Turnbuckles
Turnbuckle 12mm JIS Frame Type Open Body Hook Hook
A drop-forged carbon steel turnbuckle with a 12mm threaded body and hook ends on both sides, designed for tension adjustment in rigging systems. The JIS frame type has an open body construction with a straight frame and threaded rods, allowing for easy visual inspection and maintenance. Available in sizes from 6mm to 50mm, it is used in construction, maritime, and industrial rigging to adjust chain or wire rope tension. The electric galvanized finish resists corrosion in outdoor and marine environments.
- Size
- 6mm-50mm
- Material
- Carbon Steel
- Type
- JIS Frame Process: Drop Forged Surface: Electric Galvanized
- Packing
- Cartons or Gunny Bags and then on Pallets
- Catalogue Family
- Turnbuckles
- 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 Turnbuckle 12mm JIS Frame Type Open Body Gives You
- Adjusts tension in chains and wire ropes with a single turn of the body, reducing setup time on site
- Open body design allows full visual inspection of the threaded rods and internal components
- Drop-forged carbon steel construction provides high strength and impact resistance
- Electric galvanized surface finish resists rust and corrosion in humid and marine environments
- Hook ends on both sides allow direct attachment to anchors, chains, or rigging points without additional fittings
- Standardized JIS frame dimensions ensure compatibility with other JIS-rated rigging components
- Threaded rods are sized at 12mm, matching common chain and wire rope fittings for direct connection
Application Scenarios
Where Turnbuckle 12mm JIS Frame Type Open Body Is Used
- Tensioning wire rope stays on offshore platforms or marine mooring systems where corrosion resistance is critical
- Adjusting chain tension in construction hoists and temporary scaffolding systems during erection
- Securing guy wires on communication towers and mast structures with consistent load distribution
- Tightening cable systems in stage rigging and entertainment installations for consistent tension
- Maintaining alignment and tension in overhead power line support systems during installation
Who It Is For
Buyers This Product Is Built For
- Marine rigging contractors specifying tensioning hardware for shipboard and offshore applications
- Construction site supervisors managing temporary rigging and lifting systems
- Industrial maintenance teams adjusting chain and cable tension in cranes and hoists
- Stage and event engineers setting up tensioned cable systems for lighting and rigging
- Utility companies installing and maintaining overhead line support structures
Problems It Solves
Problems This Product Removes
- Difficulty in adjusting chain or wire rope tension without disassembling the entire system
- Corrosion damage to turnbuckles in outdoor or marine environments leading to failure
- Inadequate visual access to threaded rods in closed-body turnbuckles during inspection
- Mismatched thread sizes between turnbuckle and chain or rope fittings requiring adapters
- Lack of standardization in frame type causing compatibility issues between components
- Need for multiple fittings to connect a turnbuckle to a chain or anchor point
Technical Features
Technical Features
- Drop-forged carbon steel body with 12mm threaded rod diameter
- JIS frame type open body construction with straight frame and threaded ends
- Hook end on both sides for direct attachment to anchors or rigging points
- Electric galvanized surface finish for corrosion resistance
- Threaded rods designed to match standard 12mm chain and wire rope fittings
- Open body allows inspection of threads and internal condition without disassembly
- Standardized JIS dimensions ensure compatibility with other JIS-rated rigging hardware
Specifications
Turnbuckle 12mm JIS Frame Type Open Body Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Thread Diameter | 12mm |
|---|---|
| Material | Carbon steel |
| Process | Drop forged |
| Surface Finish | Electric galvanized |
| End Type | Hook and hook |
| Frame Type | JIS frame open body |
| Size Range | 6mm to 50mm overall length |
| Design Factor | 4:1 minimum breaking load to safe working load |
Materials
Materials And Finishes
- Carbon steel body drop forged for high strength and fatigue resistance
- Electric galvanizing layer applied to the entire surface for corrosion protection
- Threaded rods made from heat-treated carbon steel to resist wear and deformation
- Hook ends formed from the same forged carbon steel to match the body strength
Manufacturing Process
How This Product Is Made
1Drop forging of the body and threaded rod blanks
2Heat treatment of the forged blanks to improve tensile strength
3Machining of the threaded rods and hook ends to JIS dimensions
4Electric galvanizing of the entire assembly for corrosion resistance
5Final inspection of thread engagement and hook alignment
6Proof load testing and marking of working load limit
7Packing in cartons or gunny bags for shipment
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against JIS frame specifications
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection of thread integrity and galvanizing uniformity
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for traceability
- Private label and OEM marking available
- Surface finish options including electric galvanizing, zinc plating, or powder coating
- Custom sizes and lengths built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, or retail pack
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 |
|---|---|
| Closed-body turnbuckle | The open body allows full inspection of threads and internal condition, but is more exposed to debris and impact |
| Eye and eye turnbuckle | The hook hook version allows direct attachment to chains or anchors without pins, but has less load capacity at the hook point |
| Threaded rod with nuts | The turnbuckle adjusts tension faster and more precisely, but requires more space for rotation |
| Screw pin shackle | The turnbuckle provides continuous tension adjustment, but is bulkier and slower to install than a shackle |
Use Guide
How To Use And Inspect Turnbuckle 12mm JIS Frame Type Open Body
- Ensure the hook ends are fully engaged on the anchor or chain link before applying tension
- Turn the body evenly to avoid side loading and ensure even thread engagement
- Check the galvanized coating for damage after installation; repair if needed
- Inspect the threads and hook points regularly for wear or deformation
- Do not exceed the stamped working load limit on the body
- Retire the turnbuckle if the body shows bending, the threads are stripped, or the coating is severely damaged
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Answers
Turnbuckle 12mm JIS Frame Type Open Body FAQ
What does 12mm refer to in a turnbuckle?
The 12mm refers to the diameter of the threaded rod on each end, which matches standard 12mm chain and wire rope fittings.
Is this turnbuckle suitable for marine use?
Yes. The electric galvanized finish provides corrosion resistance for outdoor and marine environments.
Can I get a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with the order on request.
What are the end types available?
The standard end type is hook and hook. Other configurations like eye and hook or eye and eye are available on request.
What is the JIS frame type?
The JIS frame type is an open-body design with standardized dimensions per JIS standards, allowing for easy inspection and compatibility with other JIS-rated components.
How is it packed for export?
Packed in cartons or gunny bags, then loaded on pallets. Custom packing configurations are available to suit warehouse or retail needs.
Can I customize the tonnage marking or branding?
Yes. Custom tonnage stamping, private label marking, and OEM packing are standard options.
Need A Quote On Turnbuckle 12mm JIS Frame Type Open Body
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