Inch and Metric Size, Round or Square, Aluminum
Construction Tubings
For Tube Clamp Connectors
GN 990-AL



RoHS Compliant



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Specification
Information

Construction tubing:
Aluminum, plain finish, untreated
Aluminum, clear anodized

Sawed end surfaces untreated, but deburred


The tolerances specified for the outside diameter of the round construction tubings comply with the requirements for split mono-block connector clamps. Inch tubing complies with EN 754 and EN 755. Metric tubing complies with DIN 2391, DIN 2395 and DIN 2462.
Two-piece connector clamps obviously allow larger tolerances on round and square construction tubings.
Other lengths of tubing, in 1 in. increments up to 96 in., also available upon request.
For end plugs, see WN 991 (inch size) and GN 991 (metric size).

 
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Inch Table - Round Type

Dimensions in:

inches
(millimeters)

Part Number
d1
Diameter (D)
Length l
+/-0.02 in.
d2
w1
Aluminum,
Plain Finish

Aluminum,
Anodized

.500
(12.7)
12.0
(304.8)
.384
(9.7)
.058
(1.5)
.625
(15.9)
.509
(12.9)
.058
(1.5)
.750
(19.1)
.634
(16.1)
.058
(1.5)
1.000
(25.4)
.834
(21.2)
.083
(2.0)
1.250
(31.8)
1.084
(27.5)
.083
(2.0)
1.500
(38.1)
1.334
(33.9)
.083
(2.0)
1.750
(44.5)
1.510
(38.4)
.120
(3.0)
2.000
(50.8)
1.688
(42.9)
.156
(4.0)
2.500
(63.5)
2.188
(55.6)
.156
(4.0)
.500
(12.7)
36.0
(914.4)
.384
(9.7)
.058
(1.5)
.625
(15.9)
.509
(12.9)
.058
(1.5)
.750
(19.1)
.634
(16.1)
.058
(1.5)
1.000
(25.4)
.834
(21.2)
.083
(2.0)
1.250
(31.8)
1.084
(27.5)
.083
(2.0)
1.500
(38.1)
1.334
(33.9)
.083
(2.0)
1.750
(44.5)
1.510
(38.4)
.120
(3.0)
2.000
(50.8)
1.688
(42.9)
.156
(4.0)
2.500
(63.5)
2.188
(55.6)
.156
(4.0)
.500
(12.7)
72.0
(1828.8)
.384
(9.7)
.058
(1.5)
.625
(15.9)
.509
(12.9)
.058
(1.5)
.750
(19.1)
.634
(16.1)
.058
(1.5)
1.000
(25.4)
.834
(21.2)
.083
(2.0)
1.250
(31.8)
1.084
(27.5)
.083
(2.0)
1.500
(38.1)
1.334
(33.9)
.083
(2.0)
1.750
(44.5)
1.510
(38.4)
.120
(3.0)
2.000
(50.8)
1.688
(42.9)
.156
(4.0)
2.500
(63.5)
2.188
(55.6)
.156
(4.0)
.500
(12.7)
98.4
(2499.4)
.384
(9.7)
.058
(1.5)
.625
(15.9)
.509
(12.9)
.058
(1.5)
.750
(19.1)
.634
(16.1)
.058
(1.5)
1.000
(.25.4)
.834
(21.2)
.083
(2.0)
1.250
(31.8)
1.084
(27.5)
.083
(2.0)
1.500
(38.1)
1.334
(33.9)
.083
(2.0)
1.750
(44.5)
1.510
(38.4)
.120
(3.0)
2.000
(50.8)
1.688
(42.9)
.156
(4.0)
2.500
(63.5)
2.188
(55.6)
.156
(4.0)
 
Metric Table - Round Type

Dimensions in:

millimeters
(inches)

Part Number
d1
Diameter (D)
Length l
+/-0.5 mm
d2
w1
Aluminum,
Plain Finish

Aluminum,
Anodized

10
(.39)
300
(11.81)
7
(.28)
1.5
(.06)
12
(.47)
9
(.35)
1.5
(.06)
14
(.55)
11
(.43)
1.5
(.06)
15
(.59)
12
(.47)
1.5
(.06)
16
(.63)
13
(.51)
1.5
(.06)
18
(.71)
15
(.59)
1.5
(.06)
20
(.79)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
32
(1.26)
28
(1.10)
2
(.08)
35
(1.38)
31
(1.22)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
42
(1.65)
36
(1.42)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
48
(1.89)
42
(1.65)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
60
(2.36)
47
(1.85)
4
(.16)
10
(.39)
1000
(39.37)
7
(.28)
1.5
(.06)
12
(.47)
9
(.35)
1.5
(.06)
14
(.55)
11
(.43)
1.5
(.06)
15
(.59)
12
(.47)
1.5
(.06)
16
(.63)
13
(.51)
1.5
(.06)
18
(.71)
15
(.59)
1.5
(.06)
20
(.79)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
32
(1.26)
28
(1.10)
2
(.08)
35
(1.38)
31
(1.22)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
42
(1.65)
36
(1.42)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
48
(1.89)
42
(1.65)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
60
(2.36)
47
(1.85)
4
(.16)
10
(.39)
2000
(78.7)
7
(.28)
1.5
(.06)
12
(.47)
9
(.35)
1.5
(.06)
14
(.55)
11
(.43)
1.5
(.06)
15
(.59)
12
(.47)
1.5
(.06)
16
(.63)
13
(.51)
1.5
(.06)
18
(.71)
15
(.59)
1.5
(.06)
20
(.79)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
32
(1.26)
28
(1.10)
2
(.08)
35
(1.38)
31
(1.22)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
42
(1.65)
36
(1.42)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
48
(1.89)
42
(1.65)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
60
(2.36)
47
(1.85)
4
(.16)
10
(.39)
2500
(98.4)
7
(.28)
1.5
(.06)
12
(.47)
9
(.35)
1.5
(.06)
14
(.55)
11
(.43)
1.5
(.06)
15
(.59)
12
(.47)
1.5
(.06)
16
(.63)
13
(.51)
1.5
(.06)
18
(.71)
15
(.59)
1.5
(.06)
20
(.79)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
32
(1.26)
28
(1.10)
2
(.08)
35
(1.38)
31
(1.22)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
42
(1.65)
36
(1.42)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
48
(1.89)
42
(1.65)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
60
(2.36)
47
(1.85)
4
(.16)
 
Metric Table - Square Type

Dimensions in:

millimeters
(inches)

Part Number
s1
Diameter (V)
Length l
+/-0.5 mm
s2
w2
Aluminum,
Plain Finish

Aluminum,
Anodized

20
(.79)
300
(11.81)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
20
(.79)
1000
(39.37)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
20
(.79)
2000
(78.7)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)
20
(.79)
2500
(98.4)
16
(.63)
2
(.08)
25
(.98)
21
(.83)
2
(.08)
30
(1.18)
26
(1.02)
2
(.08)
40
(1.57)
34
(1.34)
3
(.12)
45
(1.77)
39
(1.54)
3
(.12)
50
(1.97)
44
(1.73)
3
(.12)