Turnbuckles
3 8 Turnbuckle US Type Forged Hook/Eye/Jaw
A forged carbon steel or stainless steel turnbuckle with a 3/8-inch diameter threaded rod and 6-inch take-up length, available with hook, eye, or jaw ends. It provides adjustable tension in overhead lifting, lashing, and towing applications. The 5:1 safety factor ensures reliable performance under load. Standard finishes include hot-dipped galvanizing, SS304, and SS316. Supplied in cartons or gunny bags on pallets.
- Size
- 3/8"x 6
- Material
- Carbon Steel/Stainless Steel Surface: Hot Dipped Galvanized/SS304/316 W.L.L: 1000 lbs
- 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 3 8 Turnbuckle US Type Forged Hook Gives You
- Adjustable tension in rigging systems with a 6-inch take-up length for fine-tuning
- 5:1 safety factor on the 3/8 x 6 size, with a working load limit of 1,000 lbs
- Forged construction in carbon steel or stainless steel for high impact resistance
- Available with hook, eye, or jaw ends to suit different connection needs
- Hot-dipped galvanized, SS304, or SS316 finish for corrosion resistance in harsh environments
- Single purchase order covers multiple end configurations, reducing sourcing complexity
- Standardized dimensions and WLL stamped on the body for traceability and field use
Application Scenarios
Where 3 8 Turnbuckle US Type Forged Hook Is Used
- Overhead lifting setups where tension must be adjusted during rigging
- Cargo lashing on trucks and trailers using hook-and-eye or eye-eye configurations
- Towing and recovery operations requiring adjustable tension on winch lines
- Marine mooring and anchoring where corrosion resistance is critical
- Industrial rigging where frequent disassembly is needed at one end and not the other
- Temporary structures and scaffolding requiring tension control in guy wires
Who It Is For
Buyers This Product Is Built For
- Procurement engineers sourcing rigging hardware for offshore or marine projects
- Logistics and transport companies specifying lashing hardware for freight containers
- Cranes and rigging contractors needing adjustable tension fittings with traceability
- Manufacturers of industrial equipment requiring custom turnbuckle configurations
- Marine and offshore service providers specifying corrosion-resistant rigging components
Problems It Solves
Problems This Product Removes
- Need for multiple suppliers when sourcing turnbuckles with different end types
- Inconsistent tension control in rigging systems due to fixed-length fittings
- Corrosion damage in outdoor or marine environments from uncoated steel
- Lack of traceability and safety factor verification in low-cost turnbuckles
- Inadequate strength or fatigue resistance in non-forge or stamped components
- Difficulty in adjusting tension during installation without re-threading or replacing parts
Technical Features
Technical Features
- Forged carbon steel or stainless steel construction for high strength and impact resistance
- 3/8-inch diameter threaded rod with 6-inch take-up length
- 5:1 safety factor with minimum breaking load five times the working load limit
- Available with hook, eye, or jaw end configurations
- Working load limit of 1,000 lbs for the 3/8 x 6 size
- Hot-dipped galvanized, SS304, or SS316 surface finish options
- WLL and safety factor stamped on the body for field traceability
- Standardized dimensions: A 0.38 in, D 0.56 in, E/Close 2.3 in, F 1.77 in, J/Open 16.98 in, K/Close 10.98 in, M/Open 17.94 in, N/Close 2.52 in, S 0.53 in
Specifications
3 8 Turnbuckle US Type Forged Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Safety Factor | 5:1 minimum breaking load to safe working load |
|---|---|
| Thread Diameter | 3/8 inch |
| Take-Up Length | 6 inches |
| Material | Carbon steel or stainless steel |
| Surface Finish | Hot-dipped galvanized, SS304, or SS316 |
| End Types | Hook, eye, jaw, or combinations |
| Weight | 0.78 lbs per unit |
| Dimensions | A 0.38 in, D 0.56 in, E/Close 2.3 in, F 1.77 in, J/Open 16.98 in, K/Close 10.98 in, M/Open 17.94 in, N/Close 2.52 in, S 0.53 in |
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 forged body with heat treatment for strength and durability
- Stainless steel option for high corrosion resistance in marine or chemical environments
- Hot-dipped galvanizing layer for outdoor and industrial use
- SS304 and SS316 finishes for saltwater and aggressive chemical exposure
- Threaded rod precision machined to ensure smooth operation and load transfer
Manufacturing Process
How This Product Is Made
1Forging of the turnbuckle body and end fittings from carbon or stainless steel
2Heat treatment to enhance strength and fatigue resistance
3Machining of threads and end features to exact dimensions
4Surface finishing by hot-dip galvanizing, polishing, or passivation
5WLL and safety factor stamping on the body
6Proof load testing on production batches
7Final inspection and packing in cartons or gunny bags
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm the 5:1 design factor
- Visual inspection for surface defects, thread integrity, and finish quality
- 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
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom end configurations built to a 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 |
|---|---|
| Stamped or cast turnbuckle | Forged construction offers higher strength and impact resistance, with better fatigue life and traceability |
| Non-galvanized steel | Hot-dipped galvanizing extends service life in outdoor and marine environments |
| Single-end turnbuckle | Dual-end configurations allow for more flexible rigging setups and easier adjustment |
| Metric turnbuckle | US standard 3/8 x 6 size fits existing US and international rigging systems with compatible fittings |
Use Guide
How To Use And Inspect 3 8 Turnbuckle US Type Forged Hook
- Match the stamped WLL to the calculated load, not the equipment rating
- Ensure the turnbuckle is fully engaged at both ends before applying tension
- Use the correct wrench size to avoid thread damage during adjustment
- Inspect the threads and finish regularly for signs of wear or corrosion
- Do not exceed the 5:1 safety factor; use the 1,000 lbs WLL for the 3/8 x 6 size
- 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
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Answers
3 8 Turnbuckle US Type Forged Hook FAQ
What is the working load limit for the 3/8 x 6 turnbuckle?
The safe working load is 1,000 lbs with a 5:1 safety factor.
Can I get this turnbuckle in stainless steel?
Yes, it is available in stainless steel with SS304 or SS316 finish for corrosion resistance.
What finishes are available?
Standard finishes include hot-dipped galvanized, SS304, and SS316. Custom finishes like powder coating or electrophoretic black are also available.
Is the WLL stamped on the body?
Yes, the working load limit and safety factor are stamped on the body for traceability in the field.
Can you supply custom end configurations?
Yes, custom end types such as hook, eye, jaw, or combinations can be built to a drawing.
How are they packed for export?
Standard packing is cartons or gunny bags on pallets. We can configure carton count and pallet pattern to suit your warehouse or retail pack.
What certificates come with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. Every batch is proof load tested with dimensional and breaking strength checks recorded.
Need A Quote On 3 8 Turnbuckle US Type Forged Hook
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