40 AWG Gauge Stainless Steel 316L Wire 25′ Length 0.0031″ Diameter Stainless Steel Wire, Alloy 316L, 40 AWG, 25' Length. Stainless steel 316L wire is a single strand wire with no coating. Grade: SAE 316L. Our wire re-spooling capabilities range from 8 to 45 AWG. HOOK UP WIRE. byJuly 4, 2026