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Aluminum frames can be connected longitudinally using pre-fit double joints.
Part Number
Configured Part Number is shown.
| HDJSN HDJHSN (Eccentric nut type) | ①Pre-inserted double Blind Joint Parts HDJFSN(equivalent to SUS316, sintered) | ②Pre-insertion nut HNTTSN (equivalent to SUS316, sintered) with conductive function | HNTHSN (equivalent to SUS316, sintered) with conductive function |
![]() | ![]() | ![]() | ![]() |
| Model |
| HDJSN8 |
| First-in double Blind Joint Parts | Frame Type | Can be used in any orientation | Can only be used in the short direction | Can only be used in the longitudinal direction | Can only be used in a direction where there is no flat surface on the connection | |
| HDJSN8 HDJHSN8 HDJFSN8 | NFS8 HFS8 GFS8 EFS8 CAF8 HFSY8 NEFS8 | 4040 | ○ | |||
| 4080 | ○ | |||||
| 40120 | ○ | |||||
| 40160 | ○ | |||||
| 8080 | ○ | |||||
| 80160 | ○ | |||||
| HFSH8 | 8080 | ○ | ||||
| HFSF8 GFSF8 EFSF8 NEFSF8 | 4040 | ○ | ||||
| 4080 | ○ | ○ | ||||
| 8080 | ○ | |||||
| HFSH8 EFSH8 | 4040 | ○ | ||||
| 4080 | ○ | ○ | ||||
| NFSL8 HFSL8 | 4040 | ○ | ||||
| 4080 | ○ | |||||
| HFSB8 EFSB8 | 4040 | ○ | ||||
| 4080 | ○ | |||||
| 40120 | ○ | |||||
| 40160 | ○ | |||||
| 8080 | ○ | |||||
| 80160 | ○ | |||||
| HFSFB8 | 4040 | ○ | ||||
| HFSLB8 | 4040 | ○ | ||||
| 4080 | ○ | |||||
| kinds | Model | ① First-insertion double Blind Joint Parts (2 pieces) | ② Pre-insertion nuts (2 pieces) | ③Hexagon socket head bolts (2 pcs) | |
| Blind Joint Parts Type | No. | Equivalent to SUS316 | Equivalent to SUS316 | SUS304 | |
| Standard Type | HDJSN (equivalent to SUS316, sintered) | 8 | HDJFSN8 | HNTTSN8-6 | SCB6-35 |
| Eccentric nut type | HDJHSN (equivalent to SUS316, sintered) | 8 | HDJFSN8 | HNTHSN8 | SCB6-35 |
| Blind Joint Parts Model | |
| Blind Joint Parts Type | No. |
| HDJFSN (1 set contains 2 pieces) | 8 |
| procedure | Front View | explanation | How to specify the model (for 30mm square) | |||||||||||||||||
| 1 | ![]() | ![]() | ![]() |
| ||||||||||||||||
| ② Insert the pre-assembly nuts into frame Ⓐ in advance. | ||||||||||||||||||||
| 2 | ![]() | ![]() | ![]() | |||||||||||||||||
| Insert bolt ③ into frame Ⓑ with hole S. Pass the head of the bolt through hole S and raise the bolt along the groove in the frame until the bottom end of the bolt is above hole S. | ||||||||||||||||||||
| 3 | ![]() | ![]() | ![]() | |||||||||||||||||
Insert the first-in double Blind Joint Parts ① into the frame Ⓑ with the bolt passing through . | ||||||||||||||||||||
| 4 | ![]() | ![]() | ![]() | |||||||||||||||||
Pass the bolt through the hole in the pre-assembled double Blind Joint Parts inside the groove of frame B. | ||||||||||||||||||||
| 5 | ![]() | ![]() | ||||||||||||||||||
| Place frame B on frame A, and slide the pre-insertion nuts and bolts from both sides to connect to the double Blind Joint Parts ①. | ||||||||||||||||||||
| 6 | ![]() | ![]() ![]() | ![]() Tighten while adjusting the position with a hex wrench. | |||||||||||||||||
| 7 | ![]() | |||||||||||||||||||
■8 Series Model Example
| Product name | Model example |
|---|---|
| Frame A | HFS8-4040-1000 |
| Frame B | HFS8-4040-1000-LSH |
| Pre-inserted double Blind Joint Parts kit | HDJSN8 |
| Pre-inserted double Blind Joint Parts kit contents | |
| ① First-in double Blind Joint Parts | HDJFSN8 |
| ②Pre-insertion nuts | HNTTSN8-6 |
| ③Hexagon socket head bolt | SCB6-35 |
[Method of adding additional work to the frame]
Example: When adding a 1000mm aluminum frame to a 4000mm aluminum frame with a cross section of 30x60
1. Drill S holes horizontally on the right side of the 4000mm aluminum frame.2
. Drill D holes horizontally on the left side of the 1000mm aluminum frame.3
. Prepare pre-fit double Blind Joint Parts for the number of S holes.4
. Prepare pre-fit double joint nuts for the number of D holes.5
. Prepare 2 hexagon socket bolts for the pre-fit double Blind Joint Parts.6
. Pass the bolt (5) through the pre-fit double joint (3).7.
