Turnbuckles
DIN 1478 Jaw and Jaw Turnbuckle With Closed Pipe Body
A DIN 1478-compliant turnbuckle with jaw ends at both ends and a closed pipe body made from cold-drawn seamless steel tube. It provides adjustable tension in rigging systems by connecting to anchor points, hooks, or shackles. Available from M6 to M36 with working load limits from 230 kg to 4800 kg. Designed for use under tension only.
- 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 Jaw Gives You
- Closed pipe body with jaw ends allows secure attachment to shackles, hooks, or anchor points
- Cold-drawn seamless steel tube body resists deformation under repeated tension cycles
- Drop-forged construction enhances strength and impact resistance at the jaw and body junction
- Hot-dipped galvanized surface finish resists corrosion in outdoor and marine environments
- Adjustable tensioning without disassembly simplifies rigging setup and maintenance
- Standardized dimensions per DIN 1478 ensure interchangeability across rigging systems
- Jaw ends provide a stable grip on flat or round fittings without slippage under load
Application Scenarios
Where DIN 1478 Turnbuckle Jaw Is Used
- Tensioning wire rope or chain in marine mooring systems where corrosion resistance is critical
- Adjusting guy wires on temporary construction scaffolding or crane booms
- Securing cargo on trailers using adjustable tie-downs with consistent tension
- Rigging in shipbuilding where standardized components reduce on-site fabrication
- Stabilizing industrial structures during assembly or transport with precise tension control
- Setting up temporary rigging for stage or event equipment where load balance matters
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 structural bracing
- Logistics and transport operators building secure trailer tie-down systems
- Rigging distributors stocking standardized turnbuckles for industrial use
- Event and stage production teams needing reliable tensioning for rigging setups
- Industrial maintenance teams replacing worn or non-compliant turnbuckles
Problems It Solves
Problems This Product Removes
- Non-standard turnbuckles causing misalignment or failure during tension adjustment
- Corrosion damage on uncoated steel turnbuckles in wet or salty environments
- Slippage at connection points due to loose or poorly designed jaw fittings
- Inconsistent tensioning across multiple lines due to lack of standardized components
- Requiring multiple parts for tension adjustment when a single turnbuckle would suffice
- Buying turnbuckles from multiple suppliers with different thread sizes and end types
Technical Features
Technical Features
- Closed pipe body made from cold-drawn seamless steel tube
- Jaw ends at both ends for connection to shackles, hooks, or anchor points
- Drop-forged construction for enhanced strength and fatigue resistance
- Hot-dipped galvanized surface finish for corrosion protection
- Standardized dimensions per DIN 1478 for interchangeability
- Designed for use under tension only, not compression
- Working load limit stamped on the body for traceability
Specifications
DIN 1478 Turnbuckle Jaw Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Standard | DIN 1478 |
|---|---|
| Body Type | Closed pipe body |
| End Type | Jaw and Jaw |
| Material | Cold-drawn seamless steel tube |
| Process | Drop forged |
| Surface Finish | Hot-dipped galvanized |
| Capacity Range | 230 kg to 4800 kg safe working load |
| Size Range | M6 to M36 |
| 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 the pipe body with high tensile strength and uniform wall thickness
- Drop-forged jaw ends for improved load distribution and fatigue resistance
- Hot-dipped galvanizing layer for long-term corrosion protection in harsh environments
- Steel with tensile strength suitable for DIN 1478 compliance and rigging service
Manufacturing Process
How This Product Is Made
1Cold-drawing of seamless steel tube to precise outer diameter and wall thickness
2Drop forging of jaw ends to shape and strengthen the connection points
3Machining of threads and jaw surfaces to DIN 1478 tolerances
4Assembly of jaw ends onto the pipe body with full weld or mechanical fit
5Hot-dip galvanizing of the entire unit for corrosion resistance
6Proof load testing and dimensional inspection before marking
7Stamping of working load limit and material grade on the body
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against DIN 1478 specifications
- Breaking strength validation to confirm 4:1 design factor
- Surface finish inspection for uniform galvanization and no bare spots
- 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 for brand-specific packaging
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom sizes and jaw configurations built to a supplied drawing
- Packing carton and pallet configuration tailored to warehouse or retail 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 |
|---|---|
| Open body turnbuckle | The closed pipe body resists deformation and contamination better but is heavier and less accessible for inspection |
| Eye-end turnbuckle | Jaw ends provide a more secure grip on flat or round fittings but require precise alignment for full load transfer |
| Hook-end turnbuckle | Jaw ends offer greater stability under lateral load but are less convenient for quick attachment |
| Threaded rod with nuts | The turnbuckle allows faster adjustment and more even tensioning across a system |
Use Guide
How To Use And Inspect DIN 1478 Turnbuckle Jaw
- Use only in tension—do not apply compressive loads
- Ensure jaw ends are fully engaged on the connected component to prevent slippage
- Check the galvanized coating for damage before use; damaged areas may corrode faster
- Tighten both ends evenly to avoid twisting the body or misalignment
- Inspect the turnbuckle regularly for deformation, corrosion, or thread wear
- Replace the turnbuckle if the body shows bending, the jaws are cracked, or the marking is unreadable
Related Products
Often Ordered With This Item
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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
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Answers
DIN 1478 Turnbuckle Jaw FAQ
Is this turnbuckle suitable for marine use?
Yes. The hot-dipped galvanized finish provides corrosion resistance suitable for marine and outdoor environments.
Can I use this with shackles or hooks?
Yes. The jaw ends are designed to connect to shackles, hooks, or anchor points with a secure fit.
What is the design factor for these turnbuckles?
A standard 4:1 design factor applies, so the minimum breaking load is four times the stated safe working load.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
Can you customize the size or finish?
Yes. Custom sizes, tonnage stamping, private label marking, and surface finishes like powder coating or electrophoretic black are available.
How are they packed for export?
Standard packing is cartons or gunny bags on pallets. We can configure carton count and pallet pattern to match your warehouse or retail requirements.
What sizes are available?
The range runs from M6 to M36 with safe working loads from 230 kg to 4800 kg. Full dimensions and weights are listed in the specs.
Need A Quote On DIN 1478 Turnbuckle Jaw
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