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Elegant Design, Exceptional Performance
From the unique design to the high grade materials and quality finish, Ronstan closed body
turnbuckles are engineered to deliver performance while enhancing the appearance of any yacht.
Type 2
• Type 2 closed body turnbuckles are traditional closed body turnbuckles with polished Chrome plated, high grade Brass bodies
and Grade 316 Stainless Steel end fittings. This combination of materials avoids the risk of excessive thread wear or
seizure under load, which can occur in turnbuckles with all Stainless Steel components. After tensioning, internally
tapered locking nuts secure the adjustment. Sight holes are provided in the bodies to verify adequate thread
engagement.
• For easy thread identification, a machined groove identifies the left-hand thread locking nut and body end.
Toggles are designed with full universal movement for easy installation and connection and allow the assembled
cable to move where the structure is subject to wind loads or vibration.
Type 1
• Type 1 closed body turnbuckles have a sleek, modern profile with no sharp edges. They are easily adjusted by
turning the unique coupling nut, which is free to rotate on the turnbuckle barrel, and are secured with a quick
turn on the cone shaped locking nut. A sight hole is provided in the coupling nut to verify adequate thread
engagement. With single end adjustment and a fine thread, Type 1 turnbuckles are much easier
to adjust than conventional turnbuckles, and the use of dissimilar but compatible metals for the
threaded components avoids the risk of thread seizure. Toggles are designed with full universal
movement for easy installation and connection and allow the assembled cable to move where the
structure is subject to wind loads or vibration.
Fine, Rolled Threads
Ronstan rigging fittings have rolled threads for maximum strength and reliability – unlike cut
threads, the stainless steel bar is formed up and down to create a thread with the grain remaining
unbroken and flowing up and down the threads. Threads are UNF (Unified National Fine), shor t
pitch threads for fine adjustment and reduced adjustment effor t.
Roll Swage Integrity
Swage fittings suit ‘roll swaging’ in Wireteknik
®
-type presses and dimensions are derived from the
original ‘Milspec’ for maximum integrity. They are suitable for use with modern and traditional wire
constructions, including 1x19, 7x19 and compact strand.
Termination Options
A full range of eye, fork and toggle fittings complements the turnbuckles to permit assembly of
finished rigging elements to suit vir tually any application.
Calibrated Turnbuckles
For accurate, repeatable settings of rig tension and precise adjustment, calibrated turnbuckles are
available for wire sizes up to 6mm (1/4”).
CLOSED BODY TURNBUCKLES
Type 1
Type 2