Insert the head of the bolt (5) into the S hole, then insert (3) into the S hole.8.
Insert (4) into the D hole of the frame (2) so that the tap is level with the groove.9.
Fasten to (4) with the bolt installed in (7). Do this for the number of grooves on both sides.
| series | symbol | Product name | Model | quantity | remarks |
|---|---|---|---|---|---|
| 8 | (1) | 40x80 Aluminum Frame S-Hole | HFS8-4080-4000-RSH | 1 | - |
| (2) | 40x80 Aluminum Frame D Hole | HFS8-4080-1000-LDH | 1 | - | |
| (3) | Single pre-inserted double Blind Joint Parts | HDJFSN8 | 2 | 2 pieces per set | |
| (4) | Pre-insertion double joint nut | HDJRN8 | 2 | - | |
| (5) | Hexagon socket head bolt | CBM6-50 | 4 | - |

・We have>frames with pre-assembled double Blind Joint Parts. There is no need to do any additional work on the aluminum frame, so it can be used immediately.
■8 Series Blind Joint Parts
| Product name | First-in double Blind Joint Parts | Parallel Blind Joint Parts | Center Blind Joint Parts | Screw Blind Joint Parts | Single Blind Joint Parts | Tapping Blind Joint Parts | Post-insertion double Blind Joint Parts |
|---|---|---|---|---|---|---|---|
| Product Photos | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Installation Diagram | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Blind Joint Parts Material | SUS316 equivalent / SUS304 | SCS13/SUS304 | SCS13 | Iron or SUS304 | Iron or SUS304 | SWCH-18A | Equivalent to SCS13/SUS304 |
| Features | This Blind Joint Parts can be used for a variety of purposes, such as extending frames or attaching to plates. | The frames can be connected side-by-side. | This is the most common Blind Joint Parts that can be used with a wide range of aluminium frames. | The plate allows for reliable and inexpensive connection. | Since the additional D hole does not penetrate all the way to the flat surface, this is a Blind Joint Parts with particularly excellent aesthetics. | No additional tapping holes are required. This is the most inexpensive Blind Joint Parts. | Stable fastening is possible from two points. This is the strongest fastening possible with Blind Joint Parts. |
| 8 Series Product Page | Viewing | Product page | Product page | Product page | Product page | Product page | Product page |
■8 series (groove width 10mm)
| Product name | Aluminum frame | Blind Joint Parts | Frame cap | Groove cover | nut |
|---|---|---|---|---|---|
| photograph | ![]() | ![]() | ![]() | ![]() | ![]() |
| Product page | Here | Here | Here | Here | Here |
CAD Data download and 3D preview are not available because the part number has not yet been determined.
| Part Number |
|---|
| HDJFSN8 |
| HDJHSN8 |
| HDJSN8 |
| Part Number | Standard Unit Price | Number of pc(s). included in pkg. | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Type |
|---|---|---|---|---|---|---|---|
MYR 9.09 | 2 Pieces Per Package | 1 Pack(s) | Available | 2 Day(s) | 10 | Joint Single Item Type | |
MYR 15.94 | 1 Piece(s) | Available | 4 Day(s) or more | - | Joint Kits - Offset Nut Type | ||
MYR 15.94 | 1 Piece(s) | Available | 2 Day(s) | - | Joint Kits - Standard Type |
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| Material | SUS316 Equivalent, Sintered | Extrusion No. | 8 | Joint Kit Type | Pre-Assembly Insertion Double Joint Kits |
|---|

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