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Tube Connectors

Available in a variety of thread sizes and for almost any tubing size, Carpin Tube Connectors are the perfect solution for connecting tubing to to other tubing or to virtually anything.  These tube connectors push into the end of the tube and because of their tapered spring clip design they aggressively resist removal. The holding strength of the tube connectors to a tube varies depending on the size and tube material, but it is not uncommon for these products to hold well over 1000 lbs. of static axial pull force. They are easy to install- best if done with a press that can keep the tube connector in line, axially with the tube, but they can also can be installed with a mallet.  The threaded steel nut accepts threaded rod or a bolt and is used to tighten the connector, and the tube it is attached to, to another tube or a plate or a bracket.  They simply do the job well.  Make tube connectors are made with a threaded stud instead of a nut and eliminate the need to use a separate nut or bolt.  These insert into the tube in the same way, have the same holding power, but make it easier to assemble the mating member.  Additionally, to eliminate the costly labor intensive process of fish-mouthing or welding, Carpin's patented expansion connectors are perfect for joining tubing in a T-style joint.  Whether the application is in furniture, shelving, display racks, RV ladders, ductwork and duct support rods including electrical conduit tubing, Carpin has the tube connector for your application.  If you do not see it here please call or e-mail us and our customer service team will help you find the right tube connector for your application. 


heavy duty tube connectors - round Tube Connectors, Heavy Duty, Square

HEAVY DUTY
TUBE CONNECTORS

TUBE CONNECTORS -- SERIES: 110

TUBE SIZE
(fits round or square tube)

WALL THICKNESS

THREAD

 5/8" 

19 GA

 25 GA


1/4-20

10-24
 

3/4"  

16-18 GA

 20-22 GA


10-24

1/4-20

5/16-18

M6 X 1.0
 

7/8"

16-18 GA


10-24 

1/4-20

5/16-18

M6 X 1.0

 3/8-16
 

1"

16-18 GA

 20-22 GA


10-24

1/4-20

5/16-18

M6 X 1.0

1/8-27

3/8-16
 

1" (square only)

18-20 GA


10-24

1/4-20

5/16-18

M6 X 1.0
 

1-1/8"


12-14 GA

16-18 GA

20-22 GA
 

10-24

1/4-20

5/16-18

M6 X 1.0

1/8-27

3/8-16

1-1/4"


16-18 GA

20-22 GA
 

1-5/16"


15 GA

16-18 GA
 

1-3/8" 


16-18 GA

20-22 GA
 

1-1/2"

1-5/8"

16-18 GA

1-3/4"

2"


11-12 GA

14-16 GA

16-18 GA
 

Custom threads are available upon request. 

All tube connectors are spring tempered and rust-inhibited.

 

Tube Connectors, Male for electrical conduit Tube Connectors, male, Heavy duty

MALE HEAVY DUTY
TUBE CONNECTORS

TUBE CONNECTORS -- SERIES: 112

TUBE SIZE
(fits round or square tube)

WALL THICKNESS

THREAD

3/4"  

16-18 GA

 20-22 GA

1/4-20

7/8"

16-18 GA

1/4-20

1"

16-18 GA

 20-22 GA


1/4-20

5/16-18

3/8-16
 

1-1/8"


12-14 GA

16-18 GA

20-22 GA
 


1/4-20

5/16-18

3/8-16
 

1-1/4"


16-18 GA

20-22 GA
 

1-5/16"


15 GA

16-18 GA
 

1-3/8" 


16-18 GA

20-22 GA
 

1-1/2"

1-5/8"

16-18 GA

1-3/4"

2"


11-12 GA

14-16 GA

16-18 GA
 


Custom threads are available upon request. 

All tube connector spring clips are spring tempered and rust-inhibited.
Threaded stems are zinc plated.

tube connectors, Light duty

LIGHT DUTY
TUBE CONNECTORS

TUBE CONNECTORS -- SERIES: 550

TUBE SIZE
(fits round or square tube)

WALL THICKNESS

THREAD

5/8"


16-18 GA
 
 10-24

3/4" 


16-18 GA

20-22 GA
 

10-24

1/4-20

13/16" 

16-18 GA

7/8"

1" 


16-18 GA

13 GA

20-22 GA
 

1-1/4" 


16-18 GA
 

All tube connectors are spring tempered and rust-inhibited.

 

Tube connectors- Expansion Connector Tube connector- Expansion Connector

HEAVY DUTY
EXPANSION
T-CONNECTORS

Series 114: 7/8" to 1"@ 5 offset w/(1) clip & (1) nut shown

Tube Connectors, Expansion, flush mount Tube Connectors, expansion flush mount

FLUSH MOUNT
EXPANSION
T-CONNECTORS

Series 117: 7/8" to 1" @ 90 w/(1) clip shown

TUBE CONNECTORS -- SERIES: 114, 117

SERIES CONNECTS
TUBING
FLUSH OR INSERTS THREAD
SIZE
MECHANICS
114 7/8" to 1"
5
OFFSET
Tube O.D inserts into expansion connector 10-24
Steel Spring Clip with a 10-24 Nut

Steel Threaded Spring Clip
 

117 7/8" to 1"
90
Tube O.D. is flush with expansion connector 10-24

Call for special applications.
Click here to find out more about our expansion connectors.