Rigging Hardware
Hover an image to enlarge it, click to open it full size.
Toco Lifting supplies drop forged turnbuckles and rigging screws to DIN 1480 across South Africa and the SADC region, in sizes from 6 mm to 48 mm, with commercial and stainless steel versions also stocked. A turnbuckle has an open body that exposes the threaded section; a rigging screw has a closed body. Both are used to tension and adjust wire rope, cable, tie rods and other tensioning systems, in eye and eye, hook and hook and hook and eye configurations. They are lifting tackle and are supplied with a Conformance Inspection Certificate.
Turnbuckles
Turnbuckles have an open body, exposing the threaded section. Drop forged to DIN1480, with sizes ranging from 6mm to 48mm. Toco also stocks Commercial and Stainless Steel turnbuckles.
Rigging Screws, drop forged
Rigging Screws have a drop-forged closed body with lock nuts, with sizes ranging from 10mm to 64mm. Toco also stocks Stainless Steel and Drop Forged Extra Long Open Body Rigging Screws.
Buying for a site outside South Africa? Supplied Ex Works Germiston to buyers across the SADC region: how export supply works.
Turnbuckles and Rigging Screws are devices used in the tensioning of wire ropes, cables, tie rods and other tensioning systems, used with chain, steel wire rope and synthetic ropes in various industries such as the transport industry.
Turnbuckles
Rigging Screws
The two names are often used interchangeably and they do the same job, but the bodies differ and it matters in service:
Both are drop forged to DIN 1480 in Toco's stocked range, from 6 mm to 48 mm thread diameter, with commercial and stainless steel versions available.
Rated load falls as you move from eye and eye to hook and eye to hook and hook, because the hook becomes the limiting component. A hook is faster to connect; an eye cannot come adrift if the assembly goes slack. Where the assembly can lose tension in service, specify eyes.
Turnbuckles and rigging screws are used alongside steel wire rope, bow and dee shackles and eyebolts and eyenuts in tensioning assemblies.
Send the load, the take up you need and the configuration. Call 011 345 8800 or email [email protected].
The body. A turnbuckle has an open body, so the threaded section of each end fitting is visible and can be inspected at a glance. A rigging screw has a closed or pipe body that encloses the threads, which protects them from dirt and impact but hides them from inspection. Both do the same job of tensioning and adjusting, and both are drop forged to DIN 1480 in Toco's stocked range.
Thread diameters from 6 mm to 48 mm, drop forged to DIN 1480, with commercial and stainless steel versions also available. Rated loads rise steeply with thread size, so always work from the figure for the exact size you are ordering rather than from a general impression of the range.
Eye and eye, hook and hook, and hook and eye are the common configurations. An eye is a closed connection and is the safer choice wherever the assembly could go slack or be disturbed in service. A hook is quicker to connect but can unhook if tension is lost, so hook ends should not be used where the load can slacken.
No. The rated load for a hook and hook or hook and eye assembly is materially lower than for the same size in eye and eye, because the hook is the limiting component. Confirm the rating for the exact configuration you are ordering.
A turnbuckle or rigging screw is lifting tackle rather than a lifting machine, so it cannot suspend or halt motion once input energy stops. It is supplied with a Conformance Inspection Certificate where a certificate is required, with a Mill Certificate on request where a material trace is needed.
A turnbuckle is a tensioning and adjusting device in a rigging assembly, not a lifting attachment in its own right. Used within a properly designed assembly and inside its rated load it carries load safely; used as a substitute for a rated sling or connector it is out of its purpose. Tell the team what the assembly has to do and they will specify it.
Bow Shackles Drop forged Bow Shackles manufactured to US Federal Specification RR-C-271b, with sizes ranging from 0.5 ton to 150 ton. Dee Shackles Drop forged Dee Shackles manufactured to US Federal Specification RR-C-271b, with sizes ranging from 0.5 ton to 120 ton. Large Dee Shackles Manufactured to British Standard Specification 3032, with sizes ranging from 0.5 ton to 20 ton.
Galvanised drop forged eyebolts and eyenuts are mostly used in electrical motors and machined shafts.
Ratchet and lever type load binders for 10 mm and 13 mm Grade 70 transport chain to SANS 52195-3. Working load limit confirmed per model. Supplied with a Conformance Inspection Certificate.
Send the load, the lift and the duty cycle. The right unit comes back priced.
