Screw Joint for 8 Series Aluminum Frame Blind Joints

Caution
- Please check the content on our website as the PDF does not contain the most up-to-date information.
Product Description
A blind joint with excellent cost benefits. Equipped with a frame rotation prevention function.
Dimensional Drawing of Blind Joint Parts

| Type | Components | [ M ]Material | [ S ]Surface Treatment |
| HCJ | Screw | SCM435 | Trivalent Chromate |
| Blind Joint Parts Plate | SPCC |
Specification Table of Blind Joint Parts
| Model |
| HTJ8 |
・To check the latest price, please click the "Check Price" button after confirming the model number.
| Blind Joint Parts Model | Components | ||
| Blind Joint Parts Type | No. | ⒶScrew bolt | ⒷJoint plate |
| HCJ(trivalent chromate) | 8 | M12 | 8 |
| Compatible frame number | [Exception] Unusable frames | |||
| 8−4040* | 8−4080 | 8−40120 | 8−40160 | *HFSR8-4040 with curved surfaces cannot be used as wrench holes cannot be machined. |
How to Connect of Blind Joint Parts
| procedure | 1 | 2 | 3 |
|---|---|---|---|
| explanation | Attach the screw Blind Joint Parts to the tapped hole on the end face of the frame. | Insert the head of the screw Blind Joint Parts into the groove of frame B and slide it to the underside of A. | Insert a hex wrench through the wrench hole and tighten. |
| Screw Blind Joint Parts | ![]() | ![]() | ![]() |
| 8 Series Model Example | Frame A | Frame B | Screw Blind Joint Parts |
|---|---|---|---|
| HFS8-4040-1000-LTP | HFS8-4040-1000-RCV | HCJ8 |
We also have aluminum frames with screw Blind Joint Parts (HCJ8) already installed.
Additional wrench holes will be required on the mating frame.
Pre-installed frame Screw Blind Joint Parts type
Technical Information of Blind Joint Parts
■How to make the frame cap flush:
Shorten the length of the aluminum frame by the thickness of the frame cap.
*Alterations (FR/FL) for "2.5 mm thickness" are not currently supported.C
: For the frame cap thickness, specify the protruding
Blind Joint Parts model HFS6-3030-300-RCV-LCV and 300 mm length with wrench holes on the left and right.D
: For the frame cap that does not protrude and is flush,
specify the model HFS6-3030-294-RCV-LCV-FR-FL, shortened by the frame cap thickness, and specify wrench holes and wrench hole shifts on the left and right.
C Frame cap pops out
D Frame caps are flush and
do not protrude

Product Comparison Information of Blind Joint Parts
■8 Series Blind Joint Parts
| Product name | Screw Blind Joint Parts | Single Blind Joint Parts | Tapping Blind Joint Parts | Center Blind Joint Parts | Post-insertion double Blind Joint Parts | First-in double Blind Joint Parts | Parallel Blind Joint Parts |
|---|---|---|---|---|---|---|---|
| Product Photos | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Installation Diagram | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Blind Joint Parts Material | Iron or SUS304 | Iron or SUS304 | SWCH-18A | SCS13 | Equivalent to SCS13/SUS304 | SUS316 equivalent / SUS304 | SCS13/SUS304 |
| Blind Joint Parts Features | 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. | This is the most common Blind Joint Parts that can be used with a wide range of aluminium frames. | Stable fastening is possible from two points. This is the strongest fastening possible with Blind Joint Parts. | 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. |
| 8 Series Product Page | Viewing | Product page | Product page | Product page | Product page | Product page | Product page |
Related Items of Blind Joint Parts
■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 |
Example of Use






















