Weldless Chains
SASH CHAIN
A stamped carbon steel flat link chain known as sash chain, used primarily in double hung window assemblies for vertical lift and retention. It is manufactured to US type NACM standard with zinc or copper plating, and is not rated for overhead lifting. Available in trade sizes from 8 to 40 with working load limits from 75 to 131 pounds and minimum break test loads from 300 to 525 pounds.
- Material
- Carbon steel Surface: zinc plated finish, Copper plated finish
- Type
- US type NACM Standard
- Catalogue Family
- Weldless Chains
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Sash Chain Gives You
- Flat link design allows smooth vertical movement in window sash mechanisms without binding
- Zinc or copper plating resists corrosion in indoor and mild outdoor environments
- Stamped construction ensures consistent link geometry and repeatable fit in window frames
- Low weight per foot reduces stress on window balance systems and hardware
- Complies with US type NACM standard for dimensional consistency in window applications
- No welded joints eliminate weak points and potential stress risers in the chain body
- Available in multiple trade sizes to match standard window sash dimensions
Application Scenarios
Where Sash Chain Is Used
- Double hung window sash systems where the chain lifts and holds the window panel in position
- Retaining chains for valve caps, dial covers, and access lids in industrial equipment
- Light-duty assembly line conveyors where a chain guides or holds a component in place
- Aerospace panel retention systems requiring a low-profile, non-welded chain
- Farm gate or door latch mechanisms where a chain holds a panel closed under light tension
- Retail display fixtures using chains to suspend or guide movable parts
Who It Is For
Buyers This Product Is Built For
- Window hardware manufacturers integrating sash chains into double hung window systems
- Industrial equipment builders specifying non-welded chains for panel retention
- Aerospace component assemblers needing low-profile, non-welded chains for access panels
- Farm equipment suppliers building gate or door latches with reliable retention
- Retail fixture designers using chains for suspended or guided display elements
Problems It Solves
Problems This Product Removes
- Preventing window sash from dropping due to weak or binding chain mechanisms
- Replacing welded chains that may have inconsistent joints or stress points
- Avoiding corrosion in indoor environments with zinc or copper plated chain
- Eliminating the need for custom welding when a standard stamped chain fits the application
- Reducing chain weight to prevent overloading window balance systems
- Solving retention issues on valve caps or lids where a chain must hold under light load
Technical Features
Technical Features
- Stamped carbon steel construction with no welds or joints
- Flat link design for smooth vertical movement in window sash
- Zinc plated or copper plated surface finish for corrosion resistance
- Complies with US type NACM standard for dimensional and functional consistency
- Trade sizes from 8 to 40 with corresponding working load limits and break test loads
- No overhead lifting rating — intended only for horizontal or vertical retention
- Chain length and weight per 100 links and per 100 feet provided for engineering calculations
Specifications
Sash Chain Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Material | Carbon steel |
|---|---|
| Surface Finish | Zinc plated or copper plated |
| Standard | US type NACM |
| Application | Double hung window sash, valve cap, lid, door retention |
| Trade Size Range | 8 to 40 |
| Working Load Limit Range | 75 to 131 pounds |
| Minimum Break Test Load Range | 300 to 525 pounds |
| Length per 100 Links | 53.0 to 57.0 inches |
| Weight per 100 Feet | 3.75 to 7.0 pounds |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Carbon steel blank stamped into flat links
- Zinc plating for indoor and mild outdoor corrosion resistance
- Copper plating for aesthetic finish and moderate corrosion protection
- No welding or joining processes — single-piece stamped construction
Manufacturing Process
How This Product Is Made
1Carbon steel strip fed into stamping press to form flat links
2Links trimmed and deburred to remove sharp edges
3Surface treatment applied — zinc plating or copper plating
4Inspection for dimensional consistency and surface quality
5Cut to length and packaged in bulk or by weight
6Marked with trade size and load rating for traceability
Quality Control
Quality Control On Every Batch
- Dimensional inspection of link width and height against published size table
- Visual check for burrs, cracks, or surface defects after plating
- Proof load test on production batches to verify working load limits
- Breaking strength validation to confirm minimum break test load
- Material Test Certificate to EN 10204 3.1 supplied on request
- Third-party inspection accepted before shipment
Customisation
Customisation Options
- Custom trade size and length available upon request
- Zinc plating or copper plating as standard options
- Private label marking on packaging or chain links
- Custom packaging configuration for bulk or retail use
- Custom carton and pallet setup for warehouse or distribution needs
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Welded chain | Sash chain has no welds, so no weak joint or stress riser; better for repetitive motion and long life |
| Round link chain | Flat link design fits into narrow window tracks and provides better alignment in sash mechanisms |
| Wire rope | Chain offers higher rigidity and better retention in fixed positions; wire rope is more flexible but less stable under load |
| Synthetic webbing | Chain provides better wear resistance and does not stretch under load; webbing is lighter but degrades faster under abrasion |
Use Guide
How To Use And Inspect Sash Chain
- Do not exceed the working load limit stamped on the chain or in the specification table
- Use only for horizontal or vertical retention — never for overhead lifting
- Inspect chain regularly for wear, deformation, or plating loss
- Replace if the link shows visible bending, stretching, or surface damage
- Ensure the chain runs freely in the window track without binding
- Avoid exposure to harsh chemicals or saltwater environments that may degrade plating
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Answers
Sash Chain FAQ
Is this chain suitable for overhead lifting?
No. Sash chain is not rated for overhead lifting and must not be used in any lifting application.
What is the difference between zinc and copper plating?
Zinc plating offers better corrosion resistance for indoor use. Copper plating provides a decorative finish and moderate protection in dry environments.
Can you provide a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
What sizes are available?
Trade sizes range from 8 to 40. The working load limit and break test load vary by size as listed in the specification table.
Can the chain be cut to length?
Yes. Custom lengths are available. Contact us with the required length and application details.
Is this chain compatible with standard window sash tracks?
Yes. The flat link design and standard trade sizes are designed to fit common double hung window sash mechanisms.
How is it packaged for export?
Standard packaging is in bulk rolls or cartons. Custom carton and pallet configurations are available. Goods can be held in our Qingdao warehouse free for two months for shipment consolidation.
Need A Quote On Sash Chain
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.