Straining Screws

Straining screws (also known as riggingscrews) are a simple piece of equipment used to adjust the tension of wires or to secure loads.

How do straining screws work?

To use a straining screw, you attach the wires than need to be tensioned to the fittings at either end. Rotating the body of the straining screw pulls the ends towards one another, causing the wire to tighten, or away from each other, causing it to loosen. This piece of equipment can have different ends depending on your needs – hooks, eyes or jaws, or a combination of two of these. Jaws usually have pins to keep them securely in place.

What are straining screws used for?

Straining screws are used in applications where a wire needs to be held at a certain tension. They can also vary in size, depending on the size of the wire. You'll have seen them in action on the ropes around a boxing ring or the cables of a suspension bridge.

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Description Price Material Finish End Fittings Thread Size Working Load Limit Weight Eye Diameter Closed Length End A Fitting End B Fitting Open Length
RS Stock No. 183-5942
Stainless Steel Electro Polished Jaw to Jaw M5 - 900g 5mm 130mm Jaw Jaw 190mm
RS Stock No. 183-5958
Stainless Steel Electro Polished Jaw to Jaw M8 - 160g 8mm 165mm Jaw Jaw 240mm