1 29/64" Air Hose | McMaster-Carr

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	Type Type

	Adapter

	Connection Style Connection Style

Quick Clamp

Gasket

	System of Measurement System of Measurement

Inch

	For Tube OD For Tube OD

1/4"

3/4"

1 1/2"

	Trade Number Trade Number

	Material Material

Stainless Steel

	Flange OD Flange OD

1.18"

1.57"

2.16"

	Shape Shape

	Straight

	Gender Gender


Male	Female

	For Tube Material For Tube Material

304/304L Stainless Steel

316/316L Stainless Steel

	Connection Type Connection Type

	Tube

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Pressure Maximum Pressure

5 psi @ 72° F

	Maximum Temperature Maximum Temperature

250° to 499° F

	Minimum Temperature Minimum Temperature

-99° to 0° F

	Maximum Vacuum Maximum Vacuum

1 × 10^-9 torr @
72° F

	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

	Specifications Met Specifications Met

ISO

	Sterilize With Sterilize With

Steam (Autoclaving)

	Vacuum Rating Vacuum Rating

High

	Length Length	Show

1 29/64"

	Length Length	Hide

	High Vacuum Connection Type High Vacuum Connection Type

ISO-KF

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37 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.

For Use With:
Fittings with Gasket End: Air, Argon, Helium, Nitrogen
All Other Fittings: Air
Temperature Range: 0° to 300° F
Tubing: Use with 304/304L or 316/316L stainless steel
Specifications Met: ISO 2861

Instead of a gasket, these fittings have a special ring that is designed for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases. Also known as KF, QF, and NW fittings, they are the most common type of connection in high-vacuum systems. Connect with a clamp and another quick-clamp fitting for fast, easy access to your line. To use fittings in pressure applications, use a pressure-rated ring (sold separately).

304 stainless steel fittings have very good corrosion resistance.

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

Straight Adapters, Tube × Male Gasket Tube

Fittings with gasket end connect with a stainless steel gasket (sold separately) instead of a rubber one, generating fewer particles to create a stronger high-vacuum seal. Their interior is ultra-smooth to attract fewer contaminants. These adapters are commonly used to add gases such as helium, argon, or nitrogen into high-vacuum systems. Also known as VCR fittings.

Quick-Clamp Tube Connection
For Tube OD	Flange OD	Trade Number	High Vacuum Connection Type	For Tube OD (Gasket)	Max. Vacuum	Max. Pressure	Compatible With		Each
3/4"	1.18"	16	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	000000
1"	1.57"	25	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	00000
1 1/2"	2.16"	40	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	00000

Gasket for 1/4" Tube OD (Gasket End)

0000000

Each

00000

Straight Adapters, Tube × Female Gasket Tube

Quick-Clamp Tube Connection
For Tube OD	Flange OD	Trade Number	High Vacuum Connection Type	For Tube OD (Gasket)	Max. Vacuum	Max. Pressure	Compatible With		Each
3/4"	1.18"	16	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	000000
1"	1.57"	25	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	00000
1 1/2"	2.16"	40	ISO-KF	1/4"	1 × 10 ^-9 torr @ 72° F	5 psi @ 72° F	Swagelok® VCR	00000000	00000

Gasket for 1/4" Tube OD (Gasket End)

0000000

Each

00000

Clamps

Clamp with Wing Nut

Spring-Loaded Clamp

Clamps tighten by hand. Spring-loaded clamps are also known as toggle clamps.

with Wing Nut
For Tube OD	For Flange OD	Trade Number	High Vacuum Connection Type	Material	Max. Vacuum	Lanyard Length		Each
1/2", 3/4"	1.18"	10, 16	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	00000000	00000
1"	1.57"	25	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	0000000	00000
1 1/2"	2.16"	40	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	0000000	00000
Spring Loaded
1/2", 3/4"	1.18"	10, 16	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	0000000	00000
1"	1.57"	25	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	0000000	00000
1 1/2"	2.16"	40	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	__	0000000	00000
Spring Loaded with Lanyard
3/4"	1.18"	16	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	5 3/4"	00000000	00000
1"	1.57"	25	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	5 3/4"	00000000	00000
1 1/2"	2.16"	40	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	5 3/4"	00000000	00000

Rings

Ring

Ring with Stainless Steel Screen

Ring with Aluminum Outer Ring

Use these rings with quick-clamp high-vacuum fittings. They consist of a stainless steel inner ring covered by a fluoroelastomer O-ring.

Rings
For Tube OD	For Flange OD	Trade Number	High Vacuum Connection Type	Inner Ring Material	Max. Vacuum	Max. Pressure		Each
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	00000000	00000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	0000000	0000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	0000000	00000
Rings with Stainless Steel Screen
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	00000000	00000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	00000000	00000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	00000000	00000
Rings with Aluminum Outer Ring
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	Not Rated	00000000	00000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	100 psi @ 72° F	0000000	00000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	75 psi @ 72° F	0000000	00000

Hose

Rigid Hose

Flexible Hose

Hose absorbs moderate vibration

3 3/16" Lg.
For Tube OD	Flange OD	Trade Number	High Vacuum Connection Type	Material	Max. Vacuum	Bend Radius	Flexibility		Each
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	__	Rigid	0000000	000000
4 3/16" Lg.
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	__	Rigid	0000000	00000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	__	Rigid	0000000	000000
12" Lg.
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 5/8"	Flexible	00000000	000000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 3/8"	Flexible	00000000	000000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	2 1/2"	Flexible	00000000	000000
24" Lg.
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 5/8"	Flexible	00000000	000000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 3/8"	Flexible	00000000	000000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	2 1/2"	Flexible	00000000	000000
39" Lg.
3/4"	1.18"	16	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 5/8"	Flexible	00000000	000000
1"	1.57"	25	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	1 3/8"	Flexible	00000000	000000
1 1/2"	2.16"	40	ISO-KF	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	2 1/2"	Flexible	00000000	000000

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How to Identify and Measure Fittings

Quick-Clamp High-Vacuum Fittings for Stainless Steel Tubing