CTSC 3/8" Galvanized Steel Jaw & Jaw Turnbuckle – CTSC
CTSC 3/8" Galvanized Steel Jaw & Jaw Turnbuckle (Up to 3,500 lbs)
"Essential hardware for any backyard zip line. Made tensioning our 100ft cable effortless, and the galvanized finish shows zero rust after months outdoors." — Verified Buyer (★★★★★ 4.9/5 from 33 reviews)
🎁 Bundle & Save: Buy any 2 accessories and automatically get 10% off at checkout! Plus, use code HALLOWEEN10 for additional seasonal savings and free US shipping on orders over $99.
Eliminate dangerous cable sag and fine-tune your backyard zip line with the CTSC 3/8" Jaw & Jaw Turnbuckle. Engineered from drop-forged, hot-dipped galvanized carbon steel, this heavy-duty rigging tensioner delivers a 3,500 lbs Working Load Limit (WLL) and an exceptional 10,500 lbs Ultimate Breaking Strength. Featuring closed jaw ends with removable clevis pins and safety cotter pins on both sides, it locks securely to tree sling cables, eye bolts, and wire rope thimbles for safe, rock-solid tensioning season after season.
⚙️ Heavy-Duty Rigging & Precision Tensioning Features
- 3,500 lbs Working Load Limit: Engineered to withstand high-tension dynamic loads from backyard zip lines, cargo lines, and cable runs.
- Hot-Dipped Galvanized Steel: Heavy zinc-coated finish resists rust, salt air, rain, and extreme seasonal temperature swings.
- Dual Jaw & Clevis Pin Security: Removable alloy steel clevis pins with locking cotter pins ensure permanent anchor retention with zero risk of accidental unhooking.
- 12" Body with Smooth Threading: Deep acme threads provide over 8 inches of continuous adjustment travel, making cable tightening simple with a standard wrench.
- Certified Safety Engineering: Fully compliant with CE, RoHS, and EN71 international rigging safety standards.
- Multi-Use Utility: Ideal for zip line main cables, tree sling anchor lines, guy-wire stabilization, sailboat rigging, and structural fencing.
📏 Specifications & Sizing
| Thread Diameter | 3/8 Inch (9.5 mm) Carbon Steel |
| Working Load Limit (WLL) | 3,500 lbs (1,588 kg) |
| Ultimate Breaking Strength | 10,500 lbs (4,760 kg) |
| Body Length & Adjustment | 12" Barrel (approx. 8" of active tensioning travel) |
| End Fittings | Dual Jaw (Fork) with Clevis Pins & Safety Cotter Rings |
| Corrosion Protection | Hot-Dipped Galvanized Zinc Coating (ASTM A153 standard) |
📦 What's Included in the Box
- 1 × CTSC 3/8" Hot-Dipped Galvanized Jaw & Jaw Turnbuckle
- 2 × Removable Alloy Steel Clevis Pins
- 2 × Heavy-Duty Split Cotter Pins
🤝 CTSC Quality & Guarantees
- 1-Year Manufacturer Warranty on all structural steel and threading
- 30-Day Money-Back Guarantee
- Free Express US Shipping on all orders over $99 (delivered in 3–4 business days)
❓ Frequently Asked Questions
Q: What is the benefit of Jaw & Jaw turnbuckles over Hook & Eye turnbuckles?
A: Jaw & Jaw turnbuckles are much safer for zip lines because the closed jaw is secured with a threaded clevis pin and cotter pin. Unlike open hooks, closed jaws can never slip off under cable bounce or high dynamic loads.
Q: How do I install this turnbuckle during zip line setup?
A: Extend the turnbuckle fully before attaching it between your tree anchor sling and the main cable. Once your cable clamps are torqued down, turn the turnbuckle body to draw both jaws together, dialing in your final tension easily.
Q: What size zip line cables is this 3/8" turnbuckle best for?
A: It is ideal for standard 3/16" (5mm) and 1/4" (6mm) backyard zip line cables with spans up to 150 feet.
- Supports up to 800lbs
- CE & RoHS Certified
- Designed and tested with your safety in mind.
1、In order to make your order to arrive more quickly and securely, we will deliver the goods within 24 hours after receipt of order payment. Please ensure that your order address is correct.
2、Before delivery, we will inspect and pack the goods to ensure that the goods received by our customers are in good condition. If there are any problems with the goods, please contact us at the first time.
3、We offer free delivery service,express delivery is estimated to be delivered within 3-4 days.The shipping time during Holiday Season (Christmas etc) could be longer than usual time. Please add another 5-10 days as a delay.
Note：if your shipping address is in a remote area, the express delivery service will require additional delivery costs, and we will not pay for this freight. So we will contact you for the first time, and you need to pay the freight, then we will deliver the goods.
We promise to do the right thing. Over the years, every decision and product we make is focused on customers. Our goal is to bring more joy to those who believe in us. We should be responsible for doing the right thing and the right way.
The products we produce bring laughter to our customers, and we are truly proud of them. If our products cause trouble to our customers, we sincerely feel sorry and try our best to make up for our mistakes. Customer satisfaction is our eternal pursuit.
We promise never to exaggerate the quality of our products. We strictly test every product to ensure that it meets the safety standards and passes the quality certification.
We promise if there are any problems with our products, please contact us in the first time, or you can request a return or refund within 30 days of receiving the product, but please contact us before returning，you just pay for the return shipping. No strings attached.
After using our products，if you are satisfied with our products and services, please 5 stars, if you are not satisfied, please contact us at the first time, we will handle it for you and make you satisfied.
1、Please strictly follow the instructions and ensure the installation is solid.
2、Kids under the age of 10 need to use zipline under the guidance of adults or guardians.
3、Strictly follow kids and adults with a weight limit of 250 pounds.
4、Heart disease and hypertension patients, pregnant women, please do not use products, in order to avoid accidents.
5、Installation between two trees or ends is required, and there is a clear runway between the two without shelter, preferably with a slight slope in the middle of the runway.An end-to-end slope of 3-6%.
Instruction Book Installation Manual: For Installation Video Please See Blog
