Heavy Duty Turnbuckle – Knob Type
— Reliable Container Lashing Equipment for Marine Cargo Securing—
Technical Specification of Turnbuckle Hook and Jaw
- Model: BA-K1
- Weight: 13.5KG
- Length Adjustment: 1080mm-1490mm
- Safe Working Loads: Tension 250KN
- Breaking Loads: Tension 500KN
- Material: Heat Treatable Steel
- Finish: Hot Dip Galvanized
- Class Approval: ABS, DNV-GL, CCS, Others
- Category: Loose Fittings on Deck
- Tags: Container Parts, Container Stevedoring, Stevedoring, Twist Locks, Twist Locks; Turnbuckle Type; Turnbuckle Knob; Heavy Duty Turnbuckle
* Can be customized according to your needs, type and test class approved on request.
Product Overview
Structure Composition
- One end is a Fork End, which can be secured to lashing fittings, ear plates, or D Rings using a pin shaft.
- The other end features a Knob Type Adjustment End for easy operation and locking.
- The middle section consists of two parallel tie rods with a threaded adjustment mechanism, allowing length adjustment between 1080 and 1490 mm. The surface features integrated raised anti-slip knobs, with reverse threads (left-hand and right-hand) built into both ends, allowing 360° hand rotation operation without any tools;
The Turnbuckle Knob Type is a heavy duty turnbuckle designed for container lashing systems, heavy cargo securing, and industrial fastening. As one of the widely used turnbuckle types, it functions as a tensioning device—by rotating the threaded body, the lashing rod can be tightened or loosened to generate the necessary tension that keeps containers securely fixed to the ship’s deck.
This container turnbuckle features a prominent knob end, which can be inserted into the corresponding hole of the lashing rod. By rotating the body, the lashing tension can be precisely adjusted. When used together with other lashing equipment, it ensures containers remain stable during transportation, minimizing the risk of shifting or damage.
OLIPORTS’s turnbuckles are manufactured from heat-treatable steel and finished with hot dip galvanizing, it offers excellent corrosion resistance for harsh marine environments. The knob-type adjustment mechanism not only improves tensioning accuracy but also enhances operational efficiency, making it an essential component in marine and port cargo securing operations.
Drawings and Features of Turnbuckle Knob
Key Features
Note: The turnbuckle for lashing bars is used to connect and secure the swivel head lashing bar to the lashing plate or D-ring. It is designed to withstand tensile loads.
- Adjustable Length – 1080 mm to 1490 mm adjustment range for versatile lashing setups.
- Knob-Type Adjustment – Faster and more precise operation compared to other turnbuckle types.
- Secure Fork Connection – Fork end with pin and nut ensures stable and safe attachment.
- Easy to weld, compact footprint
- Compatible with marine lashing systems
- Weldable & Class Approved: Meets ABS, DNV-GL, CCS, and ISO standards
Recommended Accessories for Turnbuckle Knob
To achieve optimal tensioning and system stability, Turnbuckle Knobs are commonly used with the following complementary products. OLIPORTS recommended items meet international quality standards and are suitable for maritime, transportation, and heavy industrial applications.
Application
Maritime and Shipping Industry – Container lashing systems, onboard cargo securing, and installation and fixation of heavy maritime equipment.
Industrial Heavy-Duty Securing – Fastening of large machinery and steel structures in factories, ports, and construction sites.
Transportation and Logistics – Securing oversized and heavy cargo during transport to ensure safety.
Why OLIPORTS?
At OLIPORTS, we manufacture container securing components with unmatched engineering precision and industry know-how.
With over a decade of manufacturing and global distribution experience, OLIPORTS has developed deep expertise in container lashing and cargo securing systems. We fully understand the design drawings, structural layouts, and mechanical calculations behind every container ship’s securing solution — allowing us to respond quickly and accurately to your technical requirements.
- Deep understanding of ship drawings and classification standards
- Over 10 years of global lashing system supply experience
- Support for custom layouts to match your vessel and route
- Certified by CCS, ABS, DNV-GL, and compliant with ISO 3874 / ISO 1161
- Fast quote turnaround and fewer sample revisions
- Trusted by yards, shipowners, and retrofit contractors worldwide
Built to perform. Certified to last. Delivered on time. Our in-house design and fabrication capabilities ensure fast delivery, high compatibility, and long-term durability.
Request a Quote or Drawing
We offer: Technical Datasheet PDF、Material Certificates、DWG or STEP files for design integration、On-request layout support. Our lashing experts typically reply within 24 hours.
