Rigging Hardware Turnbuckles for Precision Adjustment
A turnbuckle is a mechanical device used to adjust the length or tension of ropes, cables, and tie rods without disconnecting the system. Its design features a central body with right-hand and left-hand threaded ends, allowing precise adjustment by rotating the frame.
Turnbuckles are essential rigging hardware in lifting, bracing, suspension, and anchoring systems where secure and accurate tension control is required.
Large In-Stock Inventory
Fast Shipping from Houston
Material Certifications Available
Types of Turnbuckles
The performance of a turnbuckle depends on the type of end fittings and the application requirements. Holloway Houston supplies multiple configurations to meet different rigging challenges.
Eye & Eye Turnbuckles
Both ends terminate in eye fittings. Used for connecting shackles, hooks, or wire rope in tensioning and alignment systems. Preferred in applications requiring inline adjustment without disconnecting the load path.
Hook & Hook Turnbuckles
Open hook ends on both terminals. Allows rapid connection and adjustment in temporary rigging setups. Best suited for non-permanent installations where frequent reconfiguration is required.
Jaw & Jaw Turnbuckles
Clevis jaw terminals secured with removable pins. Provides rigid connection to anchor points, structural fittings, or rod assemblies. Preferred for high-load anchoring and tie-rod applications.
Eye & Jaw Turnbuckles
One eye terminal, one clevis jaw terminal. Combines inline connection capability with rigid anchoring. Used where one end requires a shackle or hook, and the other attaches to a fixed structure.
Turnbuckle Jaw Ends
Replacement jaw fittings for field assembly or repair. Allows reconfiguration of existing assemblies without replacing the complete turnbuckle body.
Turnbuckle Locknuts
Locknuts prevent rotation under load or vibration. Used to maintain tension setting and prevent inadvertent adjustment during operation.
Turnbuckle Bodies
Center frame with internal right-hand and left-hand threads. Accepts various end fittings and provides rotational adjustment for tension control and length variation.
Turnbuckle Eye Ends
Eye terminals for connection to shackles, hooks, or wire rope. Used in field-assembled turnbuckle configurations requiring inline attachment points.
Turnbuckle Selection Guide
Working Load Limit
Turnbuckle selection begins with a working load limit. Choose a WLL rated above the maximum applied tension, accounting for dynamic loading and angle factors.
End Fittings
Hook fittings allow quick attachment. Jaw fittings provide strong connections to anchors or rods. Check the thread type and adjustment length to ensure it fits your setup.
Material Selection
Galvanized carbon steel provides corrosion resistance for standard industrial and outdoor use. Stainless steel is specified for marine, chemical, or high-humidity applications where aggressive exposure is expected.
Selection Best Practices
- Always match the turnbuckle size to the hardware it will connect to, not just the rope, cable, or rod. Proper selection makes your work safer and more efficient.
- Use lock nuts or pins to prevent loosening in vibration-prone setups.
- Check for thread exposure after tensioning , both ends should be evenly engaged.
- Proper selection makes your work safer and more efficient.
Turnbuckle Categories by Size and Capacity
Holloway Houston provides turnbuckles in multiple sizes and load capacities, offering flexible options for lifting, rigging, tensioning, and structural applications.
Take-Up Lengths
Offered in 6", 9", 12", 18", and 24" lengths, giving flexibility for short-range adjustments or longer stretches in lifting, rigging, and tensioning applications.
Working Load Limits(WLL)
Options range from light-duty applications to heavy-duty assemblies rated over 30 tons, designed to manage everyday lifting applications and major industrial lifting challenges.
Materials & Finishes
Available in galvanized carbon steel across most series. Stainless steel options are available on select series for marine, chemical, and high-humidity environments where corrosion resistance is critical.
Thread Options
Threads are typically UNC (Unified National Coarse). Availability varies by series and manufacturer—confirm on the product spec sheet.
Brands We Carry
To deliver proven reliability and compliance, Holloway Houston partners with world-class manufacturers :
Van Beest (Green Pin)
Green Pin, manufactured by Van Beest (Netherlands), produces precision-engineered turnbuckles recognized in construction, marine, and offshore industries. Products include material certifications and capacity documentation.
(Available in sizes up to 2-3/4" with 24" take-up (e.g., Green Pin JJ to ~34 tons WLL).
Crosby
Meets ASME B30.26 identification and proof-load criteria. Many HG models are fatigue-rated and traceable, with proof loads of 2.5× WLL and ultimate loads of 5× WLL per manufacturer specifications.
Applications of Turnbuckles
Turnbuckles are widely used across industries for adjusting tension, supporting structures, aligning loads, and securing cables in multiple rigging applications:
Marine
Industrial
Mining
Offshore (Oil & Gas)
Military
Theatrical Rigging
Construction
Outdoor Recreational
Utility
Heavy Lifting
How Turnbuckles Work
Each turnbuckle has opposite-hand threads (left-hand and right-hand) at either end. Rotating the body draws the end fittings together or apart, allowing controlled tensioning without detaching the system.
