Stainless steel springs are used a lot with lacing anchors or hooks together in the installation or fabrication of removable insulation covers or jackets.
Popular material is 304 & 316stainless steel.
Popular size:
Wire diameter: 1.0mm, 1.2mm;
Diameter: 10mm, 12mm;
length: 65mm, 85mm, 115mm
Other spec is available upon request.