm	35mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
38mm	41mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
50mm	53mm	64mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
66mm	70mm	91mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	00000
81mm	85mm	106mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	00000
100mm	104mm	119mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	00000
125mm	129mm	155mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	000000
150mm	154mm	183mm	28mm	2mm	3-A Certified 63-03, DIN 32676	000000	000000
316/316L Stainless Steel
Metric with Flat Flange Surface
10mm	10mm	34mm	38mm	1.5mm	DIN 11864	00000000	00000
15mm	15mm	34mm	38mm	1.5mm	DIN 11864	00000000	00000
20mm	20mm	50.5mm	38mm	1.5mm	DIN 11864	00000000	00000
25mm	25mm	50.5mm	38.5mm	1.5mm	DIN 11864	00000000	00000
32mm	32mm	50.5mm	44mm	1.5mm	DIN 11864	00000000	00000
40mm	40mm	64mm	44mm	1.5mm	DIN 11864	00000000	00000
50mm	50mm	77.5mm	44.5mm	1.5mm	DIN 11864	00000000	00000
65mm	65mm	91mm	56.5mm	2mm	DIN 11864	00000000	00000
80mm	80mm	106mm	58.5mm	2mm	DIN 11864	00000000	000000
Metric with O-Ring Groove Flange Surface
10mm	10mm	34mm	39.5mm	1.5mm	DIN 11864	00000000	00000
15mm	15mm	34mm	39.5mm	1.5mm	DIN 11864	00000000	00000
20mm	20mm	50.5mm	39.5mm	1.5mm	DIN 11864	00000000	00000
25mm	25mm	50.5mm	40mm	1.5mm	DIN 11864	00000000	00000
32mm	32mm	50.5mm	45.5mm	1.5mm	DIN 11864	00000000	00000
40mm	40mm	64mm	45.5mm	1.5mm	DIN 11864	00000000	00000
50mm	50mm	77.5mm	46mm	1.5mm	DIN 11864	00000000	00000
65mm	65mm	91mm	58mm	2mm	DIN 11864	00000000	00000
80mm	80mm	106mm	60mm	2mm	DIN 11864	00000000	000000
316L Stainless Steel
Metric
10mm	13mm	34mm	18mm	1mm	3-A Certified 63-03, DIN 32676	0000000	00000
16mm	19mm	34mm	18mm	1mm	3-A Certified 63-03, DIN 32676	0000000	00000
20mm	23mm	34mm	18mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
26mm	29mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
32mm	35mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
38mm	41mm	50.5mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
50mm	53mm	64mm	21.5mm	1.5mm	3-A Certified 63-03, DIN 32676	0000000	00000
66mm	70mm	91mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	00000
81mm	85mm	106mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	00000
100mm	104mm	119mm	28mm	2mm	3-A Certified 63-03, DIN 32676	000000	000000
125mm	129mm	155mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	000000
150mm	154mm	183mm	28mm	2mm	3-A Certified 63-03, DIN 32676	0000000	000000

Clamps

304 Stainless Steel with Wing Nut

Clamps with wing nut tighten by hand. Clamps with bolt tighten with a wrench. They handle higher pressures than wing-nut clamps for a stronger, more secure hold.

304 Stainless Steel with Wing Nut
For Tube OD	For Flange OD	Max. Pressure	Specifications Met		Each
10mm, 16mm, 20mm	34mm	90 psi @ 72° F	DIN 32676	0000000	000000
26mm, 32mm, 38mm	51mm	90 psi @ 72° F	DIN 32676	0000000	00000
50mm	64mm	50 psi @ 72° F	DIN 32676	0000000	00000
66mm	91mm	50 psi @ 72° F	DIN 32676	0000000	00000
81mm	106mm	30 psi @ 72° F	DIN 32676	0000000	00000
100mm	119mm	30 psi @ 72° F	DIN 32676	0000000	00000
125mm	155mm	30 psi @ 72° F	DIN 32676	0000000	000000
150mm	183mm	30 psi @ 72° F	DIN 32676	0000000	000000
316 Stainless Steel with Wing Nut
10mm	34mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
15mm	34mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
20mm	50.5mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
25mm	50.5mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
32mm	64mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
40mm	64mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
50mm	91mm	360 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
65mm	106mm	360 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
80mm	119mm	230 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000

Gaskets and O-Rings

The temperature rating of the fitting will vary depending on the gasket or O-ring material you choose. Buna-N gaskets are oil resistant. EPDM gaskets or O-rings resist water and steam and work well in humid environments. Silicone gaskets withstand high temperatures. Fluoroelastomer gaskets or O-rings stand up to fuel, oil, and acid condensates. PTFE gaskets or O-rings withstand harsh chemicals, with the exception of molten alkali metal and elemental fluorine.

