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Compression Fittings（Related Components, Shapes, Types：Nuts）

Compression fitting is the general term for a pipe used to indirectly help connect one part to another. Compression fittings also have names such as joints and connectors. They are used to connect pipes and hoses. There are types that enable single-action attachment of the fitting end. They are known by names such as quick couplings. Black screw-in fittings are often used in standard pipes. Stainless steel fittings are highly corrosion-resistant, suitable for outdoor use. Fittings with inserts improve part strength and durability. Besides stainless steel, compression fittings are made of materials such as brass and alloys (65% copper and 35% zinc). The right compression fitting for the application should be selected by considering factors such as material, shape and type.

12 items

: 30; 45; 60

Days to Ship	All Same day 3 Days or Less 6 Days or Less 7 Days or Less 8 Days or Less 9 Days or Less 10 Days or Less 11 Days or Less 12 Days or Less 13 Days or Less

Nut with Guard Wire - Union, Compression Fittings, UNG Series

Junkosha

Conforms to Japanese Industrial Standards JIS B8381 "Pneumatic Fittings." Allows for reliable connections because the mechanism takes the tube insert and clamps onto it with the sleeve and the cap nut. With collar thread seal for each R (PT) thread size.

Volume Discount
Days to Ship: 12 Days or more
Nut - Compression Fittings, Spatter Resistant, Brass, NKN Series

Nihon Pisco

Special brass is used for the metal body. Corrosion resistance to water is greatly improved. *The CAD data for this series is being revised. This will be available as soon as modifications are complete.

Volume Discount
Days to Ship: 13 Days or more
Cap Nut - Compression Fittings, Brass, UN Series

Junkosha

Conforms to Japanese Industrial Standards JIS B8381 "Pneumatic Fittings." Allows for reliable connections because the mechanism clamps onto the tube insertwith the sleeve and the cap nut. With collar thread seal for each R (PT) thread size.

Volume Discount

CAD ：

2D
Days to Ship: 8 Days or more
Nut - Chemifit, CP Series【5 Pieces Per Package】

Nitta

Injection-molded for a smooth interior. Also, it excels in minimizing dust and vision. A special polypropylene resin is used as a base material.

Volume Discount

CAD ：

2D
Days to Ship: 8 Days or more
Cap - Compression Fittings, 316SS, NSN Series

Nihon Pisco

All parts made of SUS316 for excellent corrosion resistance. * The CAD data for this series is being revised. This will be available as soon as modifications are complete.

Volume Discount

CAD ：

2D
Days to Ship: 13 Days or more
Nut - Quick Seal, Brass, N Series【1-20 Pieces Per Package】

Nitta

A brass nut with integrated body, nut, and sleeve. The fitting body and insert are integrated. Provides excellent performance at negative pressures.

Volume Discount

CAD ：

2D
Days to Ship: 8 Days or more
Nut - Quick Seal, 304SS, N Series

Nitta

Consists of three parts: a stainless steel nut/fitting main body, a nut, and a sleeve.

[Features]
· Screw-in type.
· A fitting main body, nut, and sleeve three-piece type.
· Demonstrates a strong sealing performance.
· The fitting main body and insert are integrated.
· A fitting with a superior negative-pressure performance.
· Made of SUS304. Therefore, it is strongly resistant to corrosion.
· A product that is compliant with JIS B 8381-1995 (Pneumatic system -- Flexible tubes -- Tube fittings).

Volume Discount

CAD ：

2D
Days to Ship: 7 Days or more
Nut - Assembly, Chemifit, CSA Series【5 Pieces Per Package】

Nitta

The insert is integrated with the fitting unit, and sleeves are built into the assembly nuts, enabling the reuse of both components. Moreover, excellent durability is achieved by adopting the manufacturer's unique sealed structure.

[Features]
· A screw-in type fitting made of SUS316.
▪ Consists of two parts: assembly nut and a fitting unit that use the manufacturer's own unique structure.
· Greatly improves usability in terms of mounting and removing tubes.
▪ The fitting unit and insert are integrated. Sleeves are built in to the assembly nuts.
▪ The fitting unit and assembly nut both can both be reused.
· Uniform tube attachment.
Tubes are connected when the assembly nut reaches the fitting unit. No need for torque control or special tools.
▪ The sleeves inside the assembly nuts can rotate and as such the tube does not.
· A completely oil-free product.
▪ Assembled after cleaning each part in a clean room.
▪ The manufacturer's original sealing structure offers high durability against any degradation to sealing performance in cold and hot cycles.
▪ The structure succumbs to little in the way of stress relaxation, ensuring a high sealing performance over long periods of time and ensuring that the nut does not need to be re-tightened during maintenance.
▪ The surface coarseness is Ra3.2 or less. The 90° corner of the elbow has been made smooth and rounded, reducing the amount of liquid and detergent that remains.
▪ Prevents the fitting unit and assembly nut from seizing when a tube is inserted.

