316 Stainless Steel.

(Alloy 400, 625, Duplex 2205, 2207 & other materials on request)
Silver plated nuts.
Metric sizes available from 2mm to 38mm (stocked from 4mm to 25mm)
Fractional sizes available from 1/16″ to 1-1/2″ ( stocked from 1/8″ to 1″)