STESquare tube expander connectors

Square tube expander connectors

Technopolymer

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Square tube expander connectors
Square tube expander connectors

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Catalogue
Description
B
h
h1
h2
s
External tube diameter
Internal tube diameter
Thickness
430201
STE.20x1.0-M6
18
42
12
32
10
20
18
1
10
430203
STE.20x1.0-M8
18
43
10
30
13
20
18
1
9
430205
STE.20x1.5-M6
17
42
12
32
10
20
17
1.5
10
430207
STE.20x1.5-M8
17
42
10
30
13
20
17
1.5
8
430209
STE.20x2.0-M8
16
43
10
30
13
20
16
2
7
430215
STE.22x1.5-M6
19
41
12
32
10
22
19
1.5
12
430217
STE.22x1.5-M8
19
42
10
30
13
22
19
1.5
10
430223
STE.25x1.5-M8
22
42
10
30
13
25
22
1.5
14
430225
STE.25x1.5-M10
22
42
10
30
17
25
22
1.5
12
430227
STE.25x2.0-M8
21
43
10
30
13
25
21
2
7
430233
STE.30x1.5-M10
27
42
10
30
17
30
27
1.5
23
430235
STE.30x2.0-M8
26
41
10
30
13
30
26
2
20
430237
STE.30x2.0-M10
26
41
10
30
17
30
26
2
20
430241
STE.35x2.0-M10
31
42
10
30
17
35
31
2
27
430251
STE.40x1.2-M10
37.6
40
10
30
17
40
37.6
1.2
41
430253
STE.40x1.2-M12
37.6
40
8
28
19
40
37.6
1.2
39
430255
STE.40x2.0-M10
36
42
10
30
17
40
36
2
37
430257
STE.40x3.0-M8
34
42
11
30
13
40
34
3
35
430259
STE.40x3.0-M10
34
41
10
30
17
40
34
3
32
The drawing shows the assembled connector. The two technopolymer pieces composing it may have different shapes depending on the dimensions and / or executions.

Material

Polyamide based (PA) technopolymer, black colour, matte finish.

Features and applications

The two connector parts are connected together by means of pins which are housed in special counter-seats. Two cavities inside the connector are provided for housing an hexagonal-head screw or an hexagonal nut. Thanks to the tapered shape of the cavity, the connector exerts a pressure on the inner walls of the tube, due to the tightening of the screw or of the nut, thus ensuring the tensile strength of the connection. The level of the tensile strength depends on the tube dimensional tolerances, the roughness of the tube inner surfaces and the tightening torque applied. The connector has no collar and allows the joining of square tubes to other elements.

The assembly can be performed simply by positioning the connector inside the tube, with no need of screws or other fasteners.

Assembly of the tube to the connector

It can be made as an alternative with:

  • Hexagonal-head screw DIN 933 of dimension as shown in the table.
  • Hexagonal nut DIN 934 of dimension as shown in the table.
  • Self-locking hexagonal nut DIN 985 of dimension as shown in the table.

Special executions on request

Connector assembled with nut or screw.

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