1 5/16" Ferrules | McMaster-Carr

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Fitting Connection

System of Measurement

Inch

Tube OD

Material

304 Stainless Steel

304/304L Stainless Steel

316/316L Stainless Steel

Shape

Straight

Tube Material

304/304L Stainless Steel

316/316L Stainless Steel

Fitting Type

Adapter

Pipe Size

Connects To

Flange OD

Length

Gender

For Tube Fabrication

Environment

Fabrication

Maximum Vacuum @ Temperature

1× 10^-6 Torr @ 72° F

Not Rated

For Tube Specifications Met

Sterilize With

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Exterior Smoothness

Interior Smoothness

22 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

High-Polish Metal Quick-Clamp Sanitary Tube Fittings

Temperature Range: See Gaskets

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, 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 material you choose.

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

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

Expand-to-Connect Straight Adapters, Tube

For Use With: Air, Water
Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270

Expand-to-connect fittings are also known as nonrecess or roll-on ferrules. To connect, insert metal tubing into the fitting and use an expansion tool (sold separately) to press the tubing into the fitting wall.

		304 Stainless Steel		316/316L Stainless Steel
For Tube OD	Flange OD		Each		Each
2"	2.516"	4322K173	00000	50485K173	000000

304 Stainless Steel Clamps with Wing Nut

For Tube OD	For Flange OD	Max. Pressure	For Tube Specifications Met		Each
2"	2.654"	450 psi @ 72° F	ASTM A269, ASTM A270	4322K153	000000

304 Stainless Steel Clamps with Wing Nut, Spring Closure

For Tube OD	For Flange OD	Max. Pressure	For Tube Specifications Met		Each
2"	2.516"	450 psi @ 72° F	ASTM A269, ASTM A270	9155K13	000000

304 Stainless Steel Clamps with Bolt

For Tube OD	For Flange OD	Bolt Material	Max. Pressure	For Tube Specifications Met		Each
2"	2.71"	304 Stainless Steel	1,000 psi @ 72° F	ASTM A269, ASTM A270	4322K712	000000

304 Stainless Steel Clamps with Lever and Hole for Lockout

For Tube OD	For Flange OD	Max. Pressure	For Tube Specifications Met	Specifications Met		Each
2"	2.516"	450 psi @ 72° F	ASTM A269, ASTM A270	ASME BPE	4322K382	000000

316 Stainless Steel Clamps with Wing Nut and 2-Pin Hinge

For Tube OD	For Flange OD	Max. Pressure		Each
2"	2.516"	700 psi @ 72° F	4759K63	000000

316 Stainless Steel Clamps with Safety Wing Nut and 2-Pin Hinge

For Tube OD	For Flange OD	Max. Pressure		Each
2"	2.516"	720 psi @ 72° F	4052N21	000000

316 Stainless Steel Clamps with Double Bolt

For Tube OD	For Flange OD	Bolt Material	Max. Pressure	Specifications Met		Each
2"	2.516"	316 Stainless Steel	1,300 psi @ 72° F	ASME BPVC.VIII	4052N33	0000000

316 Stainless Steel Clamps with Recessed Nut, Hole for Lockout, and 2-Pin Hinge

For Tube OD	For Flange OD	Max. Pressure		Each
2"	2.516"	720 psi @ 72° F	4052N27	000000

White Nylon Plastic Clamps with Wing Nut

For Tube OD	For Flange OD	Max. Pressure	For Tube Specifications Met		Each
2"	2.516"	150 psi @ 72° F	ASTM A269, ASTM A270	4322K177	000000

Gaskets

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.

Buna-N Rubber
For Tube OD	ID	OD	Thick.	Temp. Range, °F	Color	Specifications Met		Each
2"	1.900"	2.520"	0.203"	-30° to 200°	Black	3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600	4509K15	00000
EPDM Rubber
2"	1.900"	2.520"	0.203"	-20° to 300°	Black	3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600	1100N15	0000
Silicone Rubber
2"	1.900"	2.520"	0.203"	-40° to 450°	Clear	3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600	4520K45	0000
Fluoroelastomer Rubber
2"	1.900"	2.520"	0.203"	-15° to 400°	Black	3-A Certified 18-03, FDA Compliant 21 CFR 177.2600	5044K55	0000
PTFE Plastic
2"	1.900"	2.520"	0.18"	-100° to 500°	White	3-A Certified 20-27, FDA Compliant 21 CFR 177.1550	43315K55	0000

Gasket Fittings—Male Straight Adapters, Gasket × Standard Tube

For Tube OD
Gasket Connection	Standard Connection	Wall Thick.	Material	For Tube Specifications Met	Includes		Each
2"	2"	0.065"	316 Stainless Steel	ASTM A269, ASTM A270	304 Stainless Steel Nut	4629N25	0000000

Gasket Fittings—Female Straight Adapters, Gasket × Standard Tube

For Tube OD
Gasket Connection	Standard Connection	Wall Thick.	Material	For Tube Specifications Met		Each
2"	2"	0.065"	316 Stainless Steel	ASTM A269, ASTM A270	4629N24	0000000

Extra-Support Fittings—Male Straight Adapters, Extra-Support Tube × Standard Tube

	Flange OD
For Tube OD	Extra-Support Connection	Standard Connection	Wall Thick.	Material	For Tube Specifications Met		Each
2"	2.64"	2.516"	0.065"	316 Stainless Steel	ASTM A269, ASTM A270	4177N13	0000000

Extra-Support Fittings—Female Straight Adapters, Extra-Support Tube × Standard Tube

	Flange OD
For Tube OD	Extra-Support Connection	Standard Connection	Wall Thick.	Material	For Tube Specifications Met		Each
2"	2.64"	2.516"	0.065"	316 Stainless Steel	ASTM A269, ASTM A270	4177N17	0000000

Butt-Weld Fittings for Stainless Steel Tubing

For Use With: See table
Temperature Range: See table
Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except ASME BPE and DIN EN 10357 fittings with only ASTM A269 or ASTM A270
Specifications Met: See table

Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.

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

Straight Adapters, Tube × Female Threaded Pipe

304/304L Stainless Steel
For Tube OD	Thread Type	Pipe Size	Max. Pressure	Max. Vacuum	Temp. Range, °F	Wall Thick.	For Use With		Each
Polished
1"	NPT	1	600 psi @ 72° F	10 ^-6 torr @ 72° F	-65° to 250°	0.065"	Air, Food, Water	44655K171	000000
316/316L Stainless Steel
Polished
1"	NPT	1	600 psi @ 72° F	10 ^-6 torr @ 72° F	-65° to 250°	0.065"	Air, Food, Water	5237K222	00000