These custom Geomet coated washers are produced and finished domestically using 3 runs of Geomet 500 coating. The washer itself is made using HV-140 steel material and is dimensionally almost identical to a standard DIN125A flat washer, with the thinner height being its only variation. The ID is 5.3-5.48MM, the OD is 9.64-10MM, and the thickness is 0.8-.85MM. A large variety of different Geomet coatings are available, not to mention the Xylan, Magni, and other trademarked finish processes at your disposal. Lead time to get the plain flat washers produced is typically 8-12 weeks, and another 3-4 weeks for the Geomet 500 coating process.