Turnbuckles
Heavy Duty Turnbuckle US Type Jaw to Jaw HG-228
A heavy-duty US type jaw-to-jaw turnbuckle made from forged carbon steel or stainless steel, designed for high-load tensioning in overhead lifting, lashing, and towing applications. It features a robust jaw end on both sides for secure connection to eye or hook fittings, with a hot-dipped galvanized finish to resist corrosion in harsh environments. Available in sizes from 1/4"x4" to 2-3/4"x24", with working load limits from 400 lbs to 37,000 lbs, and a 5:1 safety factor built into the design.
- Size
- From 1/4"x4" to 2-3/4x24
- Material
- Carbon Steel / Stainless Steel Surface: Hot Dipped Galvanized W.L.L: From 400 lbs Tons to 34000 lbs
- Standard
- US Type
- 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 Heavy Duty Turnbuckle Gives You
- Handles high tension loads in overhead lifting and heavy-duty lashing with a 5:1 safety factor and 2.5 times proof load testing
- Jaw-to-jaw configuration allows secure attachment to eye, hook, or stub end fittings without needing separate shackles
- Hot-dipped galvanized finish resists rust and corrosion in marine, outdoor, and industrial environments
- Forged carbon steel or stainless steel construction provides strength and durability under repeated stress
- Consistent thread engagement across the full length of the barrel ensures reliable tensioning without slippage
- Available in multiple sizes and lengths to suit lifting, rigging, and towing setups from small to large scale
- Reduces the need for multiple fittings by combining tensioning and connection in one component
Application Scenarios
Where Heavy Duty Turnbuckle Is Used
- Overhead lifting operations in construction and industrial facilities where stable tension must be maintained across multiple rigging points
- Marine and offshore applications involving mooring lines, anchor systems, and deck lashing under saltwater exposure
- Heavy transport and trailer tie-downs where consistent tension is needed on cargo secured with ratchet straps or chains
- Towing and recovery setups using winches and cable systems where adjustable length and high strength are required
- Temporary rigging installations in infrastructure projects where load distribution and alignment must be fine-tuned
Who It Is For
Buyers This Product Is Built For
- Industrial rigging contractors specifying durable tensioning hardware for crane and lift operations
- Marine equipment suppliers equipping vessels and offshore platforms with corrosion-resistant rigging
- Transport and logistics companies securing heavy cargo on flatbed trailers and containers
- Construction firms managing temporary structures and suspended loads with adjustable tension
- Rigging distributors carrying a full range of turnbuckles who need a high-capacity, corrosion-resistant option
Problems It Solves
Problems This Product Removes
- Inconsistent tension in lashing systems due to slippage or deformation in standard turnbuckles under heavy load
- Corrosion damage to rigging hardware in marine or outdoor environments leading to premature failure
- Need for multiple fittings (shackles, turnbuckles, hooks) when a single tensioning point with dual jaw ends would suffice
- Lack of traceability and safety verification in turnbuckles sourced from unverified suppliers
- Difficulty in adjusting tension over long distances without compromising strength or stability
- Reliance on low-grade materials that fail under repeated or dynamic loading conditions
Technical Features
Technical Features
- Forged carbon steel or stainless steel body with a jaw end on both sides for secure connection
- Hot-dipped galvanized surface finish for enhanced corrosion resistance in harsh conditions
- 5:1 safety factor with proof load tested
- Working load limit stamped on the barrel for field traceability and compliance
- Threaded barrel with consistent pitch for reliable and repeatable tension adjustment
- Jaw ends designed to accept eye, hook, or stub end fittings without additional hardware
- Available in sizes from 1/4”×4” to 2-3/4”×24” with working load limits up to 37,000 lbs
Specifications
Heavy Duty Turnbuckle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 400 lbs to 37,000 lbs working load limit |
|---|---|
| Material | Forged carbon steel or stainless steel |
| Surface Finish | Hot-dipped galvanized |
| Design Factor | 5:1 standard |
| Proof Load | the published multiple of the working load limit |
| Breaking Load | the published multiple of the working load limit |
| Size Range | 1/4”×4” to 2-3/4”×24” |
| Jaw Configuration | Jaw to jaw with threaded barrel |
| WLL Marking | Stamped on the barrel for traceability |
