Blind Joint Components - Post Assembly Insertion Double Joint Kits for 6 Series (Slot Width 8mm) Aluminum Frames

Caution
Product Description
Fastening securely from 2 parts is enabled. It can achieve one of the tightest fastening out of all hidden joints.
Dimensional Drawing of Blind Joint Parts


Blind Joint Parts, The tapered portion of the joint pipe and the protrusion of the post-insertion joint
create an upward pulling force, fastening the frames together.
| Part Name | [M] Material Blind Joint Parts | |
| Post-insertion double joint (A/B) | SCS13 | |
| Joint Pipe | No.6−30 No.6−50 No.6−90 No.6−100 No.6−120 | SUS304 equivalent (sintered) |
| No.6−60 | SUS304 | |
| Hexagonal Socket Head Bolt | SUS304 | |
| Part Name | [M] Material | |
| Post-insertion double joint (A/B) | SCS13 | |
| Joint Pipe | No.6−30 No.6−50 No.6−90 No.6−100 No.6−120 | SUS304 equivalent (sintered) |
| No.6−60 | SUS304 | |
| Hexagonal Socket Head Bolt | SUS304 | |
Specification Table of Blind Joint Parts
| Model Blind Joint Parts |
| HPJN6-30 |
・To check the latest price, please click the "Check Price" button after confirming the model number.
| Model | accessories | ||||||||
| Type | No. | ① Post-insertion double joint A | Quantity | ② Rear-insertion double joint B | Quantity | ③Joint pipe | Quantity | ④Hexagon socket head bolt | Quantity |
| HPJN | 6−30 | Rear-insertion double joint A6 | 1 | Rear-insertion double joint B6 | 1 | Joint Pipe 6-30 | 1 | M5×22 | 1 |
| 6−60 | Joint Pipe 6-60 | M5×50 | |||||||
| 6-50 | Joint pipe 6-50 | M5×40 | |||||||
| 6-90 | Joint pipe 6-90 | M5×80 | |||||||
| 6-100 | Joint Pipe 6-100 | M5×90 | |||||||
| 6-120 | Joint pipe 6-120 | M5×110 | |||||||
| Part Name | L | D | d |
| Joint Pipe 6-30 | 12 | 11 | 7 |
| Joint Pipe 6-60 | 42 | ||
| Joint Pipe 6-50 | 32 | ||
| Joint Pipe 6-90 | 72 | ||
| Joint Pipe 6-100 | 82 | ||
| Joint pipe 6-120 | 102 |
| Rear-mount double joint kit | Compatible frame number | [Exception] Unusable frames | |
| HPJN6-30 | 6-3030 | Cannot be used on surfaces without grooves. | |
| HPJN6−60 | 6−3060 | 6−6060 | |
| HPJN6-50 | 6−5050 | 6−50100 | |
| HPJN6-90 | 6−3090 | 6−6090 | |
| HPJN6-100 | 6−50100 | 6−100100 | |
| HPJN6-120 | 6-30120 | 6−60120 | |
How to Connect of Blind Joint Parts
| Additional work required for aluminum frame of Blind Joint Parts |
|---|
| M hole |
| procedure | Front View | Side View | explanation Blind Joint Parts | How to specify the model (for 30mm square) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ![]() | ![]() | ![]() | First, insert the joint pipe C into the M hole on the frame ①. |
| ||||||||||||||
| 2 | ![]() | ![]() | Place the rear-mount double Blind Joint Parts Ⓐ Ⓑ horizontally and insert it into the groove of the frame ②. | ![]() | |||||||||||||||
| 3 | ![]() | ![]() | ![]() | Rotate the rear-insertion double joints Ⓐ and Ⓑ by 90 degrees. | |||||||||||||||
| 4 | ![]() | ![]() | Insert the rear-mount double joints Ⓐ and Ⓑ into the grooves of the frame. | ![]() | |||||||||||||||
| 5 | ![]() | ![]() | ![]() | Insert the hexagon socket bolt into the countersunk hole of post-assembly double joint Ⓐ. | |||||||||||||||
| 6 | ![]() | ![]() | When the hexagonal socket bolt is tightened with a hexagonal wrench, frames ① and ② are pulled upward, joining the frames together. | ![]() | |||||||||||||||
*Note:
Blind Joint Parts, When tightening the bolts, hold the joint parts with your fingers while tightening. (1) This
will ensure that the bolts are securely fastened in the center position without protruding from the frame. (2)
If you tighten the bolts without holding them down, they may be fastened in a position that protrudes from the frame. (3)

*For tightening torque, please refer to the standard tightening torque of the included bolt . *We do not provide strength data for blind joints.
| symbol | Product name | Model |
|---|---|---|
| (1) | Aluminum frame M hole additional machining | HFS6-3030-1000-LMH |
| (2) | Aluminum frame | HFS6-3030-1000 |
| (3) | Rear-mount double joint kit | HPJN6-30 |
Product Comparison Information of Blind Joint Parts
■6 Series Blind Joint Parts
| Product name | Post-insertion double joint | First-in double joint | Tapping Joint | Screw joint | Simple joint | Single Joint | Center Joint | Parallel Joint |
|---|---|---|---|---|---|---|---|---|
| Product Photos | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Installation Diagram | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Material Blind Joint Parts | Equivalent to SCS13/SUS304 | SUS316 equivalent / SUS304 | SWCH-18A | Iron or SUS304 | S45C/SCM435 | Iron or SUS304 | SCS13 | SCS13/SUS304 |
| Features Blind Joint Parts | Stable fastening is possible from two points. This is the strongest fastening possible with blind joints. | This blind joint can be used for a variety of purposes, such as extending frames or attaching to plates. | No additional tapping is required. Wrench holes are drilled into the mating frame. This is the most inexpensive blind joint. | The plate allows for reliable and inexpensive connection. | No additional machining of wrench holes is required, and fastening can be done in one place. | Since the additional D hole does not penetrate all the way to the flat surface, this is a blind joint with particularly excellent aesthetics. | This is the most common blind joint that can be used with a wide range of aluminium frames. | The frames can be connected side-by-side. |
| 6 Series Product Page | Viewing | Product page | Product page | Product page | Product page | Product page | Product page | Product page |
| Additional work required for the frame | M hole | S hole | Wrench Hole | Tap holes and wrench holes | Tap hole drilling | Wrench hole / D hole | M hole | L-hole |
Related Items of Blind Joint Parts
■6 Series (groove width 8mm) of Blind Joint Parts
| Product name | Aluminum frame | bracket | Frame cap | Groove cover | nut |
|---|---|---|---|---|---|
| photograph | ![]() | ![]() | ![]() | ![]() | ![]() |
| Product page | Here | Here | Here | Here | Here |









































