Dodge inserts HSD and HFD are expansion system press-fi t type insert nuts for use after molding. These inserts have a knurled tip with cross slots and a compressed shape with an expansion plate on the inside.
The knurled tip is press-fi tted into a resin hole in the opposite material, and the knurled parts of the tip are spread outward by pressing the expansion plate downward with a punch so that the knurled parts press strongly into the resin. Consequently, these inserts can be used even if the boss thickness is relatively thin.
They can be used in a wide variety of applications in any material due to their use of this expansion system. |
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| Steps for use |
| Set insert into hole in opposite material |
Press-fi t |
Insert punch |
Press expansion plate downward to complete |
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Figure of punch for pressing expansion plates
For details refer to theⅠ+0.2 dimension in the tables. |
Inserting punch |
Completed insertion with tip spread open by expansion plate |
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| Precautions during use |
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| Insert will not hold when fastening soft objects such as packing material. |
Insert will not hold if hole diameter of fastened object is larger than outer diameter of insert. |
If pilot hole is deeper than insert, consider adding a step inside the pilot hole or using a fl ange type. |
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| Note: If suitable fastening strength cannot be achieved in these cases, it may still be possible to use inserts if contact surface on opposite materials is enlarged by using an insert with a larger circumference such as a fl ange type. |
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| Torque and tensile strength(Reference values) |
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Torque(N・m) |
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Tensile strength(Ｎ) |
M3
HSD-3001 |
M4
HSD-4001 |
M5
HSD-5002 |
Opposite resin |
M3
HSD-3001 |
M4
HSD-4001 |
M5
HSD-5002 |
| 1.5 |
2.5 |
3.9 |
ABS |
686 |
882 |
1,176 |
| 1.7 |
2.8 |
4.3 |
Noryl |
784 |
931 |
1,274 |
| 1.7 |
2.9 |
4.4 |
Polycarbonate |
804 |
951 |
1,323 |
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Note: The numerical values above give typical values. These values are not guaranteed.
There are a variety of conditions regarding the insert location that may require consideration, so it is essential to conduct tests before making a selection. |
 Prudoct Detail Dodge insert （HSD / HFD） |
