Turnbuckles
Jaw and Jaw Turnbuckle DIN 1478 Rigging Screw Closed Type
A closed-body turnbuckle with jaw ends at both ends, made from cold-drawn seamless steel tube, designed for adjustable tension in rigging systems. It connects directly to anchor points, hooks, or shackles without requiring additional fittings. Sizes range from M6 to M36 with working load limits from 230 kg to 4800 kg. Standard finish is hot-dipped galvanized for corrosion resistance.
- Size
- M6-M36 Tips: Only suitable for use in tension
- Material
- Cold-drawn Seamless Steel Tube
- Type
- Jaw End, Eye End, Hook End Process: Drop Forged Surface: Hot Dipped 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 DIN 1478 Turnbuckle Gives You
- Jaw ends allow direct attachment to hooks, shackles, or anchor points without extra fittings
- Closed pipe body prevents debris ingress and maintains structural integrity under tension
- Cold-drawn seamless steel tube provides consistent strength and dimensional stability
- Hot-dipped galvanized finish resists rust in outdoor and marine environments
- Adjustable tension without disassembly allows for on-site fine-tuning of rigging systems
- Standard 4:1 design factor ensures safe working load is maintained under load
- Compact design reduces bulk compared to multiple separate components
Application Scenarios
Where DIN 1478 Turnbuckle Is Used
- Marine mooring systems where tension must be adjusted on deck or at anchor points
- Construction rigging for temporary cable stays and tensioned support lines
- Shipbuilding applications for aligning and securing structural components
- Industrial equipment mounting where tension needs periodic adjustment
- Offshore platform support systems requiring corrosion-resistant tensioning hardware
- Temporary rigging setups in ports and logistics hubs for load stabilization
Who It Is For
Buyers This Product Is Built For
- Marine and offshore contractors specifying mooring and anchoring hardware
- Construction firms managing temporary rigging and cable tensioning
- Shipyards sourcing standardized rigging components for vessel assembly
- Industrial maintenance teams adjusting tension in conveyor systems and support frames
- Rigging distributors carrying a full turnbuckle range with multiple end types
- Logistics operators securing cargo on trailers using adjustable tension lines
Problems It Solves
Problems This Product Removes
- Need to connect rigging hardware to anchor points without additional shackles or fittings
- Corrosion damage in outdoor or marine environments due to untreated steel
- Debris accumulation in open-body turnbuckles that can jam the screw mechanism
- Inconsistent tension adjustment due to loose or misaligned end fittings
- Requiring a single component to replace a chain of shackles and turnbuckles
- Lack of traceability and standardized marking on low-cost turnbuckles
Technical Features
Technical Features
- Closed pipe body made from cold-drawn seamless steel tube
- Jaw end at both ends for direct attachment to hooks, shackles, or anchor points
- Threaded screw mechanism with right-hand and left-hand threads for tension adjustment
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Hot-dipped galvanized surface finish for corrosion resistance
- Working load limit and size stamped on the body for traceability
- Designed for use in tension only, not in shear or bending
Specifications
DIN 1478 Turnbuckle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 230 kg to 4800 kg safe working load |
|---|---|
| Material | Cold-drawn seamless steel tube |
| End Type | Jaw end at both ends |
| Surface Finish | Hot-dipped galvanized |
| Size Range | M6 to M36 thread size |
| M6 Dimensions | L1 110 L2 88 L3 58 φ1 15 φ2 11.2 φ3 6 A 8 M 6 S.W.L 230 kg |
| M8 Dimensions | L1 110 L2 105 L3 65 φ1 17 φ2 14 φ3 8 A 10 M 8 S.W.L 440 kg |
| M10 Dimensions | L1 125 L2 125 L3 75 φ1 21 φ2 16 φ3 8 A 12 M 8 S.W.L 440 kg |
| M12 Dimensions | L1 125 L2 145 L3 85 φ1 25 φ2 18 φ3 10 A 16 M 10 S.W.L 600 kg |
| M16 Dimensions | L1 170 L2 170 L3 100 φ1 30 φ2 22.8 φ3 10 A 20 M 12 S.W.L 800 kg |
| M20 Dimensions | L1 200 L2 184 L3 115 φ1 34 φ2 27 φ3 12 A 24 M 16 S.W.L 1650 kg |
| M24 Dimensions | L1 255 L2 214 L3 130 φ1 42 φ2 32 φ3 12 A 30 M 20 S.W.L 2600 kg |
| M30 Dimensions | L1 255 L2 251 L3 140 φ1 51 φ2 38 φ3 16 A 36 M 24 S.W.L 3400 kg |
