Turnbuckle open | eye/eye | A4 | M8246
Turnbuckle, jaw/jaw wire tensioner adjustable in A4 stainless steel is intended for use in corrosive and marine environments. The product is used where stepless length adjustment and controlled tensioning of wire rope, cable, or rigging are required. The eye/eye design provides a secure and closed attachment at both ends, reducing the risk of accidental disconnection. The construction allows for precise fine-tuning of tension and length without dismantling the connection. It is suitable for installations where high corrosion resistance, reliable function, and long service life are essential.
APPLICATION AREA
The product is used in marine rigging, wire systems, railing installations, structural engineering, and outdoor environments. It is intended for applications requiring adjustable wire tension, re-tensioning, and precise length setting, such as in wire railings, guy wires, and structural cable constructions. The eye/eye design is used where a permanent and secured attachment is desired at both ends, for example in combination with shackles or bolted connections. The material provides resistance to saltwater, moisture, and chemically aggressive environments.
TECHNICAL SPECIFICATIONS
Product type: Fitting
Product family: Turnbuckle
Material class: A4
Strength class: Not specified
Standard: Not specified
Thread dimension: M5–M20
Design: Eye/eye
Surface finish: Bright
Environment: Marine
Delivery unit: Piece
FREQUENTLY ASKED QUESTIONS (FAQ)
How does a turnbuckle with eye/eye work?
The turnbuckle's central body (sleeve) has a right-hand threaded side and a left-hand threaded side. When you turn the sleeve, both eyes are pulled together or pushed apart simultaneously. This allows you to steplessly and accurately adjust the tension in wire and chain connections without the wire itself rotating.
Why should one choose two eyes (eye/eye) instead of a hook?
A closed eye at both ends provides maximum safety in permanent and loaded installations. Unlike a hook, there is no risk of the line, shackle, or mount accidentally unhooking if the wire tension were to temporarily drop or in the event of strong movements and wind loads.
What does it mean that the turnbuckle is made of acid-proof A4 steel?
A4 steel (AISI 316 / 1.4401) contains molybdenum, which provides superior protection against corrosion, saltwater, and chemical exposure. The turnbuckle is therefore fully adapted for marine environments, boat rigging, railings, shade sails, and coastal outdoor constructions where standard steel materials would quickly rust.