This part requires both heat treating and Doerken dip spin finishing, a microlayer corrosion protection system designed to protect parts from enormous stresses. Manufactured from 10B21 steel, this two-piece part has an overall length of 2.705″, stud O.D. of .350″, nut O.D. of .819″, and butt hex width of .506″. On a rapid 5-day turnaround, we heat-treated to a Rc 22-32 hardness, then applied the high-performance Doerken dip spin coating, ideal for high strength fasteners since it eliminates the need for acid cleaning prior to finishing. To ensure the requirements of WSS-M21P42-A3 are met, samples underwent 840 hours of salt-spray testing conducted in an onsite ISO/IEC 17025 accredited laboratory.
Having advanced technology equipment and a highly trained staff that knows how to use it gives Elm Plating the competitive advantage to rapidly and cost-effectively process 430,000 units of this part annually, saving our customer both time and money. Our Doerken dip spin finishing capabilities have been so successful that we opened an exclusive facility to handle our Dörken Delta-MKS® applications, guaranteeing superior quality work with rapid turnarounds that meet the demands of any application.