304 A2 Stainless Steel Wire Rope 0.3mm-20mm LIFTING METAL CABLE 7x7-7x19

A 7×7 rope consists of 7 strands each containing 7 individual wires (49 wires total). It is stiffer and holds its shape better, making it well suited to fixed runs such as balustrade infill or standing rigging where minimal flex is expected. A 7×19 rope has 7 strands of 19 wires each (133 wires total), giving it significantly greater flexibility. Choose 7×19 when the cable must bend around pulleys, sheaves, or tight corners, or where repeated movement is involved.

Grade 304 (A2) stainless steel offers good resistance to moisture and mild salt exposure, making it a practical choice for inland waterways, freshwater boats, and coastal applications with regular rinsing. For prolonged immersion in seawater or highly aggressive salt environments, grade 316 (A4) stainless is generally recommended. If you are unsure which grade suits your application, contact us to confirm before ordering.

Diameter selection depends on the load the cable must carry and the fittings or hardware it will pass through. As a general guide: 0.3 mm–1.0 mm diameters suit craft, jewellery, and light tensioning work; 1.2 mm–3.0 mm covers trellis, greenhouse, and light balustrade applications; 4.0 mm–8.0 mm is typical for cable railing and moderate rigging; 10 mm–20 mm is used for heavier structural, lifting, and marine standing rigging. Always verify the minimum breaking load against your calculated working load with an appropriate safety factor.

Stainless steel wire rope can be cut with bolt cutters, angle grinder cutting discs, or purpose-made cable cutters. To prevent the cut end from fraying, apply a small amount of heat-shrink tubing, a ferrule, or a swage end stop immediately after cutting. Avoid using standard wire cutters on larger diameters as they tend to crush and distort the strands rather than making a clean cut.

Standard swage fittings, Swageless (mechanical) terminals, wire rope clips (bulldog grips), ferrules, and thimbles sized to match the cable diameter are all compatible. Ensure any fitting is rated for the strand construction you select — some swage fittings are optimised for 7×7 and may not grip 7×19 as effectively. Always follow the fitting manufacturer's installation torque or swage specifications.

Coil the rope loosely in the direction of its natural lay and store it in a dry, well-ventilated area away from direct contact with dissimilar metals (which can cause galvanic corrosion). Avoid tight bends or kinks during storage, as these can permanently deform the strands and reduce the rope's rated strength. For long-term storage, a light application of a compatible wire rope lubricant or corrosion inhibitor spray helps maintain the surface condition.

Measure the total run of your project, then add at least 10–15% for termination tails, tensioner adjustment, and any routing curves. For example, a 10 m balustrade run typically requires 11–12 m of cable per horizontal line once end fittings are accounted for. If you are prototyping or testing a fitting method, ordering a 1 m or 2 m sample of the relevant diameter first is a cost-effective way to confirm compatibility before committing to a longer length.