After achieving the desired tension, the fittings can be locked using nuts or pins to maintain stability. Regular inspection helps identify thread wear, corrosion, or deformation, all signs the component may need replacement.
For frequent or heavy-duty tensioning needs, chain hoists or mechanical jacks can complement turnbuckles in lifting operations.
Materials and Finishes
Turnbuckles are typically forged or machined from high-strength steel. Common finishes include:
- Galvanized Steel- for outdoor or industrial applications.
- Stainless Steel- for marine, offshore, or high-humidity environments
You can filter options by finish, WLL, or length in our product listings to match your system requirements.
Turnbuckle Safety and Awareness
ASME B30.26 requires durable manufacturer identification and rated load marking on turnbuckles. Standards and manufacturer charts indicate the following awareness points for turnbuckle use :
Best Practices :
Pre-use Condition : Standards indicate rigging hardware should be inspected each shift and removed from service if defective.
Stability & Post-test Condition : Where vibration is present, manufacturers offer locknuts and pins to maintain adjustment. Proof loads are commonly 2× WLL or higher per standard and manufacturer specifications, series-dependent.
Rated Use : Use within the Working Load Limit (WLL) shown on product identification. ASME B30.26 requires durable ID and marking.
Thread Engagement : Manufacturer specifications indicate minimum thread engagement requirements before loading.
Alignment : Turnbuckles are intended for straight-line tension. Side loading reduces capacity and is not indicated in manufacturer charts.
Replacement Criteria : Remove from service when damaged, worn, or deformed beyond manufacturer tolerances.
Turnbuckle Selection Guide
Choosing the right turnbuckle is important to make sure your lifting or rigging work is safe and effective. Start by looking at the working load limit (WLL) and pick a turnbuckle that can handle more than the load you plan to lift. Consider the type of end fittings: eye fittings connect to hooks or shackles, hook fittings allow quick attachment, and jaw fittings provide a strong connection to anchors or rods. Also, check the thread type and the adjustment length to make sure it fits your setup.
The material of the turnbuckle matters too. Galvanized steel works well for normal indoor or outdoor use, while stainless steel is better for marine or chemical environments where corrosion is a concern. Always match the turnbuckle size to the hardware it will connect to, not just the rope, cable, or rod. A proper choice will make your work safer and smoother.
Turnbuckle Safety Tips / Best Practices
- Inspect before use : Check for cracks, wear, or corrosion before each use.
- Do not overload : Never exceed the working load limit.
- Avoid side pressure : Use only for straight-line tension, not sideways force.
- Secure properly : Use locknuts or safety pins to prevent loosening under vibration or heavy loads.
- Lubricate threads : Apply light lubrication to make adjustments easier and reduce wear.
- Replace when damaged : Immediately replace any damaged or worn turnbuckles.
- Regular inspection : Consistent checks and proper handling extend lifespan and ensure safety.
Frequently Asked Questions
What size turnbuckle do I need?
Select a turnbuckle with a working load limit (WLL) rated above your maximum applied tension. Account for dynamic loading and angle factors. Our team can assist with configuration selection based on your specific application.
Do you stock Crosby and Green Pin turnbuckles?
Yes. We maintain in-stock inventory of Crosby and Green Pin turnbuckles in common configurations, available for shipment from our Houston warehouse.
What's the difference between galvanized and stainless steel turnbuckles?
Galvanized carbon steel provides corrosion resistance for standard industrial and outdoor use. Stainless steel is specified for marine, chemical, or high-humidity applications where aggressive exposure is expected. Stainless options are available on select series.
Can I use turnbuckles for overhead lifting?
Turnbuckles can be used in lifting operations when properly selected and inspected per ASME B30.26 guidelines. Ensure assemblies have rated capacity markings, use appropriate safety factors, and follow inspection intervals for your application. Construction sites also follow OSHA 29 CFR 1926.251.
What documentation comes with turnbuckles?
Turnbuckles from Crosby, Green Pin, and other major manufacturers are furnished with rated capacity documentation and material certifications. Proof-load testing records and mill test reports are available for products requiring additional documentation.
What's the difference between eye and jaw turnbuckles?
Eye ends terminate in forged rings for connecting to shackles or hooks. Jaw ends use clevis-style fittings with removable pins for connection to anchor points or structural fittings. Configuration depends on your connection requirements.
Complete Your Rigging System
Wire Rope Assemblies - Custom lengths and fittings
Shackles – For turnbuckle and rigging connections
Rigging Hardware – Eye bolts, clips, and related accessories
Chain Slings – Alloy chain systems for lifting applications
SAFETY
NOTICE
NOTICE
IMPORTANT DISCLAIMER
This page summarizes manufacturer data and industry standards for rigging hardware. It is not a substitute for engineering judgment. Confirm selection with ASME B30.26 and manufacturer documentation. Comply with OSHA 29 CFR 1926.251.