Premium Rigging Screws & Turnbuckles

Proboat is the official UK distributor of the world-renowned Blue Wave range of rigging screws and turnbuckles. We stock UNF and metric sizes from 1/4 inch to 1 3/8 inch and M5 to M36, with break loads ranging from 800kg to 42,000kg. Also known as wire rope adjusters or barrel strainers, these essential components provide precise tension control for marine rigging, architectural cable systems, and industrial applications.

The QRT Quick Race Tune Rigging Screws feature a calibrated stainless steel body with a chrome bronze adjuster nut, making them particularly popular with Olympic-class racing dinghies such as the 49er and 29er.

Materials and Construction

All Blue Wave rigging screws are manufactured from high-quality materials to meet and exceed stringent design, weight, and breaking load standards. Options include:

• AISI 316 stainless steel – excellent corrosion resistance in marine environments

• Polished chrome-plated bronze – combines strength with aesthetic appeal

• Galvanised steel – suitable for traditional working boats and industrial applications

Each component is precision engineered, from standard electro-polished fittings to high-performance CNC-machined parts, ensuring reliability under extreme conditions.

Variety of End Fittings

Our rigging screws and turnbuckles come with a wide range of end fittings to suit any installation:

• Forks

• Toggles

• Eyes

• Swage terminals

• Swageless terminals

Laser-engraved markings on each body indicate thread size and left-hand threads. For swage terminals, wire size and depth are also marked, allowing for fast and accurate installation.

Open-Body Chrome Bronze Rigging Screws

The Blue Wave open chrome bronze bodies are favoured in the marine industry because the combination of a chrome bronze body with stainless steel end fittings prevents threads from seizing, ensuring smooth adjustment over time.

Safety Guidelines

For safety and durability:

• Working load limit (WLL): Do not exceed 20% (1/5) of the breaking load

• Regular inspection and maintenance are recommended, especially for critical marine or industrial installations

Applications

• Marine rigging: Shrouds, stays, lifelines, sail tension

• Industrial tensioning: Wire rope adjusters for construction and load-bearing systems

• Performance sailing: QRT rigging screws for fine-tuning Olympic-class dinghies