Gaskets
For Tube OD	ID	OD	Thick.	Width	Temp. Range, °F	Color	Specifications Met		Each
EPDM Rubber
10mm	10.200mm	34.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	00000
16mm	16.200mm	34.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
20mm	20.200mm	34.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
26mm	26.200mm	50.500mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
32mm	32.200mm	50.500mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
38mm	38.200mm	50.500mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
50mm	50.200mm	64.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
66mm	66.200mm	91.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	000000	0000
81mm	81.200mm	106.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	0000
100mm	100.200mm	119.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	00000
125mm	125.200mm	155.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	00000
150mm	150.200mm	183.000mm	0.205"	__	-50° to 275°	Black	DIN 32676	0000000	00000
O-Rings
EPDM Rubber
10mm	12.000mm	19.000mm	__	3.5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
15mm	18.000mm	25.000mm	__	3.5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
20mm	22.000mm	29.000mm	__	3.5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
25mm	28.000mm	35.000mm	__	3.5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
32mm	34.000mm	44.000mm	__	5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
40mm	40.000mm	50.000mm	__	5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
50mm	52.000mm	62.000mm	__	5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
65mm	68.000mm	78.000mm	__	5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
80mm	83.000mm	93.000mm	__	5mm	32° to 280°	Black	3-A Certified 18-00	0000000	00000
PTFE Plastic
10mm	12.000mm	19.000mm	__	3.5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
15mm	18.000mm	25.000mm	__	3.5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
20mm	22.000mm	29.000mm	__	3.5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
25mm	28.000mm	35.000mm	__	3.5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
32mm	34.000mm	44.000mm	__	5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
40mm	40.000mm	50.000mm	__	5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
50mm	52.000mm	62.000mm	__	5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
65mm	68.000mm	78.000mm	__	5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
80mm	83.000mm	93.000mm	__	5mm	32° to 280°	White	3-A Certified 18-00	0000000	00000
Viton® Fluoroelastomer Rubber
10mm	12.000mm	19.000mm	__	3.5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
15mm	18.000mm	25.000mm	__	3.5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
20mm	22.000mm	29.000mm	__	3.5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
25mm	28.000mm	35.000mm	__	3.5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
32mm	34.000mm	44.000mm	__	5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
40mm	40.000mm	50.000mm	__	5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
50mm	52.000mm	62.000mm	__	5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
65mm	68.000mm	78.000mm	__	5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000
80mm	83.000mm	93.000mm	__	5mm	32° to 300°	Black	3-A Certified 18-00	0000000	00000

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

Temperature Range: See Gaskets
Tubing:
Inch 304 Stainless Steel and Nylon Plastic: Use with welded 304/304L and 316/316L stainless steel that meets ASTM A269 or ASTM A270
Metric 304 Stainless Steel: Use with welded 304/304L and 316/316L stainless steel
316 Stainless Steel: Use with welded 316/316L Stainless Steel

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

Clamps with wing nut tighten by hand. 304 stainless steel clamps have very good corrosion resistance. 316 stainless steel clamps are more corrosion resistant than 304 stainless steel clamps. They’re 3-A certified for sanitary standards because their smooth inner finish makes it easy to remove residue, and they meet DIN 11864, which is an international standard for fitting specifications. Clamps that meet DIN 32676 adhere to international standards for sanitary quick-clamp fittings.

Clamps

304 Stainless Steel with Wing Nut

316 Stainless Steel with Wing Nut

304 Stainless Steel with Wing Nut
	For Tube OD	For Flange OD	Max. Pressure	Specifications Met		Each
2	10mm, 16mm, 20mm	34mm	90 psi @ 72° F	DIN 32676	0000000	000000
2	26mm, 32mm, 38mm	51mm	90 psi @ 72° F	DIN 32676	0000000	00000
2	50mm	64mm	50 psi @ 72° F	DIN 32676	0000000	00000
2	66mm	91mm	50 psi @ 72° F	DIN 32676	0000000	00000
2	81mm	106mm	30 psi @ 72° F	DIN 32676	0000000	00000
2	100mm	119mm	30 psi @ 72° F	DIN 32676	0000000	00000
2	125mm	155mm	30 psi @ 72° F	DIN 32676	0000000	000000
2	150mm	183mm	30 psi @ 72° F	DIN 32676	0000000	000000
316 Stainless Steel with Wing Nut
__	10mm	34mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	15mm	34mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	20mm	50.5mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	25mm	50.5mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	32mm	64mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	40mm	64mm	580 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	50mm	91mm	360 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	65mm	106mm	360 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000
__	80mm	119mm	230 psi @ 72° F	3-A Certified 63-03, DIN 11864	0000000	00000

Gaskets

The temperature rating of the fitting will vary depending on the gasket material you choose. Buna-N gaskets are oil resistant. EPDM gaskets resist water and steam and work well in humid environments. Silicone gaskets withstand high temperatures. Fluoroelastomer gaskets stand up to fuel, oil, and acid condensates. PTFE gaskets withstand harsh chemicals, with the exception of molten alkali metal and elemental fluorine.

EPDM Rubber
	For Tube OD	ID	OD	Thick.	Temp. Range, °F	Color	Specifications Met		Each
2	10mm	10.200mm	34.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	00000
2	16mm	16.200mm	34.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	20mm	20.200mm	34.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	26mm	26.200mm	50.500mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	32mm	32.200mm	50.500mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	38mm	38.200mm	50.500mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	50mm	50.200mm	64.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	66mm	66.200mm	91.000mm	0.205"	-50° to 275°	Black	DIN 32676	000000	0000
2	81mm	81.200mm	106.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	0000
2	100mm	100.200mm	119.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	00000
2	125mm	125.200mm	155.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	00000
2	150mm	150.200mm	183.000mm	0.205"	-50° to 275°	Black	DIN 32676	0000000	00000

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How to Identify and Measure Fittings

High-Polish Metal Quick-Clamp Sanitary Tube Fittings

Clamps for High-Polish MetalQuick-Clamp Sanitary Tube Fittings

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