Thank you for selecting Aerospace Aviation 360 for 57R-40 by Starconn Connectors under Rectangular Connectors. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like 57R-40. To help us better understand your parts requirements, please fill out an RFQ form for part number 57R-40 with your details, and our customer executive will respond to your RFQ in 15 minutes or less.