We supply a large variety of milspec hardware to our aerospace and defense customer base and this is one of the specialty aerospace rivets we supply on an annual blanket purchase order basis.  It is a domestically made MS20426AD3-4 solid rivet made using aluminum material finished with chemical film per MIL-DTL-5541F Type 1 Class 1A.  The parts are manufactured domestically in the United States and the secondary services are also completed in California.  All paperwork, including DFAR certs, certificate of conformance, and anodizing certificates are available to the customers upon request.  Lead times are typically between 8-10 weeks for the initial release due to the additional anodizing process time required.