Description
M005 M5x8 Cup-Head Inner Hexagonal Link Screw for GK9 Portable Bag Closer
The M005 Cup-Head Inner Hexagonal Screw M5x8 (Link Screw) is a precision replacement fastener designed for GK9 portable bag closer machines. It is used to mount, secure, and pivot critical moving linkage assemblies that transfer motion throughout the machine. A correctly fitted link screw helps maintain smooth mechanical movement, accurate timing, and dependable bag stitching performance.
Designed with an M5 thread, 8mm thread length, low-profile cup head, and internal hex socket, this replacement screw provides a secure hold while allowing linkage components to operate smoothly. It is an ideal replacement for worn, damaged, or missing original screws.
Please cross-check the M005 part number and compare the size of your existing screw with your machine’s parts diagram before purchasing.
Why This Link Screw Is Important
The M005 screw plays a key role in the machine’s internal drivetrain by securing moving linkage assemblies that transmit power from the drive mechanism to other operating components.
Replacing a worn or loose screw helps:
- Maintain precise linkage alignment
- Reduce unwanted vibration
- Keep pivot joints securely fastened
- Improve power transmission efficiency
- Support smooth and consistent stitch formation
- Extend the service life of connected components
Because it uses an internal hex socket, the screw can be tightened securely with the appropriate Allen key for dependable fastening.
Key Features
- Genuine replacement for M005 Link Screw
- Precision M5 thread
- 8mm thread length
- Low-profile cup-head design
- Internal hex (Allen) socket drive
- Designed for moving drivetrain linkage assemblies
- Helps maintain accurate mechanical timing
- Suitable for routine maintenance and repairs
Machine Compatibility
This replacement screw is compatible with standard handheld portable industrial bag closer and bag stitching machines built on the GK9 mechanical platform, including:
- GK9-2
- GK9-8
- GK9-18
- GK9-18A
- GK9-200
- GK9-350
- GK9-500
- GK9-900 (including cordless battery-powered models)
- GK9-1001
It is also compatible with equivalent portable bag closer machines from:
- Newlong (matching handheld styles)
- Flyingman
- Revo
- Gemsy
- Zoje
- Moonstar
- Other standard China-made handheld packaging systems
| Machine Type | Compatible |
|---|---|
| GK9-2 | Yes |
| GK9-8 | Yes |
| GK9-18 | Yes |
| GK9-18A | Yes |
| GK9-200 | Yes |
| GK9-350 | Yes |
| GK9-500 | Yes |
| GK9-900 | Yes |
| GK9-1001 | Yes |
Compatible Assembly
The M005 screw is specifically used in the:
A015 Main Drive Link Lever Complete Set
It directly secures:
- Central reciprocating joints
- Main drive link arms
- Carrying pole assemblies
- Internal drivetrain linkage pivots
These components work together to maintain accurate motion and synchronization throughout the sewing cycle.
Supports Heavy-Duty Industrial Bag Stitching
Although this fastener does not directly contact the bag material, it is essential for maintaining the rigid drivetrain needed for heavy-duty sewing applications.
Properly secured linkage assemblies help the machine stitch consistently through:
- Woven polypropylene (PP) sacks
- Burlap bags
- Jute sacks
- Canvas bags
- Mesh bags
- Thick multi-wall kraft paper bags
A stable drivetrain reduces unwanted movement and supports reliable stitch quality during continuous industrial packaging operations.
Installation Guide
- Disconnect the machine from the power supply.
- Remove the worn or damaged M005 screw.
- Inspect and clean the threaded mounting hole.
- Position the linkage assembly correctly.
- Install the new M5x8 cup-head screw.
- Tighten using the correct Allen key.
- Verify that the linkage moves freely before operating the machine.
Avoid overtightening, as excessive torque may affect linkage movement or damage the threads.
Frequently Asked Questions
What is the M005 link screw used for?
The M005 screw secures critical moving linkage assemblies inside GK9 portable bag closer machines, ensuring proper alignment and smooth drivetrain operation.
What are the dimensions of this screw?
This replacement screw features an M5 thread with an 8mm thread length, a low-profile cup head, and an internal hex socket drive.
Which assembly uses this screw?
It is commonly installed in the A015 Main Drive Link Lever Complete Set, where it secures reciprocating joints, drive link arms, and carrying pole assemblies.
Will this fit all GK9 portable bag closer machines?
It is compatible with many GK9 models, including GK9-2, GK9-8, GK9-18, GK9-18A, GK9-200, GK9-350, GK9-500, GK9-900, and GK9-1001. Always verify the part number and dimensions before ordering.
Can I install this screw myself?
Yes. Installation is straightforward if you have the appropriate Allen key and follow your machine’s service manual. Ensure the linkage is correctly aligned before tightening.