Volume Discount

CAD ：

2D
Days to Ship: 10 Days or more
Insert Fittings KF Series, Union Nut KFN【10 Pieces Per Package】

SMC

A swivel-type union nut.

Volume Discount

CAD ：

2D / 3D
Days to Ship: 3 Days
SUS316 Insert Fittings KFG2 Series, Union Nut KFG2N【2 Pieces Per Package】

SMC

[Features]
· Compact, lightweight.
· Grease-free.
· Can be used with steam.
· Conforms to the Food Sanitation Act of Japan.
[Please refer to the following pages of the catalog]
Applicable tube outer diameter, metric p. 326; inch p. 331

Volume Discount

CAD ：

2D / 3D
Days to Ship: Quote
Nut - Compression Fittings, Zinc-Plated Steel

USA Industrials

Nut Compression fittings have a single sleeve which bites into tubing as you tighten the nut to create a strong seal. Zinc-plated steel is strong and has fair corrosion resistance.

Days to Ship: 13 Days
Nut - Compression Fittings, N0318 Series

Brennan Industries

Brennan's Instrumentation Tube Fittings provide leak-proof, torque-free seals at all tubing connections. Brennan's Double-Ferrule and Single-Ferrule Tube Fittings are reusable several times and can withstand heavy impulse and vibration in both vacuum and pressure systems Exhaustive tests have proven that the tubing will yield before a Brennan Double-Ferrule joint starts leaking.

Brennan Instrumentation Tube Fitting Features:
· Self-aligning
· Work on thick and thin wall tubing
· Resist vibration
· Work on a variety of tube materials
· All components are made of the same material for thermal compatibility and corrosion resistance
· Resist temperature cycling
· Compensate for the variables encountered in the tube and materials
· Do not significantly reduce flow area

Performance
· Work in vacuums, as well as at low and high pressures
· Seal at low cryogenic temperatures, as well as elevated temperatures rated for the tube
· Seal consistently over a wide range of temperature cycling
· Seal repeatedly under both make and remake conditions
· Resist pressure beyond the tubing burst point

Assembly
· Use geometry rather than torque for uniformity of make-up. (To complete the joint, it requires only a 1-1/4 turn after snug-tightening.)
· Do not require disassembly and inspection of ferrule swaging at every make-up
· Do not require any special tools for assembly

Days to Ship: 11 Days

Days to Ship:	12 Days or more

Days to Ship:	13 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	13 Days or more

Days to Ship:	8 Days or more

Days to Ship:	7 Days or more

Days to Ship:	10 Days or more

Days to Ship:	3 Days

Days to Ship:	Quote

Days to Ship:	13 Days

Days to Ship:	11 Days


Brand
Product Series
CAD
Days to Ship
Connection Types
Thread-to-Tube Connection Shape
Tube-to-Tube Connection Shape
Thread-to-Tube Multipoint Connection Shape
Related Components, Shapes, Types
Material
Surface Treatment
Thread Types
Thread Size 1
Thread Size 2
Tube Size 1
Tube Size 2
Tube Inner Dia.(mm)
Tube Inner Dia. at the Smaller Dia. Section(mm)


