< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
Metal sheet preparation
Hole diameter
Cylindrical, hexagonal and thin heads: |
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| Hole Ø |
4.2 |
5.4 |
7.1 |
8.75 |
| Threaded (Ø M) |
M 2 / M 2.5 / M 3 |
M 2.5 G / M 3 G / M 3.5 |
M 4 / M 5 |
M 6 |
| Bearing (Ø int) |
3.1 |
3.1 / 3.6 |
3.6 / 4.1 / 5.1 |
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| Snap-on |
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● |
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| Lockable |
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● |
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dimensions: mm (tolerance provided in the data sheets) |
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Concealed heads:
To install concealed head standoffs, it is necessary to carry out spot facing in compliance with the characteristics for diameter and depth given below.
The minimum thickness of the metal sheet is 1.5 mm or 2.5 mm, depending on the height of the shank (short or long). |
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| Threaded |
M |
M 2.5 |
M 3 |
M 4 |
M 5 |
M 6 |
| Ø of spot facing |
|
5.4 |
5.4 |
7.9 |
8.75 |
9.9 |
| Depth P |
Short |
1.1 |
1.1 |
1.1 |
1.1 |
1.1 |
| Long |
1.9 |
1.9 |
1.9 |
1.9 |
1.9 |
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dimensions: mm (tolerance provided in the data sheets) |
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Preparation process |
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- Punching
- Drilling
- Laser cutting
- Water jet cutting |
 Strain-hardened zone
 Cutting zone
 Rupture zone
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These four processes can be used to create the hole destined to receive the SPACERFIX™. Quality of preparation is, however, of overriding importance in guaranteeing optimal clinching which will result in high mechanical resistance.
Use of a precision-sharpened punch is, for example, recommended - in order to limit strain-hardening of the hole and minimize the rupture zone. |
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< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
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Preparation of the workpiece to be assembled
Ø T2 Hole diameter
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| Ø M |
M 2 |
M 2.5 |
M 3 |
M 3.5 |
M 4 |
M 5 |
M 6 |
M 8 |
M 10 |
| Ø T2 min |
2.1 |
2.6 |
3.1 |
3.6 |
4.1 |
5.1 |
6.1 |
8.1 |
10.1 |
| Ø T2 max |
3.1 |
3.35 |
3.6 |
4.45 |
5.55 |
6.05 |
7.37 |
9.25 |
12 |
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< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
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Recommendation on the location of holes |
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In order to guarantee optimal clinching, and to avoid any deformation of the sheet liable to adversely affect the SPACERFIX™ bond, compliance is recommended with the distances (shown in the table below) between:
- two punched holes (Dt)
- the edge of the metal sheet and the punching axis (Db)
- the punching axis and the start of the bend radius (Dp) |
|
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| Threaded : Ø M |
M 2 |
M 2.5 |
M 2.5 G |
M 3 |
M 3 G |
M 3.5 |
M 4 |
M 5 |
M 6 |
| Bearing : Ø int |
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|
|
3.1 |
3.1 |
3.6 |
3.6 / 4.1 |
5.1 |
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| Snap-on - Lockable |
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● |
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| Ø T |
4.2 |
4.2 |
5.4 |
4.2 |
5.4 |
5.4 |
7.1 |
7.1 |
8.75 |
| Dt |
8.8 |
8.8 |
10.5 |
8.8 |
10.5 |
10.5 |
12.5 |
12.5 |
15.2 |
| Db |
5.2 |
5.2 |
5.8 |
5.2 |
5.8 |
5.8 |
7.0 |
7.0 |
7.6 |
| Dp (ep ≤ 3 mm) |
5.5 |
5.5 |
6.0 |
5.5 |
6.0 |
6.0 |
7.1 |
7.1 |
7.7 |
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Because the values depend on the grade of the workpiece material, they are given as guidelines only. For applications requiring installation beyond the values recommended above, LA CLUSIENNE-CLUFIX offers custom-made products. |
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< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
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SPACERFIX™ installation process |
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SPACERFIX™ fitting orientation
To guarantee optimal installation and resistance of SPACERFIX™, you are recommended to always crimp the nuts from the side:
- of the punch entry (hole created by punching);
- of the burr (hole created by drilling);
- of the source (laser or water jet cutting), especially for thick workpieces.
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Installation stroke
Setting of the bottom of the press stroke position must be precise, so as to ensure insertion of the head in the metal sheet.
Depending on the grade and thickness of the metal sheet, it may be wise to respect a time delay at the stroke end in order to maintain pressure on the component so as to eliminate any springback.
