Material Free cutting brass is 319 type (i) or Free cutting brass as per bs 249 type (i) or High grade free cutting brass Any special brass material composition as per customers requirement Finish And Coating Natural, Nickel Plated, Tin Plated or any coating as per customer specification. Any kind of nuts can be developed and supplied exactly as per customer specifications, design and requirement. Threads ISO Metric (MM Threads) BA Threads BSW Threads (inches) UNC & UNF Threads Any threads as per custom design..