| M36 Dimensions | L1 295 L2 300 L3 170 φ1 63.5 φ2 50 φ3 16 A 45 M 28 S.W.L 4800 kg |
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
- Cold-drawn seamless steel tube for consistent wall thickness and strength
- Hot-dipped galvanized coating applied after forming for long-term corrosion resistance
- Threaded screw rod made from the same seamless steel tube with precision threading
- Jaw ends formed from the same material and heat-treated to maintain strength
Manufacturing Process
How This Product Is Made
1Cold drawing of seamless steel tube to final dimensions
2Forming of jaw ends by drop forging or pressing
3Machining of internal threads on both ends of the screw rod
4Assembly of the closed pipe body and threaded rod
5Hot-dip galvanizing of the complete unit
6Stamping of working load limit and size on the body
7Proof load testing and final inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection for coating uniformity and defects
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at warehouse before shipment
Documentation
Certification And Documentation Supplied
- Material Test Certificate to EN 10204 3.1 supplied on request
- Working load limit and size stamped on the body for traceability
Customisation
Customisation Options
- Custom tonnage stamping on the body
- Private label and OEM marking available
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom sizes and thread configurations built to a supplied drawing
- Custom carton and pallet packing configurations for warehouse or retail use
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 |
|---|---|
| Open-body turnbuckle | The closed body prevents debris ingress and maintains cleaner operation, but is less accessible for inspection and adjustment |
| Eye end turnbuckle | Jaw ends allow direct attachment to flat surfaces or hooks, while eye ends require a shackle for connection |
| Hook end turnbuckle | Jaw ends provide a more secure and stable connection to anchor points than hook ends under dynamic loads |
| Screw pin shackle | The turnbuckle provides continuous tension adjustment, while a shackle is fixed once installed |
Use Guide
How To Use And Inspect DIN 1478 Turnbuckle
- Use only in tension; do not apply shear or bending loads
- Ensure both jaw ends are fully engaged with the anchor point or fitting
- Adjust tension by turning the central screw until the desired line tightness is achieved
- Check the working load limit stamping matches the expected load before use
- Inspect the galvanized coating for damage; replace if coating is compromised
- Retire the turnbuckle if the body shows deformation, threads are stripped, or the marking is illegible
Related Products
Often Ordered With This Item
HD Turnbuckle Jaw Jaw, Heavy Duty Turnbuckles
Stainless Steel Turnbuckle H/E, H/H, E/E
Aluminum Body Turnbuckle Hook and Eye Alu Closed Body
Aluminum Turnbuckles Eye and Eye Alu Closed Body
Aluminum Turnbuckle Hook and Hook Alu Closed Body
Wire Rope Turnbuckle Commercial Type Malleable Steel
Turnbuckles hook and hook Commercial Type Malleable Steel
Galvanized Turnbuckle Eye/Eye Commercial Type Malleable Steel
Browse The Category
Industries Using This Product
Sourcing Support For This Product
Guides Worth Reading Before You Order
Answers
DIN 1478 Turnbuckle FAQ
Can this turnbuckle be used in shear or bending?
No. It is designed for tension only. Using it in shear or bending may cause failure.
What is the design factor for these turnbuckles?
A standard 4:1 design factor is used, so the minimum breaking load is four times the safe working load.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
Can you custom stamp our brand and tonnage?
Yes. Custom tonnage stamping, private label marking, and OEM packaging are standard options.
What finish options are available?
Standard finish is hot-dipped galvanized. Custom options include zinc plating, powder coating, and electrophoretic black.
How are they packed for export?
Cartons or gunny bags on pallets as standard. We can configure carton count and pallet pattern to match your warehouse or retail pack.
What sizes are available?
Sizes range from M6 to M36 thread size. The size table includes dimensions L1, L2, L3, φ1, φ2, φ3, A, M, and S.W.L for each size.
Need A Quote On DIN 1478 Turnbuckle
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.