Brand	Junkosha	Nihon Pisco	Junkosha	Nitta	Nihon Pisco	Nitta	Nitta	Nitta	SMC	SMC	USA Industrials	Brennan Industries
Product Series	Nut with Guard Wire - Union, Compression Fittings, UNG Series	Nut - Compression Fittings, Spatter Resistant, Brass, NKN Series	Cap Nut - Compression Fittings, Brass, UN Series	Nut - Chemifit, CP Series【5 Pieces Per Package】	Cap - Compression Fittings, 316SS, NSN Series	Nut - Quick Seal, Brass, N Series【1-20 Pieces Per Package】	Nut - Quick Seal, 304SS, N Series	Nut - Assembly, Chemifit, CSA Series【5 Pieces Per Package】	Insert Fittings KF Series, Union Nut KFN【10 Pieces Per Package】	SUS316 Insert Fittings KFG2 Series, Union Nut KFG2N【2 Pieces Per Package】	Nut - Compression Fittings, Zinc-Plated Steel	Nut - Compression Fittings, N0318 Series
CAD			2D	2D	2D	2D	2D	2D	2D / 3D	2D / 3D
Days to Ship	12 Days or more	13 Days or more	8 Days or more	8 Days or more	13 Days or more	8 Days or more	7 Days or more	10 Days or more	3 Days	Quote	13 Days	11 Days
Connection Types	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components	Related Components
Thread-to-Tube Connection Shape	-	-	-	-	-	-	-	-	-	-	-	-
Tube-to-Tube Connection Shape	-	-	-	-	-	-	-	-	-	-	-	-
Thread-to-Tube Multipoint Connection Shape	-	-	-	-	-	-	-	-	-	-	-	-
Related Components, Shapes, Types	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts	Nuts
Material	Copper	Copper	Copper	Plastic	Stainless Steel	Copper	Stainless Steel	Stainless Steel	Copper	-	Steel	Stainless Steel
Surface Treatment	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	-	-	Not Provided
Thread Types	-	-	-	-	-	M	M	-	-	-	-	-
Thread Size 1	-	-	-	-	-	M6 ～ M22	M10 ～ M17	-	-	-	-	-
Thread Size 2	-	-	-	-	-	-	-	-	-	-	-	-
Tube Size 1	6 mm ～ 10 mm	4 mm ～ 16 mm	4 mm ～ 16 mm	4 ～ 12	4 mm ～ 16 mm	3.18 ～ 16	6 ～ 12	6 ～ 12	-	8 ～ 12	-	1" ～ 5/8"
Tube Size 2	-	-	-	-	-	-	-	-	-	-	-	-
Tube Inner Dia.(mm)	-	-	-	-	2 ～ 13	-	-	-	-	-	-	2.4mm ～ 22.3mm
Tube Inner Dia. at the Smaller Dia. Section(mm)	-	-	-	-	-	-	-	-	-	-	-	-

Configure

Specification/Dimensions

Connection Types
- Thread to Tube Connection
- Thread to Tube Multipoint Connection
- Tube to Tube Equal Dia. Connection
- Tube to Tube Stepped Dia. Connection
- Pipe to Tube Connection
- Related Components
Clear

Thread-to-Tube Connection Shape
- Elbows
- Male Straight
- Female Straight
- Male Elbow
- Female Elbow
Clear

Tube-to-Tube Connection Shape
- Straight
- Elbows
- Tees
- Cross
- Partition Unions
Clear

Thread-to-Tube Multipoint Connection Shape
- Tees
- Manifolds
Clear

Related Components, Shapes, Types
- Caps
- Plugs
- Gaskets
- Nuts
- Bushings
- Sockets
- Sleeves
- Inserts
- Other Related Components
Clear

Material
Brass

Copper

Plastic

Stainless Steel

Steel
Clear

Surface Treatment
Nickel Plating

Not Provided
Clear

Thread Types
S(SAE J514)

G

IKOU

M

NPT

R

Rc

UNF
Clear

Metric / Inch
- metric
Clear

Thread Size 1
1/16"

1/8"

1/4"

3/8"

1/2"

5/8"

3/4"

1"

1/2

1/4

1/4B(8A)

1/8

1/8B(6A)

3/8

M10

M12

M14

M15

M17

M22

M6

M8
Clear

Thread Size 2
1/4"

3/8"

1/2"

3/4"
Clear

Tube Size 1
1/16"

1/8"

3/16"

1/4"

5/16"

3/8"

1/2"

5/8"

3/4"

7/8"

1"

1/"4

1/4" x 10mm

1/4" x 12mm

1/4" x 4mm

1/4" x 6mm

10

10 mm

10mm

12

12 mm

12.7

12.7 mm

12.70 mm

12mm

14mm

15.88

16

16 mm

21

3.18

3.18 mm

3mm

4

4 mm

4.76

4.76 mm

4mm

6

6 mm

6.35

6.35 mm

6mm

7.94

7.94 mm

8

8 mm

8mm

9

9 mm

9.53

9.53 mm
Clear

Tube Size 2
1/16"

1/8"

3/16"

1/4"

5/16"

3/8"

1/2"

5/8"

3/4"

7/8"

1"
Clear

Tube Inner Dia.(mm)
1.3mm

1.65

2

2.1

2.18

2.2

2.3

2.36

2.4

2.4mm

2.5

3

3.mm

3.48

3.95

3.96

4

4.5

4.57

4.8mm

5

5.9

6

6.3mm

6.35

6.5

6.99

7.1mm

7.5

7.6

7.7

7.8

7.9

8

9

9.53

9.56

9.9mm

10

11

12

12.7mm

13

15.8mm

16

18.2mm

22.3mm
Clear