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< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
Setting forces F (in daN)
Force for hexagonal head: |
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| SPACERFIX™ material |
Metal sheet material |
|
M 2 |
M 2.5 |
M 3 |
M 3.5 |
M 4 |
M 5 |
M 6 |
| Ø 4.2 |
Ø 5.4 |
Ø 4.2 |
Ø 5.4 |
| Steel |
Steel |
min
max |
1000
1400 |
1000
1400 |
1200
1800 |
1000
1400 |
1200
1800 |
1200
1800 |
1600
2800 |
1600
2800 |
2050
3350 |
| Stainless Steel or 316L |
Stainless Steel |
min
max |
1000
1400 |
1000
1400 |
1200
1800 |
1000
1400 |
1200
1800 |
1200
1800 |
1600
2800 |
1600
2800 |
2050
3350 |
| HR Stainless steel |
Strain-hardened Stainless Steel |
min
max |
- |
2500
3500 |
3000
4500 |
2500
3500 |
3000
4500 |
3000
4500 |
3500
5300 |
3500
5300 |
4000
6200 |
| Aluminium |
Aluminium |
min
max |
- |
600
850 |
700
1100 |
600
850 |
700
1100 |
700
1100 |
1000
1650 |
1000
1650 |
1200
2000 |
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| Force for bearing body shape: |
| SPACERFIX™ material |
Metal sheet material |
|
Ø int. 3.1 |
Ø int. 3.6 |
Ø int. 4.1 |
Ø int. 5.1 |
| Ø 4.2 |
Ø 5.4 |
Ø 4.2 |
Ø 5.4 |
| Steel |
Steel |
min
max |
1000
1400 |
1200
1800 |
1200
1800 |
1600
2800 |
1600
2800 |
1600
2800 |
| Stainless Steel or 316L |
Stainless Steel |
min
max |
1000
1400 |
1200
1800 |
1200
1800 |
1600
2800 |
1600
2800 |
1600
2800 |
| HR Stainless steel |
Strain-hardened Stainless Steel |
min
max |
2500
3500 |
3000
4500 |
3000
4500 |
3500
5300 |
3500
5300 |
3500
5300 |
| Aluminium |
Aluminium |
min
max |
600
850 |
700
1100 |
700
1100 |
1000
1650 |
1000
1650 |
1000
1650 |
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| Force for concealed heads: |
| SPACERFIX™ material |
Metal sheet material |
|
M 2 |
M 2.5 |
M 3 |
M 3.5 |
M 4 |
M 5 |
M 6 |
| Steel |
Steel |
min
max |
- |
1200
2000 |
1450
2400 |
- |
1700
2800 |
1800
3100 |
1950
3500 |
| Stainless Steel or 316L |
Stainless Steel |
min
max |
- |
1200
2000 |
1450
2400 |
- |
1700
2800 |
1800
3100 |
1950
3500 |
| HR Stainless steel |
Strain-hardened Stainless Steel |
min
max |
- |
2600
4300 |
3100
5100 |
- |
4000
5550 |
4300
6000 |
4750
6700 |
| Aluminium |
Aluminium |
min
max |
- |
700
1200 |
850
1450 |
- |
1000
1700 |
1100
1900 |
1200
2100 |
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| Force for snap-on or lockable body shape: |
| SPACERFIX™ material |
Metal sheet material |
|
Ø 5.4 |
| Steel |
Steel |
min
max |
1200
1800 |
| Stainless Steel or 316L |
Stainless Steel |
min
max |
1200
1800 |
| HR Stainless steel |
Strain-hardened Stainless Steel |
min
max |
3000
4500 |
| Aluminium |
Aluminium |
min
max |
700
1100 |
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These values are given as guidelines only, and the wide range of setting forces reflect the variation of mechanical characteristics among sheet metals (depending on the grade of the steel, stainless steel and aluminium) and the dimensional precision of the hole.
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< Metal sheet preparation - Workpiece preparation - Recommendation - Installation - Setting - Tooling >
|
Tooling suitable for all head shapes except concealed for clinching on thin workpieces
For metal sheet thicknesses that are equal to or below 8/10ths mm, use of a die with chamfer is recommended (see diagram below) so that the material can flow towards the groove and thus ensure SPACERFIX™ resistance. The dimensions for this chamfer are provided in the SPACERFIX™ data sheets.
This tooling also enables complete burial of the SPACERFIX™ head in the metal sheet for thicknesses up to 12/10ths. |
| Ø M |
C |
| ≤ M3 |
0.4 |
| M4 → M5 |
0.6 |
| > M5 |
0.8 |
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Specific tooling for concealed heads
To enable crimping of this type of standoff, the punch to be used must include a bore receiving the body of the standoff. The dimension of this bore matches the diameter of the standoff body + 0.2 mm. |
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Download SPACERFIX™ Technical Data pdf
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