| Certificates | Material Test Certificate to EN 10204 3.1 on request |
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
- Forged carbon steel body for high tensile strength and impact resistance
- Stainless steel option available for use in highly corrosive environments
- Hot-dipped galvanizing layer applied after forging to protect against rust and weathering
- Threaded barrel made from heat-treated steel to maintain integrity under repeated tensioning
Manufacturing Process
How This Product Is Made
1Forging of the barrel and jaw ends from carbon steel or stainless steel billets
2Heat treatment to improve strength and ductility after forging
3Machining of threads and jaw surfaces to precise tolerances
4Hot-dip galvanizing of the finished component for corrosion protection
5Stamping of working load limit and product marking on the barrel
6Proof load testing on production batches before packing
7Final inspection and packaging for export
Quality Control
Quality Control On Every Batch
- Proof load test performed on each production batch at the published multiple of the working load limit
- Dimensional tolerance check against published size table for barrel length and jaw fit
- Breaking strength validation to confirm the 5:1 design factor
- Visual and tactile inspection of galvanizing layer for uniformity and coverage
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Documentation
Certification And Documentation Supplied
- Material Test Certificate to EN 10204 3.1 supplied with orders on request
- Working load limit marking stamped on the barrel for traceability
Customisation
Customisation Options
- Custom tonnage stamping on the barrel for client-specific load ratings
- Private label and OEM marking available for brand-specific packaging
- Surface finish options including zinc plating, powder coating, or electrophoretic black
- Custom sizes and lengths built to a supplied drawing
- Packing configuration tailored to 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 |
|---|---|
| Standard turnbuckle | The heavy-duty version has a higher safety factor, stronger material, and better corrosion resistance for demanding industrial and marine use |
| Hook-to-hook turnbuckle | Jaw-to-jaw offers a more secure connection to eye or stub end fittings and better load distribution across the jaw interface |
| Screw pin shackle | The turnbuckle provides adjustable length and tensioning capability that a fixed shackle cannot match |
| Ratchet strap | The turnbuckle delivers higher load capacity and more stable tension over time compared to the elastic nature of a ratchet strap |
Use Guide
How To Use And Inspect Heavy Duty Turnbuckle
- Verify the stamped working load limit matches the calculated load, not the equipment rating
- Ensure both jaw ends are fully engaged with the connected fitting to prevent slippage
- Tighten the barrel evenly with a wrench to avoid side loading or thread damage
- Inspect the galvanized coating regularly for damage, especially in abrasive or corrosive environments
- Retire the turnbuckle if the barrel shows deformation, the threads are stripped, or the marking is illegible
- Do not exceed the maximum take-up length specified for each size to maintain structural integrity
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
Heavy Duty Turnbuckle FAQ
What is the safety factor on these turnbuckles?
A 5:1 safety factor is standard, meaning the minimum breaking load is five times the stated working load limit. Proof load testing is done at the published multiple of the working load limit.
Can I use this turnbuckle in marine environments?
Yes. The hot-dipped galvanized finish provides strong resistance to saltwater and weather. Stainless steel is also available for more aggressive marine service.
Is the working load limit stamped on the barrel?
Yes. Every turnbuckle has the working load limit stamped on the barrel for traceability and field verification.
What certificates are provided with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. All batches are proof load tested and dimensionally checked.
Can you custom stamp our brand and tonnage?
Yes. Custom tonnage stamping, private label marking, and OEM packaging are standard options.
How are they packed for export?
Cartons or gunny bags on pallets as standard. We can configure the packing to match your warehouse or retail needs.
What sizes are available?
Sizes range from 1/4”×4” to 2-3/4”×24” with working load limits from 400 lbs to 37,000 lbs. The full size table is available in the product data.
Need A Quote On Heavy Duty 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.